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sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 1 - product list ......................................................................................................................................................................... 3 description .......................................................................................................................................................................... 3 ordering information ........................................................................................................................................................... 3 features .............................................................................................................................................................................. 3 pin configuration ................................................................................................................................................................ 4 block diagram ..................................................................................................................................................................... 5 special function register (sfr) ........................................................................................................................................ 7 function description ......................................................................................................................................................... 14 1. general features ................................................................................................................................................. 14 1.1 embedded flash ......................................................................................................................................... 14 1.2 io pads ....................................................................................................................................................... 14 1.3 instruction timing selection ......................................................................................................................... 14 1.4 clock out selection ..................................................................................................................................... 15 1.5 reset ........................................................................................................................................................ 15 1.5.1 hardware reset function ................................................................................................................. 15 1.5.2 software reset function ................................................................................................................... 15 1.5.3 reset status ........................................................................................................................................ 16 1.5.4 tim e access key register (takey) .................................................................................................... 16 1.5.5 software reset register (swres) ..................................................................................................... 17 1.5.6 example of software reset .................................................................................................................. 17 1.6 clocks ......................................................................................................................................................... 17 2. instruction set ...................................................................................................................................................... 18 3. memory structure ................................................................................................................................................ 22 3.1 program memory ........................................................................................................................................ 22 3.2 data memory ............................................................................................................................................... 23 3.3 data memory - lower 128 byte (00h to 7fh) ............................................................................................... 23 3.4 data memory - higher 128 byte (80h to ffh) .............................................................................................. 23 3.5 data memory - expanded 1k bytes ( 0000h ~ 03ffh) ............................................................................... 23 4. cpu engine ......................................................................................................................................................... 24 4.1 accumulator ................................................................................................................................................ 24 4.2 b register ................................................................................................................................................... 24 4.3 program status word .................................................................................................................................. 25 4.4 stack pointer ............................................................................................................................................... 25 4.5 data pointer ................................................................................................................................................ 25 4.6 data pointer 1 ............................................................................................................................................. 26 4.7 clock control register .................................................................................................................................. 26 4.8 interface control register ............................................................................................................................. 27 4.9 pagesel (page select) ............................................................................................................................. 27 5. gpio .................................................................................................................................................................... 29 6. multiplication division u nit .................................................................................................................................... 31 6.1 operating registers of the mdu .................................................................................................................. 31 6.2 operation of the mdu ................................................................................................................................. 32 6.2.1 first phase: loading the mdx registers. ............................................................................................ 32 6.2.2 second phase: executing calculation. ............................................................................................... 32 6.2.3 third phase: readi ng the result from the mdx registers. .................................................................. 33 6.3 normalizing ................................................................................................................................................. 33 6.4 shifting ........................................................................................................................................................ 33 7. timer 0 and timer 1 ............................................................................................................................................. 34 7.1 timer/counter mode control register (tmod) ............................................................................................. 34 7.2 timer/counter control register (tcon ) ....................................................................................................... 35 7.3 peripheral frequency control register ......................................................................................................... 36 7.4 mode 0 (13 - bit counter/timer) .................................................................................................................... 36 7.5 mode 1 (16 - bit counter/timer) .................................................................................................................... 37 7.6 mode 2 (8 - bit auto - reload counter/timer) .................................................................................................. 37 7.7 mode 3 (timer 0 acts as two independent 8 bit timers / counters) ........................................................... 38 8. timer 2 and capture compare unit ..................................................................................................................... 3 9
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 2 - 8.1 timer 2 function ........................................................................................................................................... 43 8.1.1 timer mode ........................................................................................................................................ 43 8.1.2 event counter mode ........................................................................................................................... 44 8.1.3 gated timer mode ............................................................................................................................... 44 8.1.4 reload of timer 2 ............................................................................................................................... 44 8.2 compare function ........................................................................................................................................ 45 8.2.1 compare mo de 0 ................................................................................................................................ 45 8.2.2 compare mode 1 ................................................................................................................................ 46 8.3 capture function .......................................................................................................................................... 46 8.3.1 ca pture mode 0 (by hardware) .......................................................................................................... 47 8.3.2 capture mode 1(by software) ............................................................................................................ 47 9. serial interface ..................................................................................................................................................... 48 9.1 serial interface ............................................................................................................................................ 49 9.1.1 mode 0 ................................................................................................................................................ 49 9.1.2 mode 1 ................................................................................................................................................ 50 9.1.3 mode 2 ................................................................................................................................................ 50 9.1.4 mode 3 ................................................................................................................................................ 50 9.2 multiprocessor communication of serial interface ..................................................................................... 51 9.3 peripheral frequency control register ......................................................................................................... 51 9.4 baud rate generator .................................................................................................................................... 52 9.4.1 serial i nterface modes 1 and 3 ........................................................................................................... 52 10. watchdog timer .................................................................................................................................................... 53 11. interrupt ................................................................................................................................................................ 57 11.1 priority level structure .................................................................................................................................. 60 12. power management unit ..................................................................................................................................... 62 12.1 idle mode .................................................................................................................................................... 62 12.2 stop mode ................................................................................................................................................... 62 13. pulse width modulation (pwm) ........................................................................................................................... 63 13.1 dead time ................................................................................................................................................... 70 13.2 fltconfig (fault configure) .................................................................................................................... 75 13.2.1 pwm fault inputs ........................................................................................................................... 75 13.2.2 each of the fault inputs have two modes of operation ................................................................... 75 14. iic function ........................................................................................................................................................... 77 15. spi function - serial peripheral interface ........................................................................................................... 82 16. lvi & lvr ? low voltage interrupt and low voltage reset ................................................................................ 87 17. 10- bit analog - to - digital converter (adc) ............................................................................................................ 89 18. in - system programming (internal isp) ................................................................................................................ 93 18.1 isp service program .................................................................................................................................... 93 18.2 lock bit (n) ................................................................................................................................................. 93 18.3 program the isp service program .............................................................................................................. 94 18.4 initiate isp service program ....................................................................................................................... 94 18.5 isp r egister ? takey, ifcon, ispfah, ispfal, ispfd and ispfc ........................................................ 95 19. comparator .......................................................................................................................................................... 98 operating conditions ...................................................................................................................................................... 102 dc characteristics .......................................................................................................................................................... 102 comparator characteristics ............................................................................................................................................ 104 lvi& lvr characteristics ................................................................................................................................................ 104
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 3 - product list SM39A16M1u32 , description the sm39 a16m1 is a 1t (one machine cycle per clock) single - chip 8 - bit microcontroller. it has 16 k - byte embedded flash for program, and executes all asm51 instructio ns fully compatible w ith mcs - 51 sm39 a16m1 contains 1k+256 b on - chip ram, up to 30 gpios ( 32l package) , various serial interfaces and many peripheral functions as described below. it can be programmed via writers. its on - chip ice is convenient for users in verification during d evelopment stage. the high performance of sm39 a16m1 can achieve complicated manipulation within short time. about one third of the instructions are pure 1t, and the average speed is 8 times of traditional 8051, the fastest one among all the 1t 51 - series .its excellent emi and esd characteristics are advantageous for many different applications. ordering information sm39 a16m1 ihhkl yww i: process identifier { u = 1.8v ~ 5.5v} hh: pin count k: package type postfix {as table below } l:pb free identifier {no text is non - pb free ?p? is pb free} y : year ww : week postfix package v lqfp features ? main flash rom 16kb , 128b/page ? working voltage 1.8v~5.5v ? high speed architecture of 1 clock/machine cycle runs up to 25mhz. ? 256 bytes s ram as standard 8052, plus 1 k bytes on- chip expandable s ram . ? dual 16 - bit data pointers (dptr0 & dptr1) . ? one serial peripheral inter faces in full duplex mode (uart ) . - sy nchronous mode, fixed baud rate . synchronous mode, fixed baud rate. - 8 - bit uart mode, variable baud rate. - 9 - bit uart mode, fixed baud rate. - 9 - bit uart mode, variable baud rate. ? additional baud rate generator for serial port . ? three 16 - bit timer/counters. (timer 0, 1, 2) . ? programmable watchdog timer. ? one iic interface. (master/slave mode) . ? one spi interface. (master/s lave mode) ? 8 - channel 14 - bit pwm for motor control ? 3 on - chip comparator . ? 4 - channel 16 - bit compare / capture / load functions . - c omparator out can be ccu input source internally. - n oise filter with ccu input with sample frequency select. ? auto - triggered by spec ific pwm interrupts . ? xtal, internal rc oscillator 22.1184mhz ? isp/iap /icp functions. ? eeprom function. ? on - chip in - circuit emulator (ice) functions with on - chip debugger (ocd). ? fast multiplication - division unit (mdu): 16*16, 32/16, 16/16, 32 - bit l/r shifting and 32 - bit normalization. ? lv i /lvr (lvr deglitch 500ns) ? enhance user code protection. ? power management unit for idle and power down modes.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 4 - pin configurati on 32 pin lqfp cc0/txd/adc1/p1.1 cc1/t2/adc2/p1.2 cc2/t2ex/adc3/p1.3 cc3/ss/adc4/p1.4 fltb/ mosi/adc5/p1.5 int0/miso/adc6/p1.6 t0/spi_clk/adc7/p1.7 rxd/p3.0 txd/p3.1 oci_sda/iic_sda/trigadc/p3.2 oci_scl/iic_scl/p3.3 p2.0/cmp0nin/cc0 p3.4/reset p3.5/xtal2/clkout p0.4/pwm4 p2.1/cmp0pin/cc1 p2.2/cmp1nin/cc2 p2.3/cmp1pin/cc3 p0.3/pwm3 p3.6/xtal1 vss p0.5/pwm5 p0.6/int1/pwm6 p0.7/pwm7/t1 p2.6/flta rxd/adc0/p1.0 vdd pwm0/p0.0 pwm1/p0.1 pwm2/p0.2 1 2 3 4 5 6 7 8 10 11 12 9 16 15 14 13 24 23 22 21 20 19 18 17 31 32 26 27 28 29 30 25 SM39A16M1u32vp ihhqp yww (32 lqfp top view) p2.4/cmp2nin p2.5/cmp2pin notes (1) the pin reset/p3.4 factory default is gpio ( p3.4), user must keep this pin at low during power - up. user can configure it to reset by a flash programmer. (2) to avoid accidentally entering isp - mode(refer to section 18.4), care must be taken not asserting pulse signal at rxd p1. 0 during power - up while p 1. 2,p1.3 or p1.4 are set to high. (3) to apply icp function, o c i_sda/p 3.2 and oci_scl/p 3.3 must be set to bi - direction mode if they are configured as gpio in system.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 5 - block diagram uart cmp 0 cmp 1 cmp 2 flash 16 kbytes sram 1 kbytes sram 256 bytes mdu interrupt timer 0 / 1 timer 2 & ccu watchdog ice icp port 0 port 1 port 2 port 3 port 0 port 1 port 2 port 3 t0 t1 cc 0~ cc 3 t2 t2ex iic _ scl adc 0 pwm [7:0] rxd txd cmp 1 pin / cmp 1 nin cmp 2 pin / cmp 2 nin interface control xtal 1 xtal 2 adc 1 adc 2 adc 3 iic _ sda spi spi _ miso spi _ mosi spi _ clk spi _ss adc 4 adc 5 adc 6 adc 7 cpu pwm adc iic oci _ scl oci _ sda max 810 reset cmp 0 pin / cmp 0 nin
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 6 - pin description 32 l lqfp symbol i/o descript ion 1 p1.4/adc4/ss/cc 3 i/o bit 4 of port 1 & adc input channel 4 & spi interface slave select pin & timer 2 compare/capture channel 3 2 p1.5/adc5/mosi /f ltb i/o bit 5 of port 1 & adc input channel 5 & spi interface serial data master output or slave input pin & fault_b 3 p1.6/adc6/miso/ i nt0 i/o bit 6 of port 1 & adc input channel 6 & spi interface serial data master input or slave output pin & external interrupt 0 4 p1.7/adc7/spi_cl k/ t0 i/o bit 7 of port 1 & adc input channel 7 & spi interface clock pin & timer 0 external input 5 p3.0/rxd i/o bit 0 of por t 3 & serial interface channel r eceive data 6 p3.1/txd i/o bit 1 of port 3 & serial interface channel transmit data or receive clock in mode 0 7 p3.2/ trigadc/iic_ sda/oci_sda i/o bit 2 of port 3 & exter nal pin to trigger adc & iic sda pin & on - chip instrumentation sda 8 p3.3/ iic_scl/oci_ scl i/o bit 3 of port 3 & iic scl pin & on - chip instrumentation scl 9 p3.4/ reset i/o bit 4 of port 3 & reset pin 10 p3.5/ xtal2/clko ut i/o bit 5 of port 3 & crystal out put & clock out 11 p3.6/ xtal1 i/o bit 6 of port 3 & crystal input 12 vss ground 13 p2.0 / cmp0nin/cc0 i/o bit 0 of port 2 & cmp0 negative input & timer 2 compare/ capture channel 0 14 p2.1 / cmp0pin/cc1 i/o bit 1 of port 2 & cmp0 positive input & timer 2 compare/capture channel 1 15 p2.2/ cmp1nin/cc2 i/o bit 2 of port 2 & cmp1 negative input & timer 2 compare/ capture channel 2 16 p2.3/ cmp1pin/cc3 i/o bit 3 of port 2 & cmp1 positive input & timer 2 compare/capture channel 3 17 p2.4/ cmp2nin i/o bit 4 of port 2 & cmp2 negative input 18 p2.5/ cmp2pin i/o bit 5 of port 2 & cmp2 positive input 19 p2.6/ flta i/o bit 6 of port 2 & fault_a 20 p0.7/ pwm7/t1 i/o bit 7 of port 0 & pwm channel 7 & timer 1 external input 22 p0.5/ pwm5 i/o bit 5 of port 0 & pwm chann el 5 23 p0.4/ pwm4 i/o bit 4 of port 0 & pwm channel 4 24 p0.3/ pwm3 i/o bit 3 of port 0 & pwm channel 3 25 p0.2/ pwm2 i/o bit 2 of port 0 & pwm channel 2 26 p0.1/ pwm1 i/o bit 1 of port 0 & pwm channel 1 27 p0.0 /pwm0 i/o bit 0 of port 0 & pwm channel 0 28 vdd i power supply 29 p1.0/adc0/ rxd i/o bit 0 of port 1 & adc input channel 0 & serial interface channel receive data 30 p1.1/adc1/t xd /cc 0 i/o bit 1 of port 1 & adc input channel 1 & serial interface channel transmit data & timer 2 compare/capture channel 0 31 p1.2/adc2/ t2/cc1 i/o bit 2 of port 1 & adc input channel 2 & timer 2 external input clock & timer 2 compare/capture channel 1 32 p1.3/adc3/t 2ex /c c 2 i/o bit 3 of port 1 & adc input channel 3 & timer 2 capture trigger & timer 2 compare/captur e channel 2
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 7 - special function register (sfr) a map of the special function registers is shown as below: in - direct access mode hex \ bin x000 x001 x010 x011 x100 x101 x110 x111 bin/hex f8 iics iicctl iica1 iica2 iicrwd iic ebt cmp0con cmp1con ff f0 b sp ic1 spic2 spitxd spirxd spis oppin takey f7 e8 md0 md 1 md 2 md 3 md 4 md 5 arcon ef e0 acc ispfah ispfal ispfd ispfc lvc swres e7 d8 pfcon p3m0 p3m1 df d0 psw ccen2 p0m0 p0m1 p1m0 p1m1 p2m0 p2m1 d7 c8 t2con cccon crcl crch tl2 th2 oppin2 cmp2c on cf c0 ircon ccen ccl1 cch1 ccl2 cch2 ccl3 cch3 c7 b8 ien1 ip1 s relh pagesel bf b0 p3 wdtc wdtk b7 a8 ien0 ip0 s rell adcc1 adcc2 adcdh adcdl adccs af a0 p2 rsts pwm addr pwm data a7 98 s con s buf ien2 9f 90 p1 aux aux2 ircon2 97 88 tcon tmod tl0 tl1 th0 th1 ckcon ifcon 8f 80 p0 sp dpl dph dpl1 dph1 rcon pcon 87 hex \ bin x000 x001 x010 x011 x100 x101 x110 x111 bin/hex
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 8 - page mode: page0 hex \ bin x000 x001 x010 x011 x100 x101 x110 x111 bin/hex f8 iics iicctl iica1 iica2 iicrwd iic ebt cmp0con cmp1con ff f0 b spic1 spic2 spitxd spirxd spis oppin takey f7 e8 md0 md1 md2 md3 md4 md5 arcon ef e0 acc ispfah ispfal ispfd ispfc lvc swres e7 d8 pfcon p3m0 p3m1 df d0 psw ccen2 p0m0 p0m1 p1m0 p1m1 p2m0 p2m1 d7 c8 t2con cccon crcl crch tl2 th2 oppin2 cmp2con cf c0 ircon ccen ccl1 cch1 ccl2 cch2 ccl3 cch3 c7 b8 ien1 ip1 s relh pagesel bf b0 p3 wdtc wdtk b7 a8 ien0 ip0 s rell adcc1 adcc2 adcdh adcdl adccs af a0 p2 rsts a7 98 s con s buf ien2 9f 90 p1 aux aux2 ircon2 97 88 tcon tmod tl0 tl1 th0 th1 ckcon ifcon 8f 80 p0 sp dpl dph dpl1 dph1 rcon pcon 87 hex \ bin x000 x001 x010 x011 x100 x101 x110 x111 bin/hex
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 9 - page mode: page1 hex \ bin x000 x001 x010 x011 x100 x101 x110 x111 bin/hex f8 pwm tb c0 pwmtb c1 pwmop mod tbcoun terl tbcoun terh ff f0 b period l period h sevtcm pl sevtcm ph pwmen takey f7 e8 deadti me0 deadti me1 deadti me2 deadti me3 pwmse v pwmtb post scale ef e0 acc ispfah ispfal ispfd ispfc lvc swres e7 d8 pfcon fltcon fig fltnf pwmpo larity ovridedi s ovrideda ta df d0 psw duty0l duty0h duty1l duty1h duty2l duty2h duty3l d7 c8 t2con duty3h tl2 th2 cf c0 ircon c7 b8 ien1 ip1 srelh pwmint f pagesel bf b0 p3 wdtc wdtk b7 a8 ien0 i p0 srell adcc1 adcc2 adcdh adcdl adccs af a0 p2 a7 98 scon sbuf ien2 9f 90 p1 aux aux2 ircon2 97 88 tcon tmod tl0 tl1 th0 th1 ckcon ifcon 8f 80 p0 sp dpl dph dpl1 dph1 rcon pcon 87 hex \ bin x000 x001 x010 x011 x100 x101 x110 x11 1 bin/hex
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 10 - note: special function registers reset values and description for sm39 a16m1 . register location: 80h ~ 8fh reset value description method 1 method 2 page 0 method 2 page 1 system sp 81h 81h 81h 07h stack pointer acc e0h e0h e0h 00h acc umulator psw d0h d0h d0h 00h program status word b f0h f0h f0h 00h b register dpl 82h 82h 82h 00h data pointer 0 low byte dph 83h 83h 83h 00h data pointer 0 high byte dpl1 84h 84h 84h 00h data pointer 1 low byte dph1 85h 85h 85h 00h data pointer 1 hi gh byte aux 91h 91h 91h 00h auxiliary register pcon 87h 87h 87h 4 0h power control ckcon 8eh 8eh 8eh 10h clock control register pagesel beh beh beh 00h page select interrupt & priority ircon c0h c0h c0h 00h interrupt request control register ircon2 9 7h 97h 97h 00h interrupt request control register 2 ien0 a8h a8h a8h 00h interrupt enable register 0 ien1 b8h b8h b8h 00h interrupt enable register 1 ien2 9ah 9ah 9ah 00h interrupt enable register 2 ip0 a9h a9h a9h 00h interrupt priority register 0 ip 1 b9h b9h b9h 00h interrupt priority register 1 uart pcon 87h 87h 87h 4 0h power control aux 91h 91h 91h 00h auxiliary register scon 98h 98h 98h 00h serial port, control register sbuf 99h 99h 99h 00h serial port, data buffer srell aah aah aah 00h seri al port, reload register, low byte srelh bah bah bah 00h serial port, reload register, high byte pfcon d9h d9h d9h 00h peripheral frequency control register adc adcc1 abh abh abh 00h adc control 1 register adcc2 ach ach ach 0 8 h adc control 2 register adcdh adh adh adh 00h adc data high byte adcdl aeh aeh aeh 00h adc data low byte adccs afh afh afh 00h adc clock select wdt rsts a1h a1h 00h reset status register wdtc b6h b6h b6h 04h watchdog timer control register
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 11 - register location: 80h ~ 8fh reset value description method 1 method 2 page 0 method 2 page 1 wdtk b7h b7h b7h 00h watchdog ti mer refresh key. takey f7h 00h time access key register pwm adcc2 ach ach ach 08h adc control 2 reg. p wm tbc0 f9 h 00h pwm time base control 0 reg. pwm tbc1 fa h 10h pwm time base control 1 reg. pwm opmod fb h 00h pwm output pair mode reg. tbcount erl fc h 00h time base counter (low) tbcounterh fd h 00h time base counter (high) periodl f1 h ff h pwm period (low) reg. periodh f2 h 3f h pwm period(high) reg. sevtcmpl f3 h ff h special event compare low reg. sevtcmph f4 h 3f h special event comp are high reg. pwm en f5 h 00h pwm output enable reg. pwm sev ed h 00h pwm special event reg. pwmtbpost scale ee h 00h pwm time base post scale reg. pwmintf bch 00h pwm int flag reg. deadtime0 e9 h 00h dead time 0 reg. deadtime1 ea h 00h dead tim e 1 reg. deadtime2 eb h 00h dead time 2 reg. deadti me3 ec h 00h dead time 3 reg. fltconfig db h 80h fault config reg. fltnf dch 00h fault noise filter reg. pwmpolarity ddh ff h pwm polarity reg. ovrid edis de h ff h override disable reg. ovride data df h 00h override data reg. d uty0l d1 h 00h pwm 0 d uty low byte reg. duty0h d2 h 00h pwm 0 data high byte reg. d uty1l d3 h 00h pwm 1 d uty low byte reg. duty1h d4 h 00h pwm 1 data high byte reg. d uty2l d5h 00h pwm 2 d uty low byte reg. duty 2h d6 h 00h pwm 2 d uty h igh byte reg. d uty3l d7 h 00h pwm 3 d uty low byte reg. duty3h c9 h 00h pwm 3 d uty h igh byte reg. pwm addr a2 h 00h pwm address register pwm data a3 h 00h pwm data register timer0/timer1 tcon 88h 88h 88h 00h timer/counter co ntrol
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 12 - register location: 80h ~ 8fh reset value description method 1 method 2 page 0 method 2 page 1 tmod 89h 89h 89h 00h timer mode control tl0 8ah 8ah 8ah 00h timer 0, low byte tl1 8bh 8bh 8bh 00h timer 1, low byte th0 8ch 8ch 8ch 00h timer 0, high byte th1 8dh 8dh 8dh 00h timer 1, high byte pfcon d9h d9h d9h 00h peripheral frequency control register pca(timer2) aux2 92h 92h 92h 00h auxiliary 2 register ccen c1h c1h 00h compare/capture enable register ccl1 c2h c2h 00h compare/capture register 1, low byte cch1 c3h c3h 00h compare/capture register 1, high byte ccl2 c4h c4h 00h compare /capture register 2, low byte cch2 c5h c5h 00h compare/capture register 2, high byte ccl3 c6h c6h 00h compare/capture register 3, low byte cch3 c7h c7h 00h compare/capture register 3, high byte t2con c8h c8h c8h 00h timer 2 control cccon c9h c9h 0 0h compare/capture control crcl cah cah 00h compare/reload/capture register, low byte crch cbh cbh 00h co mpare/reload/capture register, high byte tl2 cch cch cch 00h timer 2, low byte th2 cdh cdh cdh 00h timer 2, high byte ccen2 d1h d1h 00h compare /capture enable 2 register gpio p0 80h 80h 80h u ser define port 0 p1 90h 90h 90h ffh port 1 p 2 a0h a0h a0h 7 fh port 2 p3 b0h b0h b0h 7 fh port 3 p0m0 d2h d2h user define port 0 output mode 0 p0m1 d3h d3h 00h port 0 output mode 1 p1m0 d4h d4h 00h port 1 output mode 0 p1m1 d5h d5h 00h port 1 output mode 1 p2m0 d6h d6 h 00h port 2 output mode 0 p2m1 d7h d7 h 00h port 2 output mode 1 p3m0 dah dah 00h port 3 output mode 0 p3m1 dbh dbh 00h port 3 output mode 1 isp/iap/eeprom
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 13 - register location: 80h ~ 8fh reset value description method 1 method 2 page 0 method 2 page 1 ifcon 8fh 8fh 8fh 00h interface control register ispfah e1h e1h e1h ffh isp flash address - high register ispfal e2h e2h e2h ffh isp flash address - low register ispfd e3h e3h e3h ffh isp flash data register ispfc e4h e4h e4h 00h isp flash control register takey f7h f7h f7 h 00h time access key register lvi/lvr/softreset rsts a1h a1h 00h reset status register lvc e6h e6h e6h 20h low voltage control register swres e7h e7h e7h 00h software reset register takey f7h f7h f7h 00h time access key register spi spic1 f1h f1h 08h spi control register 1 spic2 f2h f2h 00h spi control register 2 spitxd f3h f3h 00h spi transmit data buffer spirxd f4h f4h 00h spi receive data buffer spis f5h f5h 40h spi status register iic iics f8h f8h 00h iic status register iicctl f9h f9h 04h iic control register iica1 fah fah a0h iic channel 1 address 1 register iica2 fbh fbh 60h iic channel 1 address 2 register iicrwd fch fch 00h iic channel 1 read / write data buffer iicebt fdh fdh 00h iic enable bus transaction register o pa oppin f6h f6h 00h comparator pin select register oppin2 ceh ceh 00h comparator pin select 2 register cmp0con feh feh 00h comparator 0 control register cmp1con ffh ffh 00h comparator 1 control register cmp 2 con cfh cfh 00h comparator 2 control re gister
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 14 - function description 1. general features sm39 a16m1 is an 8 - bit micro - controller. all of its functions and the detailed meanings of sfr will be given in the following sections. 1.1 embedded flash the program can be loaded into the embedded 16 kb flash m emory via its writer or in - system programming (isp). the high - quality flash suitable for re - programming and data recording as eeprom. 1.2 io pads the sm39 a16m1 has four i/o ports: port 0, port 1, port 2 and port 3. ports 0, 1 are 8 - bit ports and port 2, 3 are 7 - bit port s . these are: quasi - bidirectional (standard 8051 port outputs), push - pull, open drain, and input - only. as description in section 5. all the pads for p0 , p1 , p2 and p3 are with slew rate to reduce emi. the io pads can withstand 4kv esd in human body mode guaranteeing the sm39 a16m1?s quality in high electro - static environments. the reset pin can define as general i/o p 3 . 4 when user use internal reset. the xtal2 and xtal1 can define as p3. 5 and p3. 6 by writer or isp , when user use internal osc as system clock . w hen user use external osc as system clock and input into xtal1 , only xtal2 can be defined as p3. 5 . 1.3 instruction timing selection the conventional 52 - series mcus are 12t, i.e., 12 oscillator clocks per machine cycle. sm39 a16m1 is a 1t to 8t mcu, i.e., its machine cycle is one - clock to eight - clock. in the other words, it can execute one instruction within one clock to only eight clocks. mnemonic: ckcon address: 8eh 7 6 5 4 3 2 1 0 reset - its[2:0] - - clkout[1:0] 10h its: instruction timing select. its [2:0] instruction timing 000 1t mode 001 2t mode (default) 010 3t mode 011 4t mode 100 5t mode 101 6t mode 110 7t mode 111 8t mode the default is in 2t mode, and it can be changed to another instruction timing mode if ckcon [6:4] (at address 8eh) is change any time. not every instruction can be executed with one machine cycle. the exact machine cycle number for all the instructions are given in the next section.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 15 - 1.4 clock out selection the sm39 a16m1 can generator a clock out sig nal at p3. 5 , when user use oscillator (xtal1 as clock input) or internal osc as system clock. the ckcon [1:0] (at address 8eh) can change any time. clkout: clock output select. ckcon [1:0] mode. 00 gpio(default) 01 fosc 10 fosc/2 11 fosc/4 it can be used when the system clock is the internal rc oscillator. 1.5 reset 1.5.1 hardware reset function sm39 a16m1 provides internal reset circuit inside the internal reset time can set by writer or isp. internal reset time 25ms (default) 200ms 100ms 50ms 16ms 8ms 4ms 1.5.2 software reset function sm39 a16m1 provides one software reset mechanism to reset whole ch ip. to perform a software reset, the firmware must write three specific values 55h, aah and 5ah sequentially to the takey register to enable the software reset register (swres) write attribute. after swres register obtain the write authority, the firmware can write ffh to the swres register. the hardware will decode a reset signal that ?or? with the other hardware reset. the swres register is self - reset at the end of the software reset procedure. mnemonic description dir. bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 rst software reset function rsts reset status register a1h - lvrlp intf lvrlp f pdrf wdtf swrf lvrf porf 00h takey time access key register f7h takey [7:0] 00h swres software reset register e7h swres [7:0] 00h
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 16 - 1.5.3 reset status mnemonic: rsts address: a1h 7 6 5 4 3 2 1 0 reset - lvrlp intf lvrlpf pdrf wdtf swrf lvrf porf 00h lvr lpint f : ? internal ? low voltage reset flag. when mcu is reset by lvr_lp_int , lvrlpintf flag will be set to one by hardware. this flag clear by software . lvrlpf : low voltage reset (low power) flag. when mcu is reset by lvr(low power) , lvrlpf flag will be set to one by hardware. this flag clear by software . pdrf: pad reset flag. when m cu is reset by reset pad , pdr f flag will be set to one by hardware. this flag cl ear by software. wdtf: watchdog timer reset flag. w h en mcu is reset by watchdog, wdtf flag will be set to one by hardware. this flag clear by software. swrf: software reset flag. when mcu is reset by software , swrf flag will be set to one by hardware. th is flag clear by software . lvrf: low voltage reset flag. when mcu is reset by lvr , lvrf flag will be set to one by hardware. this flag clear by software . porf: power on reset flag. when mcu is reset by por , porf flag will be set to one by hardware. this flag clear by software . 1.5.4 time access key register (takey) mnemonic: takey address:f7h 7 6 5 4 3 2 1 0 reset takey [7:0] 00h software reset register (swres) is read - only by default, software must write three specific values 55h, aah and 5ah sequentially to the takey register to enable the swres register write attribute. that is: mov takey, #55h mov takey, #0aah mov takey, #5ah
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 17 - 1.5.5 software reset register (swres) swres [7:0]: software reset register bit. these 8 - bit is self - reset at the end of the reset procedure. swres [7:0] = ffh, software reset. swres [7:0] = 00h ~ feh, mcu no action. 1.5.6 example of software reset mov takey, #55h mov takey, #0aah mov takey, #5ah ; enable swres write attribute mov swres, #0ffh ; software reset mcu 1.6 clocks the default clock is the 22.1184mhz internal osc. this clock is used during the initializ ation stage. the major work of the initialization stage is to determine the clock source used in normal operation. the internal clock sources are from the internal osc with difference frequ ency division as shown in table 1 - 1 the clock source can set by writer or icp. table 1 - 1 : selection of clock source clock source external crystal (use xtal1 and xtal2 pins ) external crystal (only use xtal1, the xtal2 define as i/o) 22.118 4mhz from internal osc 11.0592 mhz from internal osc 5.5296 mhz from internal osc 2.7648 mhz from internal osc 1.3824 mhz from internal osc there may be having a little variance in the frequency from the internal osc. the max variance as giving in table 1 - 2 . table 1 - 2 : temperature with variance temperature max variance 25 2 % mnemonic: swres address: e7h 7 6 5 4 3 2 1 0 reset swres [7:0] 00h
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 18 - 2. instruction set a ll sm39 a16m1 instructions are binary code compatible and perform the same functions as they do with the industry standard 8051. the following tables give a summary of the instruction set cycles of the sm39 a16m1 microcontroller cor e. as given in table table 2 - 1 : arithmetic operations mnemonic description code bytes cycles add a,rn add register to accumulator 28- 2f 1 1 add a,direct add direct byte to accumulator 25 2 2 add a,@ri add indirect ram to accumulator 26- 27 1 2 add a,#data add immediate data to accumulator 24 2 2 addc a,rn add register to accumulator with carry flag 38- 3f 1 1 addc a,direct add direct byte to a with carry flag 35 2 2 addc a,@ri add indirect ram to a with c arry flag 36- 37 1 2 addc a,#data add immediate data to a with carry flag 34 2 2 subb a,rn subtract register from a with borrow 98- 9f 1 1 subb a,direct subtract direct byte from a with borrow 95 2 2 subb a,@ri subtract indirect ram from a with borrow 96- 97 1 2 subb a,#data subtract immediate data from a with borrow 94 2 2 inc a increment accumulator 04 1 1 inc rn increment register 08- 0f 1 2 inc direct increment direct byte 05 2 3 inc @ri increment indirect ram 06- 07 1 3 inc dptr increment data poi nter a3 1 1 dec a decrement accumulator 14 1 1 dec rn decrement register 18- 1f 1 2 dec direct decrement direct byte 15 2 3 dec @ri decrement indirect ram 16- 17 1 3 mul ab multiply a and b a4 1 5 div divide a by b 84 1 5 da a decimal adjust accumulat or d4 1 1
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 19 - table 2 - 2 : logic operations mnemonic description code bytes cycles anl a,rn and register to accumulator 58- 5f 1 1 anl a,direct and direct byte to accumulator 55 2 2 anl a,@ri and indirect ram t o accumulator 56- 57 1 2 anl a,#data and immediate data to accumulator 54 2 2 anl direct,a and accumulator to direct byte 52 2 3 anl direct,#data and immediate data to direct byte 53 3 4 orl a,rn or register to accumulator 48- 4f 1 1 orl a,direct or dir ect byte to accumulator 45 2 2 orl a,@ri or indirect ram to accumulator 46- 47 1 2 orl a,#data or immediate data to accumulator 44 2 2 orl direct,a or accumulator to direct byte 42 2 3 orl direct,#data or immediate data to direct byte 43 3 4 xrl a,rn e xclusive or register to accumulator 68- 6f 1 1 xrl a,direct exclusive or direct byte to accumulator 65 2 2 xrl a,@ri exclusive or indirect ram to accumulator 66- 67 1 2 xrl a,#data exclusive or immediate data to accumulator 64 2 2 xrl direct,a exclusive or accumulator to direct byte 62 2 3 xrl direct,#data exclusive or immediate data to direct byte 63 3 4 clr a clear accumulator e4 1 1 cpl a complement accumulator f4 1 1 rl a rotate accumulator left 23 1 1 rlc a rotate accumulator left through carry 33 1 1 rr a rotate accumulator right 03 1 1 rrc a rotate accumulator right through carry 13 1 1 swap a swap nibbles within the accumulator c4 1 1
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 20 - table 2 - 3 : data transfer mnemonic description code bytes cycles mov a,rn move register to accumulator e8 - ef 1 1 mov a,direct move direct byte to accumulator e5 2 2 mov a,@ri move indirect ram to accumulator e6 - e7 1 2 mov a,#data move immediate data to accumulator 74 2 2 mov rn,a move accumulator to register f8 - ff 1 2 mov rn,direct move direct byte to register a8 - af 2 4 mov rn,#data move immediate data to register 78- 7f 2 2 mov direct,a move accumulator to direct byte f5 2 3 mov direct,rn move register to direct byte 88- 8f 2 3 mov direct1,direct2 move di rect byte to direct byte 85 3 4 mov direct,@ri move indirect ram to direct byte 86- 87 2 4 mov direct,#data move immediate data to direct byte 75 3 3 mov @ri,a move accumulator to indirect ram f6 - f7 1 3 mov @ri,direct move direct byte to indirect ram a6 - a7 2 5 mov @ri,#data move immediate data to indirect ram 76- 77 2 3 mov dptr,#data16 load data pointer with a 16 - bit constant 90 3 3 movc a,@a+dptr move code byte relative to dptr to accumulator 93 1 3 movc a,@a+pc move code byte relative to pc to accu mulator 83 1 3 movx a,@ri move external ram (8 - bit addr.) to a e2 - e3 1 3 movx a,@dptr move external ram (16 - bit addr.) to a e0 1 3 movx @ri,a move a to external ram (8 - bit addr.) f2 - f3 1 4 movx @dptr,a move a to external ram (16 - bit addr.) f0 1 4 push direct push direct byte onto stack c0 2 4 pop direct pop direct byte from stack d0 2 3 xch a,rn exchange register with accumulator c8 - cf 1 2 xch a,direct exchange direct byte with accumulator c5 2 3 xch a,@ri exchange indirect ram with accumulator c6 - c7 1 3 xchd a,@ri exchange low - order nibble indir. ram with a d6 - d7 1 3
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 21 - table 2 - 4 : program branches mnemonic description code bytes cycles acall addr11 absolute subroutine call xxx11 2 6 lcall addr16 lon g subroutine call 12 3 6 ret from subroutine 22 1 4 reti from interrupt 32 1 4 ajmp addr11 absolute jump xxx01 2 3 ljmp addr16 long iump 02 3 4 sjmp rel short jump (relative addr.) 80 2 3 jmp @a+dptr jump indirect relative to the dptr 73 1 2 jz rel jump if accumulator is zero 60 2 3 jnz rel jump if accumulator is not zero 70 2 3 jc rel jump if carry flag is set 40 2 3 jnc jump if carry flag is not set 50 2 3 jb bit,rel jump if direct bit is set 20 3 4 jnb bit,rel jump if direct bit is not set 30 3 4 jbc bit,direct rel jump if direct bit is set and clear bit 10 3 4 cjne a,direct rel compare direct byte to a and jump if not equal b5 3 4 cjne a,#data rel compare immediate to a and jump if not equal b4 3 4 cjne rn,#data rel compare immed. to reg. and jump if not equal b8 - bf 3 4 cjne @ri,#data rel compare immed. to ind. and jump if not equal b6 - b7 3 4 djnz rn,rel decrement register and jump if not zero d8 - df 2 3 djnz direct,rel decrement direct byte and jump if not zero d5 3 4 nop no operation 00 1 1 table 2 - 5 : boolean manipulation mnemonic description code bytes cycles clr c clear carry flag c3 1 1 clr bit clear direct bit c2 2 3 setb c set carry flag d3 1 1 setb bit set direct bit d2 2 3 cpl c complement carry flag b3 1 1 cpl bit complement direct bit b2 2 3 anl c,bit and direct bit to carry flag 82 2 2 anl c,/bit and complement of direct bit to carry b0 2 2 orl c,bit or direct bit to carry flag 72 2 2 orl c,/bit or co mplement of direct bit to carry a0 2 2 mov c,bit move direct bit to carry flag a2 2 2 mov bit,c move carry flag to direct bit 92 2 3
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 22 - 3. memory structure the sm39 a16m1 memory structure follows general 8052 structure. it is integrate the expanded 1kb data memory and 16kb program memory. 3.1 program memory the sm39 a16m1 has 16 kb on - chip flash memory which can be used as general program memory or eeprom, on which include up to 1 k byte specific isp service program memory space. the address range for the 16k byte is $0000 to $ 3 fff. the address range for the isp service program is $ 3c 00 to $ 3 fff. the isp service program size can be partitioned as n blocks of 128 byte (n=0 to 8 ). when n=0 means no isp service program space available, total 16 k byte memory used as program memory. when n = 1 means address $ 3 f 8 0 to $ 3 fff reserved for isp service program. when n=2 means memory address $ 3f 00 to $ 3 fff reserved for isp service program?etc. value n can be set and programmed into sm39 a16m1 information block by writer. as shown in fig. 3 - 1 3fff 3f80 3f00 3e80 3e00 3d80 3d00 3c80 3c00 0000 isp service program space, up to 1k 16k program memory space n=8 n=7 n=6 n=5 n=4 n=3 n=2 n=1 n=0 fig. 3 - 1 : sm39 a16m1 programmable flash
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 23 - 3.2 data memory the sm39 a16m1 has 1 k + 256b on- chip sram, 256b of it are the same as general 8052 internal memory structure while the expanded 1 k bytes on - chip sram can be accessed by external memory addressing method ( by instruction movx.) . as shown in fig. 3 - 2 higher 128 bytes (accessed by indirect addressing mode only) lower 128 bytes (accessed by direct & indirect addressing mode ) sfr (accessed by direct addressing mode only) expanded 1k bytes (accessed by direct external addressing mode by instruction movx) 00 7f 80 ff 80 ff 0000 03ff fig. 3 - 2 : ram architecture 3.3 data memory - lower 128 byte (00h to 7fh) data memory 00h to ffh is the same as 8052. the address 00h to 7fh can be accessed by direct and indirect addressing modes. address 00h to 1fh is register area. addre ss 20h to 2fh is memory bit area. address 30h to 7fh is for general memory area. 3.4 data memory - higher 128 byte (80h to ffh) the address 80h to ffh can be accessed by indirect addressing mode. address 80h to ffh is data area. 3.5 data memory - expanded 1 k bytes ( 0000h ~ 03ff h) from external address 0000h to 03ffh is the on - chip expanded sram area, total 1k bytes. this area can be accessed by external direct addressing mode (by instruction movx). the address space of instruction movx @ri, i=0, 1 is determined by rcon [7:0] of special function register $86 rcon (internal ram control register). the default setting of rcon [7:0] is 00h (page0). one page of data ram is 256 bytes. when emen = 0, the internal 1k expanded ram is enabled. note: sm39 a 16 m1 can not access (off - chip) external ram. movx @ri, a movx a, @ri 0 Q rcon[7:0] Q 3 addr [15:8] <= rcon[7:0]
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 24 - 4. cpu engine the sm39 a16m1 engine is composed of four components: (1) control unit (2) arithmetic ? logic unit (3) memory control unit (4) ram and sfr control unit the sm39 a16m1 engine allows to fetch instruction from program memory and to execute using ram or sfr. the following chapter describes the main engine register. mnemonic description dir. bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 rst 8051 core acc a ccumulator e0h acc.7 acc.6 acc.5 acc.4 acc.3 acc.2 acc.1 acc.0 00h b b register f0h b.7 b.6 b.5 b.4 b.3 b.2 b.1 b.0 00h psw program status word d0h cy ac f0 rs[1:0] ov psw.1 p 00h sp stack pointer 81h sp[7:0] 07h dpl data pointer low 0 82h dpl[7:0] 00 h dph data pointer high 0 83h dph[7:0] 00h dpl1 data pointer low 1 84h dpl1[7:0] 00h dph1 data pointer high 1 85h dph1[7:0] 00h aux auxiliary register 91h b r g s p21cc - p1ur - - - dps 00h ckcon clock control register 8eh - its[2:0] clkout[1:0] 10h ifcon interface control register 8fh - cdpr - - - - - ispe 00h 4.1 accumulator acc is the accumulator register. most instructions use the accumulator to store the operand. mnemonic: acc address: e0h 7 6 5 4 3 2 1 0 reset acc.7 acc.6 acc05 acc.4 acc.3 acc .2 acc.1 acc.0 00h acc[7:0]: the a (or acc) register is the standard 8052 accumulator. 4.2 b register the b register is used during multiply and divide instructions. it can also be used as a scratch pad register to store temporary data. mnemonic: b address : f0h 7 6 5 4 3 2 1 0 reset b.7 b.6 b.5 b.4 b.3 b.2 b.1 b.0 00h b[7:0]: the b register is the standard 8052 register that serves as a second accumulator.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 25 - 4.3 program status word mnemonic: psw address: d0h 7 6 5 4 3 2 1 0 reset cy ac f0 rs [1:0] ov f1 p 00h cy: carry flag. ac: auxiliary carry flag for bcd operations. f0: general purpose flag 0 available for user. rs[1:0]: register bank select, used to select working register bank. rs[1:0] bank selected location 00 bank 0 00h ? 07h 01 bank 1 08h ? 0fh 10 bank 2 10h ? 17h 11 bank 3 18h ? 1fh ov: overflow flag. f1: general purpose flag 1 available for user. p: parity flag, affected by hardware to indicate odd/even number of ?one? bits in the accumulator, i.e. even parity. 4.4 stack pointer the st ack pointer is a 1 - byte register initialized to 07h after reset. this register is incremented before push and call instructions, causing the stack to start from location 08h. mnemonic: sp address: 81h 7 6 5 4 3 2 1 0 reset sp [7:0] 07h sp[7:0]: the s tack pointer stores the scratchpad ram address where the stack begins. in other words, it always points to the top of the stack. 4.5 data pointer the data pointer (dptr) is 2 - bytes wide. the lower part is dpl, and the highest is dph. it can be loaded as a 2 - byte register (e.g. mov dptr, #data16) or as two separate registers (e.g. mov dpl,#data8). it is generally used to access the external code or d ata space (e.g. movc a, @a+dptr or movx a, @dptr respectively). mnemonic: dpl address: 82h 7 6 5 4 3 2 1 0 res et dpl [7:0] 00h dpl[7:0]: data pointer low 0 mnemonic: dph address: 83h 7 6 5 4 3 2 1 0 reset dph [7:0] 00h dph [7:0]: data pointer high 0
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 26 - 4.6 data pointer 1 the dual data pointer accelerates the moves of data block. the standard dptr is a 16 - bit r egister that is used to address external memory or peripherals. in the sm39 a16m1 core the standard data pointer is called dptr, the second data pointer is called dptr1. the data pointer select bit chooses the active pointer. the data pointer select bit is located in lsb of aux register (dps). the user switches between pointers by toggling the lsb of aux register. all dptr - related instructions use the currently selected dptr for any activity. mnemonic: dpl1 address: 84h 7 6 5 4 3 2 1 0 reset dpl1 [7:0] 00 h dpl1[7:0]: data pointer low 1 mnemonic: dph1 address: 85h 7 6 5 4 3 2 1 0 reset dph1 [7:0] 00h dph1[7:0]: data pointer high 1 mnemonic: aux address: 91h 7 6 5 4 3 2 1 0 reset brgs p21cc - p1ur - - - dps 00h dps: data pointer select register . dps = 1 is selected dptr1. 4.7 clock control register mnemonic: ckcon address: 8eh 7 6 5 4 3 2 1 0 reset - its[2:0] - - clkout[1:0] 10h its[2:0]: instruction timing select. its [2:0] mode 000 1t mode 001 2t mode (default) 010 3t mode 011 4t mode 1 00 5t mode 101 6t mode 110 7t mode 111 8t mode clkout[1:0]: clock output select. clkout[1:0] mode 00 gpio(default) 01 fosc 10 fosc/2 11 fosc/4 it can be used when the system clock is the internal rc oscillator.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 27 - 4.8 interface control register mnemo nic: ifcon address: 8fh 7 6 5 4 3 2 1 0 reset - cdpr - - - - - ispe 00h cdpr: code protect (read only) ispe: isp function enable bit ispe = 1, enable isp function . ispe = 0, disable isp function . 4.9 pagesel (page select) the sm 39a16m1 provide two di fferent methods to set special function register (sfr) are as follow: ? sfr method 1 (indirect mode): this method is only an sfr page. if you want to use pwm registers of the method 2, can be used indirectly addressable setting. example: write a data 0x80 h to pwmen register in method 1. pagesel = 0 x0 0 ; // method 1. pwmaddr = 0 xf5 ; // pwmen indirect address: 0xf5 (indirect mode) // (refer page1 table of the method 2) pwmdata = 0 x80 ; // write data 0x80 to pwmen. ? sfr metho d 2 (page mode): this method provides two sfr page to set the registers. example: write a data 0x80 to pwmen register in method 2, page 1. pagesel = 0 x 0 3 ; // method 2, page 1 (page mode) pwmen = 0 x80; // write data 0x80 to pwmen. ? sfr page mode table: page_mode page_num sfr select 0 0 sfr method 1 0 1 sfr method 1 1 0 sfr method 2, page 0 1 1 sfr method 2, page 1 mnemonic: pagesel address: b eh 7 6 5 4 3 2 1 0 reset - - - - - - p age _ num p age _ mode 0 0h page_num : this flag is used only in the sfr method 2 0 = page 0 mode 1 = page 1 mode. page_mode : this flag is used to select sfr register table.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 28 - 0 : sfr method 1 (indirect mode) . 1 : sfr method 2 (page mode).
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 29 - 5. gpio the sm39 a16m1 has four i/o ports: port 0, port 1 , port 2, port 3. ports 0, 1, 2 are are 8 - bit ports and ports 2 , 3 are are 7 - bit ports. these are: quasi - bidirectional (standard 8 0 51 port outputs), push - pull, open drain, and input - only. two configuration registers for each port select the output type for each port pin. all i/o po rt pins on the sm39 a16m1 may be configured by software to one fo four types on a pin - by - pin basis, shown as below: mnemonic description direct bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 reset i/o port function register p0m0 port 0 output mode 0 d2 h p0m0 [7:0] ~op18 p0m1 port 0 output mode 1 d3h p0m1[7:0] 00h p1m0 port 1 output mode 0 d4h p1m0[7:0] 00h p1m1 port 1 output mode 1 d5h p1m1[7:0] 00h p2m0 port 2 output mode 0 d6h - p2m0[6:0] 00h p2m1 port 2 output mode 1 d7h - p2m1[6:0] 00h p3 m0 port 3 output mode 0 dah - p3m0[6:0] 00h p3m1 port 3 output mode 1 dbh - p3m1[6:0] 00h *op18 by writer programming set. pxm1.y pxm0.y port output mode 0 0 quasi - bidirectional (standard 8051 port outputs) (pull - up) 0 1 push - pull 1 0 input only ( high - impedance) 1 1 open drain the reset pin can define as general i/o p 3 . 4 when user use internal reset. the xtal2 and xtal1 can define as p3. 5 and p3. 6 by writer or isp when user use internal osc as system clock when user use external osc as system clock and input into xtal1 only xtal2 can be defined as p3. 5 . for general - purpose applications, every pin can be assigned to either high or low independently as shown below: mnemonic description dir. bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 rst ports port 3 port 3 b0h - p 3 .6 p 3 .5 p 3 .4 p 3 .3 p 3 .2 p 3 .1 p 3 .0 7 fh port 2 port 2 a 0h - p 2 .6 p 2 .5 p 2 .4 p 2 .3 p 2 .2 p 2 .1 p 2 .0 7 fh port 1 port 1 90h p1.7 p1.6 p1.5 p1.4 p1. 3 p1.2 p1.1 p1.0 ffh port 0 port 0 80h p0.7 p0.6 p0.5 p0.4 p0.3 p0.2 p0.1 p0.0 op19 *op19 b y writer programming set.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 30 - mnemonic: p0 address: 80h 7 6 5 4 3 2 1 0 reset p0.7 p0.6 p0.5 p0.4 p0.3 p0.2 p0.1 p0.0 op19 p0.7~ 0: port0 [7] ~ port0[0] mnemo nic: p1 address: 90h 7 6 5 4 3 2 1 0 reset p1.7 p1.6 p1.5 p1.4 p1.3 p1.2 p1.1 p1.0 ffh p1.7~ 0: port1 [7] ~ port1 [0] mnemonic: p 2 address: a 0h 7 6 5 4 3 2 1 0 reset - p 2 .6 p 2 .5 p 2 .4 p 2 .3 p 2 .2 p 2 .1 p 2 .0 7 fh p2. 6 ~ 0: port 2 [ 6 ] ~ port 2 [0] mnemonic: p 3 address: b 0h 7 6 5 4 3 2 1 0 reset - p 3 .6 p 3 .5 p 3 .4 p 3 .3 p 3 .2 p 3 .1 p 3 .0 7 fh p3. 6 ~ 0: por3 [ 6 ] ~ port3 [0]
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 31 - 6. multiplication division unit this on - chip arithmetic unit provides 32 - bit division, 16 - bit multiplication, shift and normalize fea tures. all operations are unsigned integer operation. mnemonic description direct bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 reset multiplication division unit pcon power control 87h smod mduf - - - - stop idle 40h arcon arithmetic control registe r efh mdef mdov slr sc[4:0] 00h md0 multiplication/divi sion register 0 e9h md0[7:0] 00h md1 multiplication/divi sion register 1 eah md1[7:0] 00h md2 multiplication/divi sion register 2 ebh md2[7:0] 00h md3 multiplication/divi sion register 3 ech md3[7:0] 00h md4 multiplication/divi sion register 4 edh md4[7:0] 00h md5 multiplication/divi sion register 5 eeh md5[7:0] 00h 6.1 operating registers of the mdu the mdu is handled by eight registers, which are memory mapped as special function registers. the arithmet ic unit allows operations concurrently to and independent of the cpu?s activity. operands and results registers are md0 to md5. control register is arcon. any calculation of the mdu overwrites its operands. mnemonic: arcon address: efh 7 6 5 4 3 2 1 0 re set mdef mdov slr sc[4:0] 00h mdef - multiplocation division errot flag. the mdef is an error flag. the error flag is read only. the error flag indicates an improperly performed operation (when one of the arithmetic operations has been restarted or inter rupted by a new operation). the error flag mechanism is automatically enabled with the first write to md0 and disabled with the final read instruction from md3 multiplication or shift/normalizing) or md5 (division) in phase three. the error flag is set whe n: ? phase two in process and write access to md x registers (restart or interrupt calculations) the error flag is reset only if: the second p hase two finished (arithmetic operation successful completed) and read access to mdx registers. mdov - multiplicatio n division overflow flag. the overflow flag is read only. the overflow flag is set when: 1. division by zero 2. multiplication with a result greater then 0000ffffh
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 32 - 3. start of normalizing if the most significant bit of md3 is set(md3.7 = 1) the overflow flag is res et when: write access to md0 register (start phase one) slr - shift direction bit. slr = 0 ? shift left operation. slr = 1 ? shift right operation. sc[4:0] - shift counter. when preset with 00000b, normalizing is selected. after normalize sc.0 ? sc.4 conta ins the nu mber of normalizing shifts performed. when sc.4 ? sc.0 0, shift - operation is started. the number of shifts performed is determined by the count written to sc.4 to sc.0. sc.4 ? msb ... sc.0 ? lsb 6.2 operation of the mdu operations of the mdu consist of thre e phases: 6.2.1 first phase: loading the mdx registers. the type of calculation the mdu has to perform is selected following the order in which the mdx registers are written to. table 6 - 1 mdu registers write sequence operation 32bit/16bit 16bi t/16bit 16bit x 16bit shift/normalizing first write md0 dividend low md0 dividend low md0 multiplicand low md0 lsb md1 dividend md1 dividend high md4 multiplicator low md1 md2 dividend md1 multiplicand high md2 md3 dividend high md3 msb md4 d ivisor low md4 divisor low last write md5 divisor high md5 divisor high md5 multiplicator high arcon start conversion a write to md 0 is the first transfer to be done in any case. next writes must be done as shown in table 6 - 1 to determine mdu operation. last write finally starts selected operation. 6.2.2 second phase: executing calculation. during executing operation, the mdu works on its own parallel to the cpu. when mdu is finished, the mduf register will be set to one by hardware and the flag will clear at next calculation. mnemonic: pcon address: 87h 7 6 5 4 3 2 1 0 reset smod mduf - - - - stop idle 4 0h mduf: mdu finish flag. when mdu is finished, the mduf will be set by hardware and the bit will clear by hardware at next cal culation. table 6 - 2 mdu execution times operation number of tclk division 32bit/16bit 17 clock cycles division 16bit/16bit 9 clock cycles multiplication 11 clock cycles
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 33 - shift min 3 clock cycles , max 18 clock cycles normalize min 4 clock cycles , max 19 clock cycles 6.2.3 third phase: reading the result from the mdx registers. read out sequence of the first mdx registers is not critical but the last read (from md5 - division and md3 - multiplication, shift and normalizing) determines th e end of a whole calculation (end of phase three). table 6 - 3 mdu registers read sequence operation 32bit/16bit 16bit/16bit 16bit x 16bit shift/normalizing first read md0 quotien t low md0 quotien low md0 product low md0 lsb md1 qu otien t md1 quotien high md1 product md1 md2 quotien t md2 product md2 md3 quotien t high md4 remainder l md4 remainder low last read md5 remainder h md5 remainder high md3 product high md3 msb 6.3 normalizing all reading zeroes of integer s variables in registers md0 to md3 are removed by shift left operations. the whole operation is completed when the msb (most significant bit) of md3 register contains a ?1?. after normalizing, bits arcon.4 (msb) to arcon.0 (lsb) contain the number of shift left operations, which were done. 6.4 shifting slr bit (arcon.5) has to contain the shift direction, and arcon.4 to arcon.0 the shift count (which must not be 0). during shift, zeroes come into the left or right end of the registers md0 or md3, respectively.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 34 - 7. timer 0 and timer 1 the sm39 a16m1 has three 16 - bit timer/counter registers: timer 0, timer 1 and timer 2. all can be configured for counter or timer operations. in timer mode, the timer 0 register or timer 1 register is incremented every 1/12/96 machine c ycles, which means that it counts up after every 1/12/96 periods of the clk signal. it?s dependent on sfr(pfcon). in counter mode, the register is incremented when the falling edge is observed at the corresponding input pin t0or t1. since it takes 2 machin e cycles to recognize a 1 - to - 0 event, the maximum input count rate is 1/2 of the oscillator frequency. there are no restrictions on the duty cycle, however to ensure proper recognition of 0 or 1 state, an input should be stable for at least 1 machine cycle . four operating modes can be selected for ti mer 0 and timer 1. two special f unction registers (tmod and tcon) are used to select the appropriate mode. mnemonic description dir. bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 rst timer 0 and 1 tl0 timer 0 , low byte 8ah tl0[7:0] 00h th0 timer 0 , high byte 8ch th0[7:0] 00h tl1 timer 1 , low byte 8bh tl1[7:0] 00h th1 timer 1 , high byte 8dh th1[7:0] 00h tmod timer mode control 89h gate c/t m1 m0 gate c/t m1 m0 00h tcon timer/counter control 88h tf1 t r1 tf0 tr0 ie1 it1 ie0 it0 00h pfcon peripheral frequency control register d9h - - srelps[1:0] t1ps[1:0] t0ps[1:0] 00h 7.1 timer/counter mode control register (tmod) mnemonic: tmod address: 89h 7 6 5 4 3 2 1 0 reset gate c/t m1 m0 gate c/t m1 m0 00h tim er 1 timer 0 gate: if set, enables external gate control (pin int0 or int1 for counter 0 or 1, respectively). when int0 or int1 is high, and trx bit is set (see tcon register), a counter is incremented every falling edge on t0 or t1 input pin c/t: sele cts timer or counter operation. when set to 1, a counter operation is performed, when cleared to 0, the corresponding register will function as a timer.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 35 - m1 m0 mode function 0 0 mode0 13 - bit counter/timer, with 5 lower bits in tl0 or tl1 register an d 8 bits in th0 or th1 register (for timer 0 and timer 1, respectively). the 3 high order bits of tl0 and tl1 are hold at zero. 0 1 mode1 16 - bit counter/timer. 1 0 mode2 8 - bit auto - reload counter/timer. the reload value is kept in th0 or th1, while tl0 or tl1 is incremented every machine cycle. when tlx overflows, a value from thx is copied to tlx. 1 1 mode3 if timer 1 m1 and m0 bits are set to 1, timer 1 stops. if timer 0 m1 and m0 bits are set to 1, timer 0 acts as two independent 8 bit timers / count ers. 7.2 timer/counter control register (tcon) mnemonic: tcon address: 88h 7 6 5 4 3 2 1 0 reset tf1 tr1 tf0 tr0 ie1 it1 ie0 it0 00h tf1: timer 1 overflow flag set by hardware when timer 1 overflows. this flag can be cleared by software and is automati cally cleared when interrupt is processed. tr1: timer 1 run control bit. if cleared, timer 1 stops. tf0: timer 0 overflow flag set by hardware when timer 0 overflows. this flag can be cleared by software and is automatically cleared when interrupt is pro cessed. tr0: timer 0 run control bit. if cleared, timer 0 stops. ie1: interrupt 1 edge flag. set by hardware, when falling edge on external pin int1 is observed. cleared when interrupt is processed. it1: interrupt 1 type control bit. selects falling edg e or low level on input pin to cause interrupt. it1=1, interrupt 1 select falling edge trigger. it1=0, interrupt1 select low level trigger. ie0: interrupt 0 edge flag. set by hardware, when falling edge on external pin int0 is observed. cleared when inter rupt is processed. it0: interrupt 0 type control bit. selects falling edge or low level on input pin to cause interrupt. it0=1, interrupt 0 select falling edge trigger. it0=0, interrupt 0 select low level trigger.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 36 - 7.3 peripheral frequency control register mnemonic: pfcon address: d9h 7 6 5 4 3 2 1 0 reset - - srelps[1:0] t1ps[1:0] t0ps[1:0] 00h t 1 ps[1:0] timer 1 prescaler select t 1 ps[1:0] prescaler 00 fosc/12 01 fosc 10 fosc/96 11 reserved t0ps[1:0] timer0 prescaler select t0ps[1:0] prescaler 00 fosc/12 01 fosc 10 fosc/96 11 reserved 7.4 mode 0 (13 - bit counter/timer) fig. 7 - 1 : mode 0 - 13 bit timer / counter operation 12 osc t 1 pin c / t = 0 c / t = 1 00 01 10 t 1 ps [ 1 : 0 ] tl 1 ( 5 bits ) th 1 ( 8 bits ) tf 1 gate 1 int 1 pin not or and tr 1 0 1 0 1 et 1 ea control if not higher priority interrupt processing jump 001 bh d 0 d 1 d 2 d3 d4 d 5 d 6 d7 d0 d1 d 2 d 3 d4 d5 d6 d 7 tf 1 tl 1 th 1 96
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 37 - 7.5 mode 1 (16 - bit counter/timer) fig. 7 - 2 : mode 1 16 bit counter/timer operation 7.6 mode 2 (8 - bit auto - reload counter/timer) fig. 7 - 3 : mode 2 8 - bit auto - reload counter/timer operation. t 1 pin c / t = 0 c / t = 1 t 1 ps [ 1 : 0 ] tl 1 ( 8 bits ) th 1 ( 8 bits ) tf 1 gate 1 int 1 pin not or and tr 1 0 1 0 1 et 1 ea auto reload 12 osc 00 01 10 96 control if not higher priority interrupt processing jump 001 bh 12 osc t 1 pin c / t = 0 c / t = 1 00 01 10 t 1 ps [ 1 : 0 ] tl 1 ( 8 bits ) th 1 ( 8 bits ) tf 1 gate 1 int 1 pin not or and tr 1 0 1 0 1 et 1 ea control if not higher priority interrupt processing jump 001 bh 96 d 0 d1 d2 d3 d 4 d 5 d 6 d7 tf 1 tl 1 th 1 d 0 d1 d2 d3 d 4 d 5 d 6 d7
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 38 - 7.7 mode 3 (timer 0 acts as two independent 8 bit time rs / counters) t0 pin c/t = 0 c/t = 1 t0ps[1:0] tl0 (8 bits) tf0 gate0 /int0 pin not or and tr0 tr1 th0 (8 bits) tf1 interrupt request (001bh) 12 osc 00 01 10 96 control interrupt request (000bh) fig. 7 - 4 : mode 3 timer 0 acts as two independent 8 bit timers / counters operatin
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 39 - 8. timer 2 and capture compare unit timer 2 is not only a 16 - bit timer, also a 4 - c hannel unit with compare, capture and reload functions. it is very similar to the programmable counter array (pca) in some other mcus except pulse width modulation (pwm). mnemonic description dir. bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 rst time r 2 and capture compare unit aux auxiliary register 91h brgs p21c c - p1ur - - - dps 00h aux2 auxiliary 2 register 92h ccu3 soure ccu2 soure ccu1 soure - ccuinf[1:0] ccuinfclk [1:0] 00h t2con timer 2 control c8h t2ps[2:0] t2r[1:0] - t2i[1:0] 00h cccon c ompare/capture control c9h cci3 cci2 cci1 cci0 ccf3 ccf2 ccf1 ccf0 00h ccen compare/capture enable register c1h - cocam1[2:0] - cocam0[2:0] 00h ccen2 compare/capture enable 2 register d1h - cocam3[2:0] - cocam2[2:0] 00h tl2 timer 2, low byte cch tl 2[7:0] 00h th2 timer 2, high byte cdh th2[7:0] 00h crcl compare/reload/cap ture register, low byte cah crcl[7:0] 00h crch compare/reload/cap ture register, high byte cbh crch[7:0] 00h ccl1 compare/capture register 1, low byte c2h ccl1[7:0] 00h cch1 comp are/capture register 1, high byte c3h cch1[7:0] 00h ccl2 compare/capture register 2, low byte c4h ccl2[7:0] 00h cch2 compare/capture register 2, high byte c5h cch2[7:0] 00h ccl3 compare/capture register 3, low byte c6h ccl3[7:0] 00h cch3 compare/captur e register 3, high byte c7h cch3[7:0] 00h mnemonic: aux address: 91h 7 6 5 4 3 2 1 0 reset brgs p21cc - p1ur - - - dps 00h p 21cc : p 21 cc = 0 ? capture/compare function on p1. p 21 cc = 1 ? capture/compare function on p 2 . mnemonic: aux2 address : 92h 7 6 5 4 3 2 1 0 reset ccu3 source ccu2 source ccu1 source - ccuinf[1:0] ccuinfclk[1:0] 00h the following fig. 8 - 1 is set ccu action .
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 40 - ccu3 source : c apture input source 3 ccu3 = 0 - external pin to be ccu 3 capture input source . ccu3 = 1 - analog comparator 2 output to be ccu 3 capture input source . ccu2 source : c apture input source 2 ccu2 = 0 - external pin to be ccu2 capture input source . ccu2 = 1 - analog comparator 1 output to be ccu2 capture input so urce . ccu1 source : c apture input source 1 ccu1= 0 - external pin to be ccu 1 capture input source . ccu1= 1 - analog comparator 0 output to be ccu 1 capture input source . ccuinf [1:0] : ccu capture input noise filter(ccu1,ccu2,ccu3) ccuinf[1:0] = 00 - 1 conse cutive same value recognize as valid data. ccuinf[1:0] = 01 - 2 consecutive same value recognize as valid data. ccuinf[1:0] = 10 - 4 consecutive same value recognize as valid data. ccuinf[1:0] = 11 - 8 consecutive same value recognize as valid data. ccuin fclk[1:0] : ccu capture input noise filter(ccu1,ccu2,ccu3) frequency select. ccuinfclk[1:0] = 00 - freq/1 ccuinfclk[1:0] = 01 - freq/4 ccuinfclk[1:0] = 10 - freq/8 ccuinfclk[1:0] = 11 - freq/16 timer 2 ( 16 bits timer ) crch crcl crc auto reload for : mode 0 ( auto reload ) mode 1 ( negative edge of reload ) tf 2 overflow prescaler t 2 con . t 2 ps [ 2 :0 ] fosc cc 1 h cc 1 l m u x noise filter ccu 1 source ccuinf [ 1 : 0 ] ccuinfclk [ 1 : 0 ] sfr ( cmp 0o) cc 1 cc 0 m u x noise filter ccu 2 source ccuinf [ 1 : 0 ] ccuinfclk [ 1 : 0 ] sfr ( cmp 1o) cc 2 ccf 0 cci 0 crch crcl m u x noise filter ccu 3 source ccuinf [ 1 : 0 ] ccuinfclk [ 1 : 0 ] sfr ( cmp 2o) cc 3 cc 2 h cc 2 l cc 3 h cc 3 l ccf 3 cci 3 ccf 2 cci 2 ccf 1 cci 1 th 2 tl 2 timer 2 interrupt sfr ( et 2 ) fig. 8 - 1 : ccu action diagram
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 41 - mnemonic: t2con address: c8h 7 6 5 4 3 2 1 0 reset t2ps[2:0] t2r[1:0] - t2i[1:0] 00h t2ps[2:0]: prescaler select bit: t2ps = 000 ? timer 2 is clocked with the oscillator frequency. t2ps = 001 ? timer 2 is clocked with 1/2 of the oscil lator frequency. t2ps = 010 ? timer 2 is clocked with 1/4 of the oscillator frequency. t2ps = 011 ? timer 2 is clocked with 1/6 of the oscillator frequency. t2ps = 100 ? timer 2 is clocked with 1/8 of the oscillator frequency. t2ps = 101 ? timer 2 is clock ed with 1/12 of the oscillator frequency. t2ps = 110 ? timer 2 is clocked with 1/24 of the oscillator frequency. t2r[1:0]: timer 2 reload mode selection t2r[1:0] = 0x ? reload disabled . t2r[1:0] = 10 ? mode 0: auto reload . t2r[1:0] = 11 ? mode 1: t2ex fal ling edge reload . t2i[1:0]: timer 2 input selection t2i[1:0] = 00 ? timer 2 stop . t2i[1:0] = 01 ? input frequency from prescaler (t2ps[2:0]) . t2i[1:0] = 10 ? timer 2 is incremented by external signal at pin t2 . t2i[1:0] = 11 ? internal clock input is gate d to the timer 2 . mnemonic: cccon address: c9h 7 6 5 4 3 2 1 0 reset cci3 cci2 cci1 cci0 ccf3 ccf2 ccf1 ccf0 00h cci3: compare/capture 3 interrupt control bit. cci3 = 1 is enable. cci2: compare/capture 2 interrupt control bit. cci3 = 1 is enable. cci1: compare/capture 1 interrupt control bit. cci3 = 1 is enable. cci0: compare/capture 0 interrupt control bit. cci3 = 1 is enable. ccf3: compare/capture 3 flag set by hardware. this flag can be cleared by software. ccf2: compare/capture 2 flag set by hardware. this flag can be cleared by software. ccf1: compare/capture 1 flag set by hardware. this flag can be cleared by software. ccf0: compare/capture 0 flag set by hardware. this flag can be cleared by software. compare/capture interrupt share t 2 interrupt vector.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 42 - mnemonic: ccen address: c1h 7 6 5 4 3 2 1 0 reset - cocam1[2:0] - cocam0[2:0] 00h cocam1[2:0] : 000 - compare/capture disable . 001 - compare enable but no output on pin . 010 - compare mode 0 . 011 - compare mode 1 . 100 - capture on rising edge at pin cc1 . 101 - capture on falling edge at pin cc1 . 110 - capture on both rising and falling edge at pin cc1 . 111 - capture on write operation into register cc1 . cocam0[2:0] : 000 - compare/capture disable . 001 - compare enable but no out put on pin . 010 - compare mode 0 . 011 - compare mode 1 . 100 - capture on rising edge at pin cc0 . 101 - capture on falling edge at pin cc0 . 110 - capture on both rising and falling edge at pin cc0 . 111 - capture on write operation into register cc0 .
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 43 - mne monic: ccen2 address: d1h 7 6 5 4 3 2 1 0 reset - cocam3[2:0] - cocam2[2:0] 00h cocam3[2:0] : 000 - compare/capture disable . 001 - compare enable but no output on pin . 010 - compare mode 0 . 011 - compare mode 1 . 100 - capture on rising edge at pin cc 3 . 101 - capture on falling edge at pin cc3 . 110 - capture on both rising and falling edge at pin cc3 . 111 - capture on write operation into register cc3 . cocam2[2:0] : 000 - compare/capture disable . 001 - compare enable but no output on pin . 010 - compar e mode 0 . 011 - compare mode 1 . 100 - capture on rising edge at pin cc2 . 101 - capture on falling edge at pin cc2 . 110 - capture on both rising and falling edge at pin cc2 . 111 - capture on write operation into register cc2 . 8.1 timer 2 function timer 2 can o perate as timer, event counter, or gated timer as explained later. 8.1.1 timer mode in this mode timer 2 can by incremented in various frequency that depending on the prescaler. the prescaler is selected by bit t2ps[2:0] in register t2con. a s shown in fig. 8 - 2 fig. 8 - 2 : timer mode and reload mode function
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 44 - 8.1.2 event counter mode in this mode, the timer is incremented when external signal t2 change value from 1 to 0. the t2 input is sampled in every cycle. timer 2 is incremented in the cycle following the one in which the transition was detected. as shown in fig. 8 - 3 . fig. 8 - 3 : event counter mode function 8.1.3 gated timer mo de in this mode, the internal clock which incremented timer 2 is gated by external signal t2. as shown in fig. 8 - 4 fig. 8 - 4 : gated timer mode function 8.1.4 reload of timer 2 reload (16 - bit reload from the crc register) can be executed in the following two modes: mode 0: reload signal is generate by a timer 2 overflows - auto reload mode 1: reload signal is generate by a negative transition at the corresponding input pin t2ex.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 45 - 8.2 compare f unction in the four independent comparators, the value stored in any compare/capture register is compared with the contents of the timer register. the compare modes 0 and 1 are selected by bits c0camx . in both compare modes, the results of comparison ar rives at port 1 within the same machine cycle in which the internal compare signal is activated. 8.2.1 compare mode 0 in mode 0, when the value in timer 2 equals the value of the compare register, the output signal changes from low to high. it goes back to a lo w level on timer overflow. in this mode, writing to the port will have no effect, because the input line from the internal bus and the write - to - latch line are disconnected. as shown in fig. 8 - 5 illustrates the function of compar e mode 0. crc or ccx contents of timer 2 reload value ccx output timer 2 = ccx value timer 2 overflow fig. 8 - 5 : compare mode 0 function
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 4 6 - 8.2.2 compare mode 1 in compare mode 1, the transition of the output signal can be determined by software. a timer 2 overflow causes no out put change. in this mode, both transitions of a sig nal can be controlled. as show n in fig. 8 - 6 and fig. 8 - 7 a functional diagram of a register/port configuration in compare mode 1. in compare mode 1, th e value is written first to the ?shadow register?, when compare signal is active, this value is transferred to the output register. fig. 8 - 6 : mode 1 r egister/ p ort function crc or ccx contents of timer 2 reload value ccx output timer 2 = ccx value ccx shadow register timer 2 = ccx value fi g. 8 - 7 : compare mode 1 function 8.3 capture function actual timer/counter contents can be saved into registers ccx or crc upon an external event (mode 0) or a software write operation (mode 1).
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 47 - 8.3.1 capture mode 0 (by hardware) in mode 0, value capture of timer 2 is executed when: (1) rising edge on input cc0 - cc3 (2) falling edge on input cc0 - cc3 (3) both rising and falling edge on input cc0 - cc3 the contents of timer 2 will be latched into the appropriate capture register. a s shown in fig. 8 - 8 fig. 8 - 8 : capture mode 0 function 8.3.2 capture mode 1(by software) in mode 1, value capture of timer 2 is caused by writing any value into the low - order byte of the dedicat ed capture register. the value written to the capture register is irrelevant to this function. the contents of timer 2 will be latched into the appropriate capture register. a s shown in fig. 8 - 9 fig. 8 - 9 : capture mode 1 function
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 48 - 9. serial interface the serial buffer consists of two separate registers, a t ransmit buffer and a receive buffer. writing data to the special function register sbuf sets this data in serial output buffer and s tarts the transmission . reading from the sbuf reads data from the serial receive buffer. the serial port can simultaneously transmit and receive data. it can also buffer 1 byte at receive, which prevents the receive data from being lost if the cpu reads th e first byte before transmission of the second byte is completed. mnemonic description dir. bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 rst serial interface pcon power control 87h sm od mduf - - - - stop idle 4 0h aux auxiliary register 91h brgs p21c c - p1ur - - - dps 00h scon serial port control register 98h sm 0 sm 1 sm 2 ren tb8 rb8 ti ri 00h srell serial port reload register low byte aah srel.7 srel.6 srel.5 srel.4 srel.3 srel.2 srel.1 srel.0 00h srelh serial port reload register high byte bah - - - - - - srel.9 srel.8 00h sbuf serial port data buffer 99h sbuf[7:0] 00h pfcon peripheral frequency control register d9h - - srelps[1:0] t1ps[1:0] t0ps[1:0] 00h mnemonic: aux address: 91h 7 6 5 4 3 2 1 0 reset brgs p21cc p1ur - - dps 00h brgs: b aud rate generator. brgs = 0 - baud rate generator from timer 1. brgs = 1 - baud rate generator by srel. p 1 ur: p 1 ur = 0 - serial interface function on p 3 . p 1 ur = 1 - serial interface function on p 1 . mnemonic: scon address: 98h 7 6 5 4 3 2 1 0 reset s m 0 sm 1 sm 2 ren tb8 rb8 ti ri 00h sm 0, sm 1: serial port 0 mode selection. sm 0 sm 1 mode 0 0 0 0 1 1 1 0 2 1 1 3 the 4 modes in uart, mode 0 ~ 3, are explained later. sm 2: enables multi processor communication feature . ren: if set, enables serial rece ption. cleared by software to disable reception. tb8: the 9 th tran sm itted data bit in modes 2 and 3. set or cleared by the cpu depending on
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 49 - the function it performs such as parity check, multiprocessor communication etc. rb8: in modes 2 and 3, it is the 9 th data bit received. in mode 1, if sm 2 is 0, rb8 is the stop bit. in mode 0, this bit is not used. must be cleared by software. ti: tran sm it interrupt flag, set by hardware after completion of a serial transfer. must be cleared by software. ri: receiv e interrupt flag, set by hardware after completion of a serial reception. must be cleared by software. 9.1 serial interface the serial interface can operate in the following 4 modes: sm 0 sm 1 mode description board rate 0 0 0 shift register fosc/12 0 1 1 8 - bit uart variable 1 0 2 9 - bit uart fosc/32 or fosc/64 1 1 3 9 - bit uart variable here fosc is the crystal or oscillator frequency. 9.1.1 mode 0 pin rxd serves as input and output. txd outputs the shift clock. 8 bits are tran sm itted with lsb first. the baud rat e is fixed at 1/12 of the crystal frequency. reception is initialized in mode 0 by setting the flags in scon as follows: ri = 0 and ren = 1. in other modes, a start bit when ren = 1 starts receiving serial data. a s shown in fig. 9 - 1 and fig. 9 - 2 fig. 9 - 1 : tran sm it mode 0 fig. 9 - 2 : receive mode 0
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 50 - 9.1.2 mode 1 pin rxd serves as input, and txd serves as serial output. no external shift clock is used, 10 bits are tran sm itted: a start bit (always 0), 8 data bits (lsb first), and a stop bit (always 1). on receive, a start bit synchronizes the tran sm ission, 8 data bits are available by reading sbuf, and stop bit sets the f lag rb8 in the special function register scon. in mode 1 either internal baud rate generator or timer 1 can be use to specify baud rate. a s shown in fig. 9 - 3 and fig. 9 - 4 fig. 9 - 3 : transmit mode 1 fig. 9 - 4 : receive mode 1 9.1.3 mode 2 this mode is similar to mode 1, with two differences. the baud rate is fixed at 1/32 ( smod =1) or 1/64( smod =0) of oscillator frequency and 11 bits are transmitted or received: a start bit (0), 8 data bits (lsb first), a programmable 9 th bit, and a stop bit (1). the 9 th bit can be used to control the parity of the serial interface: at transmission , bit tb8 in scon is output as the 9 th bit , and at receive, the 9 th bit affects rb8 in special function register scon. 9.1.4 mode 3 the only difference between mode 2 and mode 3 is that in mode 3 either internal baud rate generator or timer 1 can be use to specify baud rate. a s shown in fig. 9 - 5 and fig. 9 - 6 . fig. 9 - 5 : transmit modes 2 and 3
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 51 - fig. 9 - 6 : receive modes 2 and 3 9.2 multiprocessor communication of s erial interface the feature of receiving 9 bits in modes 2 and 3 of serial interface can be used for multiprocessor communication. in this case, the slave processors have bit sm 2 in scon set to 1. when the master processor outputs slave?s address, it sets the 9 th bit to 1, causing a serial port receive interrupt in all the slaves. the slave processors compare the received byte with their network address. if there is a match, the addressed slave will clear sm 2 and receive the rest of the message, while other slaves will leave sm 2 bit unaffected and ignore this message. after addressing the slave, the host will output the rest of the message with the 9 th bit set to 0, so no serial port receive interrupt will be generated in unselected slaves. 9.3 peripheral freque ncy control register mnemonic: pfcon address: d9h 7 6 5 4 3 2 1 0 reset - - srelps[1:0] t1ps[1:0] t0ps[1:0] 00h srelps[1:0]: srel prescaler select srelps[1:0] prescaler 00 fosc/64 01 fosc /32 t1ps[1:0]: timer1 prescaler select t1ps[1:0] prescal er 00 fosc/12 01 fosc 10 fosc/96 11 reserved
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 52 - 9.4 baud rate generator 9.4.1 serial interface modes 1 and 3 9.4.1.1 when brgs = 0 (in special function register aux). (1) t1ps[1:0] is 00 ( ) th1 256 12 32 f 2 rate baud osc smod ? = (2) t1ps[1:0] is 01 ( ) th1 256 32 f 2 rate baud osc smod ? = (3) t1ps[1:0] is 10 ( ) th1 256 96 32 f 2 rate baud osc smod ? = 9.4.1.2 when brgs = 1 (in special function register aux). (1) srelps[1:0] is 00 ( ) srel 2 64 f 2 rate baud 10 osc smod ? = (2) srelps[1:0] is 01 ( ) srel 2 32 f 2 rate baud 10 osc smod ? =
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 53 - 10. watchdog timer the watch dog timer (wdt) is an 8 - bit free - running counter that generate rese t signal if the counter overflows. the wdt is useful for systems which are susceptible to noise, power glitches, or electronics discharge which causing software dead loop or runaway. the wdt function can help user software recover from abnormal software co ndition. the wdt is different from timer0, timer1 and timer2 of general 8052. to prevent a wdt reset can be done by software periodically clearing the wdt counter. user should check wdtf bit of wdtc register whenever un - predicted reset happened. after an e xternal reset the watchdog timer is disabled and all registers are set to zeros. the watchdog timer has a free r unning on - chip rc oscillator (2 3 khz). the wdt will keep on running even after the system clock has been turned off (for example, in sleep mode ). during normal operation or sleep mode, a wdt time - out (if enabled) will cause the mcu to reset. the wdt can be enabled or disabled any time during the normal mode. please refer the wdte bit of wdtc register. the default wdt time - o ut period is approximat ely 1 78.0 ms (wdtm [3:0] = 0100b). the wdt has selectable divider input for the time base source clock. to select the divider input, the setting of bit3 ~ bit0 (wdtm [3:0]) of watch dog timer control register (wdtc) should be set accordingly . as shown in table 10 - 1 . wdtm 2 23khz = wdtclk watchdog reset time = wdtclk 256 table 10- 1 : wdt time - out period wdtm [3:0] divider (2 3 khz rc oscillator in) time period @ 2 3 khz 0 000 1 1 1.1 ms 0001 2 22.2 ms 0010 4 44.5 ms 0011 8 89. 0 ms 0100 16 178.0 ms (default) 0101 32 356.1 ms 0110 64 712.3 ms 0111 128 1. 4246 s 1000 256 2.8493 s 1001 512 5.6987 s 1010 1024 11.397 s 1011 2048 22.795 s 1100 4096 45.590 s 1101 8192 91.180 s 1110 1 6384 182.36 s 1111 32768 364.72 s note: rc oscillator ( 23 khz ), about 20% of varia tion when mcu is reset, the mcu will be read wdten control bit status. when wdten bit is set to 1, the watchdog function will be disabled no matter what the wdte bit status is. when wdten bit is clear to 0, the watchdog function will be enabled if wdte bit is set to 1 by program. user can to set wdten on the writer or isp. the program can enable the wdt function by programming 1 to the wdte bit premise that wdten control bit is clear to 0. after wdte set to 1, the 8 bit - counter starts to count with the selected time base source clock which set by wdtm [3:0]. it will generate a reset signal when overflows. the wdte bit will be cleared to 0 automatically when mcu been reset, ei ther hardware reset or wdt reset . as shown in fig. 10 - 1 .
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 54 - once the watchdog is started it cannot be stopped. user can refreshed the watchdog timer to zero by writing 0x55 to watch dog timer refresh key (wdtk) register. this will cl ear the content of the 8 - bit counter and let the counter re - start to count from the beginning. the watchdog timer must be refreshed regularly to prevent reset request signal from becoming active. when watchdog timer is overflow, the wdtf flag will set to o ne and automatically reset mcu. the wdtf flag can be clear by software or external reset or power on reset. 23khz rc oscillator wdtm 2 1 wdtc takey (55, aa, 5a) wdtm[3:0] wdten enable/disable wdt wdt counter wdtclk wdtk (0x55) refresh wdt counter 1. power on reset 2. external reset 3. software write ?0? wdtf set wdtf = 1 clear wdtf = 0 wdt time-out reset enable wdtc write attribute wdt time-out select wdt time-out interrupt cwdtr = 0 cwdtr = 1 fig. 10 - 1 : watchdog timer block diagram mnemonic description dir. bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 rst watchdog timer takey time access key register f7h takey [7:0] 00h wdtc watchdog timer control register b6h - cwdt r wdte - wdtm [3:0] 04h wdtk watchdog timer refresh key b7h wdtk[7:0] 00h rsts reset stat us register a1h - - - pdrf wdtf swrf lvrf porf 00h mnemonic: takey address: f7h 7 6 5 4 3 2 1 0 reset takey [7:0] 00h watchdog timer control register (wdtc) is read - only by default; software must write three specific values 55h, aah and 5ah sequenti ally to the takey register to enable the wdtc write attribute. that is: mov takey, #55h mov takey, #0aah mov takey, #5ah
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 55 - mnemonic: wdtc address: b6h 7 6 5 4 3 2 1 0 reset - cwdtr wdte - wdtm [3:0] 04h cwdtr: watch dog states select bit(support stop mode wakeup) cwdtr = 0 - enable watch dog reset. cwdtr = 1 - enable watch dog interrup t. wdte: control bit used to enable watchdog timer. the wdte bit can be used only if wdten is "0". if the wdten bit is "0", then wdt can be disabled / enabled by the wd te bit. wdte = 0 - disable wdt. wdte = 1 - enable wdt. the wdte bit is not used if wdten is "1". that is, if the wdten bit is "1", wdt is always disabled no matter what the wdte bit status is. the wdte bit can be read and written. wdtm [3:0]: wdt clock so urce d ivider bit. as seen in fig. 10 - 1 to reference the wdt time - out period. mnemonic: rsts address: a1h 7 6 5 4 3 2 1 0 reset - - - pdr f wdtf swrf lvrf porf 00h wdtf: watchdog timer reset flag. when mcu is reset by watchdo g, wdtf flag will be set to one by hardware. this flag clear by software mnemonic: wdtk address: b7h 7 6 5 4 3 2 1 0 reset wdtk[7:0] 00h wdtk: watchdog timer refresh key. a programmer must write 0x55 into wdtk register, and then the watchdog timer wi ll be cleared to zero. for example 1, if enable wdt and select time - out reset period is 2.8493 s. first, programming the information block op3 bit7 wdten to ?0?. secondly, mov takey, #55h mov takey, #0aah mov takey, #5ah ; enable wdtc write attribute. mov wdtc, #28h ; set wdtm [3:0] = 1000b. set wdte =1 to enable wdt function. . . . mov wdtk, #55h ; clear wdt timer to 0.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 56 - for example 2, if enable wdt and select tim e - out interrupt period is 178.0m s. first, programming the information block op3 bit 7 wdten to ?0?. secondly, mov takey, #55h mov takey, #0aah mov takey, #5ah ; enable wdtc write attribute. mov wdtc, #64h ; set wdtm [3:0] = 01 00b. ;set wdte =1 to enable wdt function ; and set cwdtr =1 to enable period interrupt function
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 57 - 11. interrupt the sm39 a16m1 provides 1 3 interrupt sources with four priority levels. each source has its own request flag(s) located in a special function register. each interrupt requested by the corresponding flag could individuall y be enabled or disabled by the enabl e bits in sfr?s ien0, ien1 . when the interrupt occurs, the engine will vector to the predetermined address as given in table 11 - 1 . once interrupt service has begun, it can be interrupted only b y a higher priority interrupt. the interrupt service is terminated by a return from instruction reti. when an reti is performed, the processor will return to the instruction that would have been next when interrupt occurred. when the interrupt condition oc curs, the processor will also indicate this by setting a flag bit. this bit is set regardless of whether the interrupt is enabled or disabled. each interrupt flag is sampled once per machine cycle, and then samples are polled by hardware. if the sample ind icates a pending interrupt when the interrupt is enabled, then interrupt request flag is set. on the next instruction cycle the interrupt will be acknowledged by hardware forcing an lcall to appropriate vector address. interrupt response will require a var ying amount of time depending on the state of microcontroller when the interrupt occurs. if microcontroller is performing an interrupt service with equal or greater priority, the new interrupt will not be invoked. in other cases, the response time depends on current instruction. the fastest possible response to an interrupt is 7 machine cycles. this includes one machine cycle for detecting the interrupt and six cycles for perform the lcall. table 11 - 1 : interru pt vectors interrupt request flags interrupt vector address interrupt number *(use keil c tool) 1 ie0 ? external interrupt 0 0003h 0 2 tf0 ? timer 0 interrupt 000bh 1 3 ie1 ? external interrupt 1 0013h 2 4 tf1 ? timer 1 interrupt 001bh 3 5 ri/t i ? serial channel interrupt 0023h 4 6 tf2/exf2 ? timer 2 interrupt 002bh 5 7 pwmif ? pwm interrupt 0043h 8 8 spiif ? spi interrupt 004bh 9 9 adcif ? a/d converter interrupt 0053h 10 1 0 lviif ? low voltage interrupt 0063h 12 1 1 iicif ? iic interrupt 006bh 13 1 2 wdt ? watchdog interrupt 008bh 17 1 3 comparator interrupt 0093h 18 *see keil c about c51 user?s guide about interrupt function description
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 58 - mnemonic description dir. bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 rst interrupt ien0 in terrupt enable 0 register a8h ea - et2 es et1 ex1 et0 ex0 00h ien1 interrupt enable 1 register b8h exen 2 - ieiic ielvi - ieadc iespi - 00h ien2 interrupt enable 2 register 9ah - - - - - ecmpi ewdt - 00h ircon interrupt request register c0h exf2 tf2 iici f lviif adcif spiif 00h ircon2 interrupt request register 2 97h - - - - - cmpif wdt if - 00h ip0 interrupt priority level 0 a9h - - ip0.5 ip0.4 ip0.3 ip0.2 ip0.1 ip0.0 00h ip1 interrupt priority level 1 b9h - - ip1.5 ip1.4 ip1.3 ip1.2 ip1.1 ip1.0 00h mnemonic: ien0 address: a8h 7 6 5 4 3 2 1 0 reset ea - et2 es et1 ex1 et0 ex0 00h ea: ea=0 ? disable all interrupt. ea=1 ? enable all interrupt. et2: et2=0 ? disable timer 2 overflow or external reload interrupt. et2=1 ? enable timer 2 overflow or e xternal reload interrupt. es: es=0 ? disable serial channel interrupt. es=1 ? enable serial channel interrupt. et1: et1=0 ? disable timer 1 overflow interrupt. et1=1 ? enable timer 1 overflow interrupt. ex1: ex1=0 ? disable external interrupt 1. ex1=1 ? enable external interrupt 1. et0: et0=0 ? disable timer 0 overflow interrupt. et0=1 ? enable timer 0 overflow interrupt. ex0: ex0=0 ? disable external interrupt 0. ex0=1 ? enable external interrupt 0. mnemonic: ien1 address: b8h 7 6 5 4 3 2 1 0 reset exen2 - ieiic ielvi - ieadc iespi - 00h exen2: timer 2 reload interrupt enable. exen2 = 0 ? disable timer 2 external reload interrupt. exen2 = 1 ? enable timer 2 external reload interrupt. ieiic: iic interrupt enable. ieiics = 0 ? disable iic interrup t.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 59 - ieiics = 1 ? enable iic interrupt. ielvi: lvi interrupt enable. ielvi = 0 ? disable lvi interrupt. ielvi = 1 ? enable lvi interrupt. ieadc: a/d converter interrupt enable ieadc = 0 ? disable adc interrupt. ieadc = 1 ? enable adc interrupt. iespi: spi interrupt enable. iespi = 0 ? disable spi interrupt. iespi = 1 ? enable spi interrupt. mnemonic: ien2 address: 9ah 7 6 5 4 3 2 1 0 reset - - - - - ecmpi ewdt - 00h ecmpi : enable comparator interrupt (include comparator_0 and comparator_1). ecmpi = 0 ? disable comparator interrupt. ecmpi = 1 ? enable comparator interrupt. ewdt : enable watch dog interrupt. ewdt = 0 ? disable watch dog interrupt. ewdt = 1 ? enable watch dog interrupt. mnemonic: ircon address: c0h 7 6 5 4 3 2 1 0 reset exf2 tf2 iici f lviif - adcif spiif - 00h exf2: timer 2 external reload flag. must be cleared by software. tf2: timer 2 overflow flag. must be cleared by software. iicif: iic interrupt flag. hardware will clear this flag automatically when enter interrupt vector . l viif: lvi interrupt flag. hardware will clear this flag automatically when enter interrupt vector . adcif: a/d converter end interrupt flag. hardware will clear this flag automatically when enter interrupt vector . spiif: spi interrupt flag. hardware will clear this flag automatically when enter interrupt vector .
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 60 - mnemonic:ircon2 address: 97h 7 6 5 4 3 2 1 0 reset - - - - - cmpif wdtif - 00h cmpif comparator interrupt flag . hw will clear this flag automatically when enter interrupt vector. sw can cle ar this flag also.(in case analog comparator int disable) wdtif: watch dog interrupt flag . hardware will clear this flag automatically when enter interrupt vector . 11.1 priority level structure all interrupt sources are combined in groups , as given in table 11 - 2 . table 11 - 2 : priority level groups groups external interrupt 0 - pwm interrupt timer 0 interrupt watchdog interrupt spi interrupt external interrupt 1 comparator interrupt adc interrupt timer 1 interrupt - serial channel interrupt - lvi interrupt timer 2 interrupt - iic interrupt each group of interrupt sources can be programmed individually to one of four priority levels by setting or clearing one bit in the speci al function register ip0 and one in ip1. if requests of the same priority level will be received simultaneously, an internal polling sequence determines which request is serviced first. as given in table 11 - 3 and table 11 - 4 and table 11 - 5 . mnemonic: ip0 address: a9h 7 6 5 4 3 2 1 0 reset - - ip0.5 ip0.4 ip0.3 ip0.2 ip0.1 ip0.0 00h mnemonic: ip1 address: b9h 7 6 5 4 3 2 1 0 reset - - ip1.5 ip1.4 ip1.3 ip1.2 ip1.1 ip1.0 00h table 11 - 3 : priority levels ip1.x ip0.x priority level 0 0 level0 (lowest) 0 1 level1 1 0 level2 1 1 level3 (highest)
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 61 - table 11 - 4 : groups of priority bit group ip1.0, ip0.0 external interrupt 0 - pwm interrupt ip1.1, ip0.1 timer 0 interrupt watchdog interrupt spi interrupt ip1.2, ip0.2 external interrupt 1 comparator interrupt adc interrupt ip1.3, ip0.3 timer 1 interrupt - ip1.4, ip0.4 ser ial channel interrupt - lvi interrupt ip1.5, ip0.5 timer 2 interrupt - iic interrupt table 11 - 5 : polling sequence interrupt source sequence external interrupt 0 pwm interrupt timer 0 interrupt watchdog inter rupt spi interrupt external interrupt 1 comparator interrupt adc interrupt timer 1 interrupt serial channel interrupt lvi interrupt timer 2 interrupt iic interrupt polling sequence
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 62 - 12. power management unit power management unit serves two power management modes, idle and stop, for the users to do power saving function. mnemonic: pcon address: 87h 7 6 5 4 3 2 1 0 reset sm od mduf - - - - stop idle 4 0h stop: stop mode control bit. setting this bit turning on the stop mode. stop bit is always read as 0 . idle: idle mode control bit. setting this bit turning on the idle mode. idle bit is always read as 0 . 12.1 idle mode setting the idle bit of pcon register invokes the idle mode. the idle mode leaves internal clocks and peripherals running. power consumption d rops because the cpu is not active. the cpu can exit the idle state with any interrupts or a reset. 12.2 stop mode setting the stop bit of pcon register invokes the stop mode. all internal clocking in this mode is turn off. the cpu will exit this state from a n o - clocked interrupt (external int0/1 , lvi , watchdog interrupt , and comparator interrupt ) or a reset (wdt and lvr) condition. internally generated interrupts (timer, serial port ...) have no effect on stop mode since they require clocking activity.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 63 - 13. pulse width modulation (pwm) pwm module features : ? eight - channel (four - pair) pwm output pins. ? 14- bit resolution. ? center and edge alignment output mode. ? dead time generator. ? pwm and special event interrupt trigger. ? output override function for motor control. ? over drive current protect for the fault (flta and fltb) there under is the working module of the pwm, as shown i n fig. 13 - 1 output driver block pwm0 pwm1 pwm2 pwm3 pwm4 pwm5 pwm6 pwm7 pair 3 dead time generator 3 override logic pair 2 dead time generator 2 override logic pair 1 dead time generator 1 override logic pair 0 dead time generator 0 override logic pwm pair3 generator duty pwm pair2 generator duty pwm pair1 generator duty pwm pair0 generator duty nfltb nflta tbcounter comparator period reg. period(sfr) comparator sevtcmp sevtdir pwmbtdir special event postscaler sevtif special event trigger special event interrupt special event interrupt enable pwm interrupt pwmpif pwm period interrupt enable pwm time base postscaler pwm_sync fig. 13 - 1 : w orking module of the pwm
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 64 - the interrupt vector is 43h. mnemonic description dir. bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 rst pwm adcc2 adc control 2 reg. ach start adju st pwmt rigger en exttri ggere n adcm od e adcch[2:0] 08h pwmtbc0 pwm time base control 0 reg. f9h - - - - pwmtbpre [1:0] pwmtbmod [1:0] 00h pwmtbc1 pwm time base control 1 reg. fa h pwmt ben - - pwm protec tdis - - sevt ie pwmp ie 10h pwmopmo d pwm output pair mode reg. fb h - - - - pwm op3 mod pwm op2 mod pwm op1 mod pwm op0 mod 00h tbcounte rl time base co unter (low) fc h time base counter low 8 bit 00h tbcounte rh time base counter (high) fd h - - time base counter high 6 bit 00h periodl pwm period (low) reg. f1 h pwm period low 8 bit ffh periodh pwm period (high) reg. f2 h - - pwm period high 6 bit 3fh se vtcmpl special event compare low reg. f3 h special event compare low 8 bit ffh sevtcmph special event compare high reg. f4 h - - special event compare high 6 bit 3fh pwmen pwm output enable reg. f5 h pwm7 en pwm6 en pwm5 en pwm4 en pwm3 en pwm2 en pwm1 en pw m0 en 00h pwmsev pwm special event reg. ed h sevpost[3:0] sevt dir - udis osyn c 00h pwmtbpo stscale pwm time base post scale reg. ee h pwmtbpost[7:0] 00h pwmintf pwm int flag reg. bch pwmt bdir - - - - - sevt if pwmp if 00h deadtime 0 dead time 0 reg. e9 h dt 0pre[1:0] dt0[5:0] 00h deadtime 1 dead time 1 reg. ea h dt1pre[1:0] dt1[5:0] 00h deadtime 2 dead time 2 reg. eb h dt2pre[1:0] dt2[5:0] 00h deadtime 3 dead time 3 reg. ec h dt3pre[1:0] dt3[5:0] 00h fltconfig fault config reg. db h brfe n fltbs fltb mod fltb en flt con flta s flta mod flta en 80h fltnf fault noise filter reg. dch - - fltb ls flta ls fltbnf[1:0] fltanf[1:0] 00h pwmpola rity pwm polarity reg. ddh polarit y7 polarit y6 polarit y5 polarit y4 polarit y3 polarit y2 polarit y1 polarit y0 ffh ovridedis overrid e disable reg. de h ov7 dis ov6 dis ov5 dis ov4 dis ov3 dis ov2 dis ov1 dis ov0 dis ffh ovrideda override data df h ov7 ov6 ov5 ov4 ov3 ov2 ov1 ov0 00h
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 65 - ta reg. data data data data data data data data duty0l pwm 0 duty low byte reg. d1 h pwm0 duty low 8 bit 0 0h duty0h pwm 0 data high byte reg. d2 h - - pwm0 duty high 6 bit 00h duty1l pwm 1 duty low byte reg. d3 h pwm1 duty low 8 bit 00h duty1h pwm 1 data high byte reg. d4 h - - pwm1 duty high 6 bit 00h duty2l pwm 2 duty low byte reg. d5 h pwm2 duty low 8 bit 0 0h duty2h pwm 2 duty high byte reg. d6 h - - pwm2 duty high 6 bit 00h duty3l pwm 3 duty low byte reg. d7 h pwm3 duty low 8 bit 00h duty3h pwm 3 duty high byte reg. c9 h - - pwm3 duty high 6 bit 00h mnemonic: adcc2 ( adc control r egister 2 ) address: ac h 7 6 5 4 3 2 1 0 reset start adjust pwmtri ggeren exttrig geren adcmo de adcch[2:0] 0 8 h star t : when this bit is set, the adc will be start conversion. (sw trigger conversion) adjust : adjust the format of adc conversion data. adjust = 0: (default value) ad c data high byte adcd [9:2] = adcdh [7:0]. adc data low byte adcd [1:0] = adcdl [1:0]. adjust = 1: adc data high byte adcd [9:8] = adcdh [1:0]. adc data low byte adcd [7:0] = adcdl [7:0]. pwmtriggeren : pwm trigger adc to start conv ersion. (hw internal trigger conversion) 0 = d isable 1 = e nable exttriggeren : external pin trigger adc to start conversion. (hw external trigger conversion) 0 = d isable 1 = e nable adcmod e : 0 = c ontinuous mode 1 = s ingle - shot mode adcch[2:0] : adc channel select.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 66 - adcch [2:0] channel 000 0 001 1 010 2 011 3 100 4 101 5 110 6 111 7 mnemonic: pwmtbc0 (pwm time base control 0) address: f9 h 7 6 5 4 3 2 1 0 reset - - - - pwmtbpre[1:0] pwmtbmod[1:0] 00h pwmtbpre[1:0] : pwm time base presca le pwm tbpre [ 1 :0] mode 00 fosc 01 fosc/4 10 fosc/16 11 fosc/64 pwm tbmod : pwm time base mode pwmtbmod [1:0] = 00 - free running mode ( edge - align ). pwmtbmod [1:0] = 01 - s ingle - shot mode ( edge - align ). pwmtbmod [1:0] = 10 - c ontinuous up/down counti ng mode (c enter - align ). ( tbcounter = period g enerate an interrupt ) pwmtbmod [1:0] = 11 - c ontinuous up/down counting with interrupt for double pwm updates (c enter - align ) . ( tbcounter = period and tbcounter = 0 g enerate an interrupt ) freq = 24mhz, period = 14 bit prescale pwm frequency edge - align pwm frequency c enter - align 1:1 1500 hz 750 hz 1:4 375 hz 188 hz 1:16 94 hz 47 hz 1:64 23 hz 12 hz mnemonic: pwmtbc1 (pwm time base control 1) address: fa h 7 6 5 4 3 2 1 0 reset pwmtb en - - pwmpro tectdis - - sevtie pwmpie 10h
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 67 - pwm tben : pwm time base enable . 0 = pwm time base disable . 1 = pwm time base enable . wmprotectdis: pwm protect set (fool proof circuit) . 0 = enable . (aaply to complementary mode .) 1 = disable . pwm0/pwm1, pwm2/pw m3, pwm4/pwm5, pwm6/pwm7, protect enable/disable. sevtie: special event interrupt enable . sevtie = 0 - special event interrupt disable . sevtie = 1 - special event interrupt enable . pwmpie: pwm period interrupt enable . pwmpie = 0 - pwm period interrupt di able . pwmpie = 1 - pwm period interrupt enable . pwm 0(/2/4/6) pwm 1(/3/5/7) pwm 0(/2/4/6) pwm 1(/3/5/7) in - active in - active protect ? in - active in - active polarity ? in - active active in - active active active in - active active in - acti ve active active in - active in - active fig. 13 - 2 : opertion of the pwm protect mode
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 68 - mnemonic: pwmop m od (pwm output pair mode) address: fb h 7 6 5 4 3 2 1 0 reset - - - - pwmop3 mod pwmop2 mod pw mop1 mod pwmop0 mod 00h pwmop3mod : pwm output pair 3 mode . 0 = (pwm6, pwm7) is complementary mode . 1 = (pwm6, pwm7) is independent mode . pwmop2mod : pwm output pair 2 mode . 0 = (pwm4, pwm5) is complementary mode . 1 = (pwm4, pwm5) is independent mode . pwmo p1mod : pwm output pair 1 mode . 0 = (pwm2, pwm3) is complementary mode . 1 = (pwm2, pwm3) is independent mode . pwmop0mod : pwm output pair 0 mode . 0 = (pwm0, pwm1) is complementary mode . 1 = (pwm0, pwm1) is independent mode . mnemonic: pwmen address: f5 h 7 6 5 4 3 2 1 0 reset pwm7en pwm6en pwm5en pwm4en pwm3en pwm2en pwm1en pwm0en 00h pwm 7en : pwm 7 enable . pwm7en = 0 - pwm 7 output disable . pwm7en = 1 - pwm 7 output enable . pwm 6en : pwm 6 enable . pwm6en = 0 - pwm 6 output disable . pwm6en = 1 - pwm 6 output enable . pwm 5en : pwm 5 enable . pwm5en = 0 - pwm 5 output disable . pwm5en = 1 - pwm 5 output enable . pwm 4en : pwm 4 enable . pwm4en = 0 - pwm 4 output disable . pwm4en = 1 - pwm 4 output enable . pwm 3en : pwm 3 enable . pwm3en = 0 - pwm 3 output disable . pw m3en = 1 - pwm 3 output enable . pwm 2en : pwm 2 enable . pwm2en = 0 - pwm 2 output disable . pwm2en = 1 - pwm 2 output enable .
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 69 - pwm 1en : pwm 1 enable . pwm1en =0 - pwm 1 output disable . pwm1en =1 - pwm 1 output enable . pwm 0en : pwm 0 enable . pwm0en =0 - pwm 0 output disable . pwm0en =1 - pwm 0 output enable . mnemonic: pwmsev (pwm special event) address: ed h 7 6 5 4 3 2 1 0 reset sevpost[3:0] sevtdir - udis osync 00h sevpost : sevpost [3:0] sevpost [3:0] special event postscale set (how many pwm period happen wi ll a triger need) 0000 = 1:1 postscale 0001 = 1:2 postscale : : sevpost [3:0] 1111 = 1:16 postscale sevtdir : s pecial ev ent trigger time base direction. sevtdir = 0 - pwm time base is counting upwards. sevtdir = 1 - pwm time base is counting downw ards. udis : pwm update disable . ( this bit affects period, duty, sevtcmp; ovridedis, ovridedata) udis = 0 - u pdate from duty cycle and period buffer are enable . udis = 1 - u pdate from duty cycle and period buffer are disable . osync : pwm output override s ynchronization . osync = 0 - output overrides via the ovridedis register are asynchronous. osync = 1 - output overrides via the ovridedis register are synchronized to the pwm time base. mnemonic: pwm tbpostscale address: ee h 7 6 5 4 3 2 1 0 reset pwmtbpost [7:0] 00h pwmtbpost [7:0] pwm time base post scale. (how many pwm period happen will a triger need) 0000_0000 = 1: 1 postscale 0000_0001 = 1: 2 postscale : : 0000_1111 = 1: 16 postscale 0001_0000 = 1: 17 postscale
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 70 - : : 1111_1111 = 1: 256 postscale mnemonic: pwmintf (pwm interrupt flag) address: bch 7 6 5 4 3 2 1 0 reset pwmtb dir - - - - - sevtif pwmp if 00h pwmtbdir : pwm time base count direction status . (read only) 0 = c ounts up . 1 = c ounts down . sevt if : special event interrupt flag . must be cleared by software. pwmpif : pwm period interrupt flag . must be cleared by software. 13.1 dead time when the half - bridge circuit is applying, at the same time of upper and lower arm turn state period, due to chara cters of ton and toff, power crystal can not instantaneous complete turn state, so as to cause a short circuit, then must spare a certain time to allow power crystal turn state. each pair of complementary pwm output have a 6 bit down counter, due to produc e dead time as below figure , each dead time unit has a rising edge and falling edge detector, according to the counter and when the value of number is zero, the output is just converte d. as shown in fig. 13 - 3 . compare output pwm1 pwm0 td td 0 ) 1 0 ( 2 dt fosc td pre dt + = fig. 13 - 3 : pwm output compare
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 71 - mnemonic: deadtime0 (dead time 0 for pwm pair 0) address: e9 h 7 6 5 4 3 2 1 0 reset dt0pre[1:0] dt0[5:0] 00h dt0pre[1:0] : dead time 0 prescale 00 = fosc/2 01 = fosc/4 10 = fosc/8 11 = fosc/16 dt0[5:0] : dead time 0 00_0000 = 1 dead time 0 unit. 00_0001 = 2 dead time 0 units . 11_1111 = 64 dead time 0 units . freq = 24mhz, period = 14 bit prescale dead time min dead time max 1:2 83 ns 5.3 us (to apply to ccd) 1:4 166 ns 10.6 us 1:8 332 ns 21.2 us 1:16 664 ns 42.4 us mnemonic: deadtime 1 (dead time 1 for pwm pair 1) address: e a h 7 6 5 4 3 2 1 0 reset dt 1 pre[1:0] dt1[5:0] 00h dt 1 pre[1:0] : dead time 1 prescale 00 = fosc/2 01 = fosc/4 10 = fosc/8 11 = fosc/16 dt 1 [5:0] : dead time 1 00_0000 = 1 dead time 1 unit. 00_0001 = 2 dead time 1 units 11_1111 = 64 dead time 1 units . mnemonic: deadtime 2 (dead time 2 for pwm pair 2 ) address: e b h 7 6 5 4 3 2 1 0 reset dt 2 pre[1:0] dt 2 [5:0] 00h dt 2 pre[1:0] : dead time 2 prescale
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 72 - 00 = fosc/2 01 = fosc/4 10 = fosc/8 11 = fosc/16 dt 2 [5:0] : dead time 2 00_0000 = 1 dead time 2 unit. 00_0001 = 2 dead time 2 units 11_1111 = 64 dead time 2 units . mnemonic: deadtime 3 (dead time 3 for pwm pair 3 ) address: e c h 7 6 5 4 3 2 1 0 reset dt 3 pre[1:0] dt 3 [5:0] 00h dt 3 pre[1:0] : dead time 3 prescale 00 = fosc/2 01 = fosc/4 10 = fosc/8 11 = fosc/16 dt 3 [5:0] : dead time 3 00_0000 = 1 dead time 3 unit. 00_0001 = 2 dead time 3 units 11_1111 = 64 d ead time 3 units . mnemonic: ovridedis (override disable) address: de h 7 6 5 4 3 2 1 0 reset ov7dis ov6dis ov5dis ov4dis ov3dis ov2dis ov1dis ov0dis ffh ov7dis : override disable 7 action selection ov7dis = 0 - pwm 7 override enable . ov7dis = 1 - pwm 7 override disable . ov6dis : override disable 6 action selection ov6dis = 0 - pwm 6 override enable . ov6dis = 1 - pwm 6 override disable. ov5dis : override disable 5 action selection ov5dis = 0 - pwm 5 override enable . ov5dis = 1 - pwm 5 override disable . ov4dis : override disable 4 action selection ov 4 dis = 0 - pwm 4 override enable .
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 73 - ov 4 dis = 1 - pwm 4 override disable . ov3dis : override disable 3 action selection ov3dis = 0 - pwm 3 override enable . ov3dis = 1 - pwm 3 override disable . ov2dis : override disable 2 action selection ov2dis = 0 - pwm 2 override enable . ov2dis = 1 - pwm 2 override disable . ov1dis : override disable 1 action selection ov1dis = 0 - pwm 1 override enable . ov1dis = 1 - pwm 1 override disable. ov0dis : override disable 0 action se lection ov0dis = 0 - pwm 0 override enable . ov0dis = 1 - pwm 0 override disable. mnemonic: ovridedata (override data) address: df h 7 6 5 4 3 2 1 0 reset ov7data ov6data ov5data ov4data ov3data ov2data ov1data ov0dat a 00h ov7data : o vride d ata 7 ov 7 da ta = 0 - pwm 7 override data . ov 7 data = 1 - pwm 7 override data . ov6data : ovride data 6 ov6data = 0 - pwm 6 override data . ov6data = 1 - pwm 6 override data. ov5data : ovride data 5 ov5data = 0 - pwm 5 override data . ov5data = 1 - pwm 5 override data . ov4data : ovride data 4 ov4data = 0 - pwm 4 override data . ov4data = 1 - pwm 4 override data . ov3data : ovride data 3 ov 3 data = 0 - pwm 3 override data . ov 3 data = 1 - pwm 3 override data . ov2data : ovride data 2 ov 2 data = 0 - pwm 2 override data . ov 2 dat a = 1 - pwm 2 override data . ov1data : ovride data 1 ov1data = 0 - pwm 1 override data . ov1data = 1 - pwm 1 override data.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 74 - ov0data : ovride data 0 ov0data = 0 - pwm 0 override data . ov0data = 1 - pwm 0 override data . example: pwm output overrides wavefor m. period cycle ovridedis[7:0] ovridedata[7:0] pwmpolarity[7:0] 1 11110000b 00000011b 11111111b 2 11110000b 00000110b 11111111b 3 11110000b 00001100b 11111111b 4 11110000b 00001010b 11111111b mnemonic: pwmpolarity address: dd h 7 6 5 4 3 2 1 0 reset polarity 7 polarity 6 polarity 5 polarity 4 polarity 3 polarity 2 polarity 1 polarity 0 ffh polarity7 : pwm polarity 7 polarity7 = 0 - pwm 7 polarity active low . polarity7 = 1 - pwm 7 polarity active high . polarity6 : pwm polarity 6 polarity 6 = 0 - pwm 6 polarity active low . polarity6 = 1 - pwm 6 polarity active high . polarity5 : pwm polarity 5 polarity5 = 0 - pwm 5 polarity active low . polarity5 = 1 - pwm 5 polarity active high . polarity4 : pwm polarity 4 polarity4 = 0 - pwm 4 polarity active low . polari ty4 = 1 - pwm 4 polarity active high . polarity3 : pwm polarity 3 polarity3 = 0 - pwm 3 polarity active low . polarity3 = 1 - pwm 3 polarity active high . polarity2 : pwm polarity 2
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 75 - polarity2 = 0 - pwm 2 polarity active low . polarity2 = 1 - pwm 2 polarity acti ve high . polarity1 : pwm polarity 1 polarity1 = 0 - pwm 1 polarity active low . polarity1 = 1 - pwm 1 polarity active high . polarity0 : pwm polarity 0 polarity0 = 0 - pwm 0 polarity active low . polarity0 = 1 - pwm 0 polarity active high . 13.2 fltconfig (fault configure) when flta or fltb are in use, if hardware detects any abnormal signals, the status of pmw will shift to inactive automatically. 13.2.1 pwm fault inputs the pwm module provides a fault function via flta and fltb output. to disable the output signals of the pwm is their main function and as well as to enter an inactive status. when the fault occurs, the hardware will performer forthwith and shift the pwm in an inactive status; and meanwhile remai n power - on connected to the pwm . under normal working statu s, either low or high active can be directed by the users by simple operations. 13.2.2 each of the fault inp uts have two modes of operation inactive mode: if the fault occurs, the output signals of the pwm are deactivated. the status of the pwm will remain in in active and correspond to flag of the fltxs flag and also set it up. if the pwm need to be recovered in a normal output working status by the time the fault flag of the fltxs status must be cleared by the software. cycle - by - cycle mode : when the fault functi on occurs, the output of the pwm is deactived. the status of the pwm pin will remain in inactive status and correspond to flag of the fltxs flag and set it up. when the fault is relieved, the fltxs will be relatively cleared, and the output of the pwm will be recovered to normal working status. mnemonic: fltconfig address: db h 7 6 5 4 3 2 1 0 reset brfen fltbs fltbmod fltben fltcon fltas fltamod fltaen 80h brfen : breakpoint fault enable brfen = 0 - disable . brfen = 1 - enable . fltbs : fault b stat us, must be cleared by sw(inactive mode) fltbs = 0 - no fault . fltbs = 1 - fltb is asserted. fltbmod : fltb mode set fltbmod = 0 - i nactive mode . fltbmod = 1 - c ycle - by - cycle mode.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 76 - fltben : fltb active set fltben = 0 - disable fault b function . fltben = 1 - enable fault b function . fltcon : 0 = i nactive pwm[5:0] . 1 = i nactive pwm[7:0] . fltas : fault a status, must be cleared by sw(inactive mode) fltas = 0 - no fault . fltas = 1 - flta is asserted. fltamod : flta m ode set fltamod = 0 - i nactive mode . fltamod = 1 - c ycle - by - cycle mode . fltaen : flta active set fltaen = 0 - disable fault a function . fltaen = 1 - enable fault a function . mnemonic: fltnf (fault noise filter) address: dch 7 6 5 4 3 2 1 0 reset - - fltbls fltals fltbnf[1:0] flt anf[1:0] 00h fltbls : fault b level select 0 - a ctive low . 1 - a ctive high . fltals: fault a level select 0 - a ctive low . 1 - a ctive high . flt b nf[1:0] : fault b noise filter 00 = fosc/1 01 = fosc/2 10 = fosc/4 11 = fosc/8 flt a nf[1:0] : fault a nois e filter 00 = fosc/1 01 = fosc/2 10 = fosc/4 11 = fosc/8
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 77 - 14. iic function the iic module uses the scl (clock) and the sda (data) line to communicate with external iic interface. its speed can be selected to 400kbps (maximum) by software setting the iicbr [2 :0] control bit. the iic module provided 2 interrupts (rxif, txif). it will generate start, repeated start and stop signals automatically in master mode and can detects start, repeated start and stop signals in slave mode. the maximum communication length and the number of devices that can be connected are limited by a maximum bus capacitance of 400pf. the interrupt vector is 6bh. mnemonic description dir. bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 rst iic function iicctl iic control register f9h i icen mss mas ab_e n bf_en iicbr[2:0] 04h iics iic status register f8h - mpif laif rxif txif rxak txak rw or bb 00h iica1 iic address 1 register fah iica1[7:1] matc h1or rw1 a0h iica2 iic address 2 register fbh iica2[7:1] matc h2 or rw2 60h iicrwd iic r ead/write register fch iicrwd[7:0] 00h iicebt iic enaable bus transaction fdh fu_en - - - - - - 00h mnemonic: iicctl address: f9h 7 6 5 4 3 2 1 0 reset iicen mss mas ab_en bf_en iicbr[2:0] 04h iicen: enable iic module iicen = 1 is enable iicen = 0 is disable. mss: master or slave mode select. mss = 1 is master mode. mss = 0 is slave mode. *the software must set this bit before setting others register. mas: master address select (master mode only) mas = 0 is to use iica1. mas = 1 is to use iica2 . ab_en: arbitration lost enable bit. (master mode only) if set ab_en bit, the hardware will check arbitration lost. once arbitration lost occurred, hardware will return to idle state. if this bit is cleared, hardware will not care arbitration lost condit ion. set this bit when multi - master and slave connection. clear this bit when single master to single slave. bf_en: bus busy enable bit. (master mode only) if set bf_en bit, hardware will not generate a start condition to bus until bf=0. clear this bit
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 78 - wi ll always generate a start condition to bus when mstart is set. set this bit when multi - master and slave connection. clear this bit when single master to single slave. iicbr[2:0]: baud rate selection (master mode only), where fosc is the external crystal or oscillator frequency. the default is fosc/512 for users? convenience. iicbr[2:0] baud rate 000 fosc/32 001 fosc/64 010 fosc/128 011 fosc/256 100 fosc/512 101 fosc/1024 110 fosc/2048 111 fosc/4096 mnemonic: iics address: f8h 7 6 5 4 3 2 1 0 reset - mpif laif rxif txif rxak txak rw or bb 00h mpif: the stop condition interrupt flag the stop condition occurred and this bit will be set. software need to clear this bit laif: arbitration lost bit. (master mode only) the arbitration interrup t flag, the bus arbitration lost occurred and this bit will be set. software need to clear this bit rxif: the data receive interrupt flag (rxif) is set after the iicrwd (iic read write data buffer) is loaded with a newly receive data. txif: the data tran smit interrupt flag (txif) is set when the data of the iicrwd (iic read write data buffer) is downloaded to the shift register. rxak: the acknowledge status indicate bit. when clear, it means an acknowledge signal has been received after the complete 8 bi ts data transmit on the bus. txak: the acknowledge status transmit bit. when received complete 8 bits data, this bit will set (noack) or clear (ack) and transmit to master to indicate the receive status. rw or bb: master mode: bb : bus busy bit if detect scl=0 or sda=0 or bus start, this bit will be set. if detect stop,this bit will be cleared. this bit can be cleared by software to return ready state. slave mode: rw: the slave mode read (received) or wrote ( transmit ) on the iic bus. when this bit is clear , the slave module received data on the iic bus (sda).(slave mode only) . as shown i n fig. 14 - 1
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 79 - fig. 14 - 1 : acknowledgement bit in the 9 th bit of a byte transmission mnemonic: iica 1 address: f a 7 6 5 4 3 2 1 0 reset iica1[7:1] match1 or rw1 a 0h r/w r or r/w slave mode: iica1[7:1]: iic address registers this is the first 7 - bit address for this slave module. it will be chec ked when an address (from master) is received match1: when iica1 matches with the received address from the master side, this bit will set to 1 by hardware. when iic bus gets first data, this bit will clear. master mode: iica1[7:1]: iic address registe rs this 7 - bit address indicates the slave with which it wants to communicate. rw1: this bit will be sent out as rw of the slave side if the module has set the mstart or rstart bit. it appears at the 8 th bit after the i ic address as below figure . it is us ed to tell the salve the direction of the following communication. if it is 1, the module is in master receive mode. if 0, the module is in master transmit mode. as shown i n fig. 14 - 2 rw1=1, master receive mode rw1=0, master tran smit mode fig. 14 - 2 : rw bit in the 8 th bit after iic address
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 80 - mnemonic: iica 2 address: f b 7 6 5 4 3 2 1 0 reset iica 2 [7:1] match 2 or rw 2 6 0h r/w r or r/w slave mode: iica2[7:1]: iic address registers this is the second 7 - bit address for this slave module. it will be checked when an address (from master) is received match2: when iica2 matches with the received address from the master side, this bit will set to 1 by hardware. when iic bus gets first data, this bit will clear. master mode: iica2[7:1]: iic address registers this 7 - bit address indicates the slave with which it wants to communicate. rw2: this bit will be sent out as rw of the sl ave side if the module has set the mstart or rstart bit. it is used to tell the salve the direction of the following communication. if it is 1, the module is in master receive mode. if 0, the module is in master transmit mode. rw2=1, master receive mode r w2=0, master transmit mode mnemonic: iicrwd address: fch 7 6 5 4 3 2 1 0 reset iicrwd[7:0] 00h iicrwd[7:0]: iic read write data buffer. in receiving (read) mode, the received byte is stored here. in transmit ting mode, the byte to be shifted out throug h sda stays here. mnemonic: iicebt address: fdh 7 6 5 4 3 2 1 0 reset f u _ en - - - - - - 00h master mode 00: reserved 01: iic bus module will enable read/write data transfer on sda and scl. 10: iic bus module generate a start condition on the sda/scl, then send out address which is stored in the iica1/iica2(selected by mas control bit) 11: iic bus module generates a stop condition on the sda/scl. fu_en[7:6] will be auto - clear by hardware, so setting fu_en[7:6] repeatedly is necessary. slave mode: 01: fu_en[7:6] should be set as 01 only. the other value is inhibited.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 81 - notice: fu_en[7:6] shoul d be set as 01 before read/write data transfer for bus release; otherwise, scl will be locked(pull low). fu_en[7:6] should be set as 01 after read/write data transfer for receiving a stop condition from bus master. in transmit data mode(slave mode), the ou tput data should be filled into iicrwd before setting fu_en[7:6] as 01. fu_en[7:6] will be auto - clear by hardware, so setting fu_en[7:6] repeatedly is necessary.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 82 - 15. spi function - serial peripheral interface serial peripheral interface (spi) is a synchrono us protocol that allows a master device to initiate communication with slave devices. the interrupt vector is 4bh. there are 4 signals used in spi, they are spi_mosi: data output in the master mode, data input in the slave mode, spi_miso: data input in t he master mode, data output in the slave mode , spi_sck: clock output from the master, the above data are synchronous to this signal . spi_ss: input in the slave mode. this slave device detects this signal to judge if it is selected by the master. as shown i n fig. 15 - 1 in the master mode, it can select the desired slave device by any io with value = 0. a s below figure is an example showing the relation of the 4 signals between master and slaves. fig. 1 5 - 1 : spi signals between master and slave devices there is only one channel spi interface. the spi sfrs are shown as below: mnemonic description dir. bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 rst spi function spic1 spi control register 1 f1h spien spims s spiss p spick p spick e spibr[2:0] 08h spic2 spi control register 2 f2h spifd tbc[2:0] spirs t rbc[2:0] 00h spis spi status register f5h spirf spiml s spiov spitxi f spitd r spirxi f spird r spirs 40h spitxd spi transmit data buffer f3h spitxd[7:0] 00h spirxd spi receive data buffer f4h spirxd[7:0] 00h master mosi miso clk io io slave 1 mosi miso clk ss slave 2 mosi miso clk ss
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 83 - mnemonic:spic1 address:f1h 7 6 5 4 3 2 1 0 reset spien spimss spissp spickp spicke spibr[2:0] 08h spien: enable spi module. spien = 1 - is enable. spien = 0 - is disable. spimss: master or slave mode select spimss = 1 - is master mode. spimss = 0 - is slave mode. spissp: ss or cs active polarity.(slave mode used only) spissp = 1 - high active. spissp = 0 - low active. spickp: clock idle polarity select. spickp = 1 - sck will idle high. ex : spickp = 0 - sck will idle low. ex : spicke: clock sample edge select. spicke = 1 - rising edge latch data. spicke = 0 - falling edge latch data. * to ensure the data latch stability, sm 39a16m1 generate the output data as shown in the following example, the other side can latch the stable data no matter in rising or falling edge. sufficient set - up time sufficient hold time
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 84 - spibr[2:0]: spi baud rate select. (master mode used only) spibr[2:0] baud rate 0:0:0 fosc/4 0:0:1 fosc /8 0:1:0 fosc /16 0:1:1 fo sc /32 1:0:0 fosc /64 1:0:1 fosc /128 1:1:0 fosc /256 1:1:1 fosc /512 mnemonic: spic2 address: f2h 7 6 5 4 3 2 1 0 reset spifd tbc[2:0] spirst rbc[2:0] 00h spifd: full - duplex mode enable. spifd = 1 is enable full - duplex mode. spifd = 0 is dis able full - duplex mode. when it is set, the tbc[2:0] and rbc[2:0] will be reset and keep to zero. when the master device transmit s data to the slave device via the mosi line, the slave device responds by sending data to the master device via the miso line. this implies full - duplex transmission with both data out and data in synchronized with the same clock. a s shown in fig 15 - 2. input shift register spirxd output shift register spitxd clock generator output shift register spitxd syncmos master input shift register spirxd syncmos slave miso mosi sck miso mosi sck fig. 15 - 2 : spi mater and slave transfer method
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 85 - s pirst: spi re - start (slave mode used only) spirst = 0 - re - start function disable.spi transmit /receive data when ss active. in spitxd/spirxd buffer, data got from previous ss active period will not be removed (i.e. it's valid). spirst = 1 - re - start functi on enable.spi transmit /receive new data when ss re - active; in spitxd/spirxd buffer, data got from previous ss active period will be removed (i.e. it's invalid). t bc[2:0]: spi transmit ter bit counter. t bc[2:0] bit counter 0:0:0 8 bits output 0:0:1 1 bit o utput 0:1:0 2 bits output 0:1:1 3 bits output 1:0:0 4 bits output 1:0:1 5 bits output 1:1:0 6 bits output 1:1:1 7 bits output rbc[2:0]: spi receiver bit counter. rbc[2:0] bit counter 0:0:0 8 bits input 0:0:1 1 bit input 0:1:0 2 bits input 0:1: 1 3 bits input 1:0:0 4 bits input 1:0:1 5 bits input 1:1:0 6 bits input 1:1:1 7 bits input mnemonic: spis address:f5h 7 6 5 4 3 2 1 0 reset spirf spimls spiov spitxif spitdr spirxif spirdr spirs 40h spirf: spi ss pin release flag. this bit is set when ss pin release & spirst as ?1?. spimls: msb or lsb first output /input select. spimls = 1 is msb first output/input. spimls = 0 is lsb first output/input. spiov: overflow flag. when spirdr is set and next data already into shift register, this flag will be set. it is clear by hardware, when spirdr is cleared. spitxif: transmit interrupt flag. this bit is set when the data of the spitxd register is downloaded to the shift register. spitdr: transmit data ready. when mcu finish writing data to sp itxd register, the mcu needs to set this bit to ?1? to inform the spi module to send the data. after spi module finishes sending the data from spitxd, this bit will be cleared automatically. spirxif: receive interrupt flag.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 86 - this bit is set after the spirx d is loaded with a newly receive data. spirdr: receive data ready. the mcu must clear this bit after it gets the data from spirxd register. the spi module is able to write new data into spirxd only when this bit is cleared. spirs: receive start. this bit set to ?1? to inform the spi module to receive the data into spirxd register. mnemonic: spitxd address: f3h 7 6 5 4 3 2 1 0 reset spitxd[7:0] 00h spitxd[7:0]: transmit data buffer. mnemonic: spirxd address: f4h 7 6 5 4 3 2 1 0 reset spirxd[7:0 ] 00h spirxd[7:0]: receive data buffer. p.s. miso pin must be float when ss or cs no - active in slave mode.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 87 - 16. lvi & lvr ? low voltage interrupt and low voltage reset the interrupt vector 63h mnemonic description dir. bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 rst watchdog timer rsts reset status register a1h - lvrlp intf lvrlp f pdrf wdtf swrf lvrf porf 00h lvc low voltage control register e6h lvi_e n lvrlpe lvre lv if lvrlp inte - lvis[1:0] 20h mnemonic: rsts address: a1h 7 6 5 4 3 2 1 0 rese t - lvrlp intf lvrlpf pdrf wdtf swrf lvrf porf 00h lvrlpintf : ? internal ? low voltage reset flag. when mcu is reset by lvr_lp_int , lvrlpintf flag will be set to one by hardware. this flag clear by software . lvrlpf : ? external ? low voltage reset flag. whe n mcu is reset by lvr(external low power ) , lvrlpf flag will be set to one by hardware. this flag clear by software . pdrf: pad reset flag. when mcu is reset by reset pad , pdr f flag will be set to one by hardware. this flag clear by software. lvrf: low vol tage reset flag. when mcu is reset by lvr , lvrf flag will be set to one by hardware. this flag clear by software . porf: power on reset flag. when mcu is reset by por , porf flag will be set to one by hardware. this flag clear by software . mnemonic: lvc a ddress: e6h 7 6 5 4 3 2 1 0 reset lvi_en lvr lpe lvre lvif lvrlp inte - lvis [1:0] 20h lvi_en: low voltage interrupt function enable bit. lvi_en = 0 - disable low voltage detect function. lvi_en = 1 - enable low voltage detect function. lvrlpe : extern al low voltage reset function (low power) enable bit. lvr lp e = 0 - enable external low voltage reset (low power) function. lvr lp e = 1 - disable external low voltage reset (low power) function. lvre: external low voltage reset function enable bit. lvrxe = 0 - disable external low voltage reset function.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 88 - lvrxe = 1 - enable external low voltage reset function. note: lvr = 1. 50 v lvif: low voltage interrupt flag (i.e., low v oltage interrupt status flag) lvrlpinte: lvr_lp_int( ? in ternal? low voltage reset ) funct ion enable bit. lvr lpint e = 0 - disable in ternal low voltage reset function. lvr lpint e = 1 - enable in ternal low voltage reset function. lvis [1:0] : lvi level select: 00: 1.65v 01: 2.60v 10: 3.20v 11: 4.00v
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 89 - 17. 10- bit analog - to - digital converter (adc) the sm39 a16m1 provides 8 channels 10 - bit adc. the digital output data [ 9:0] were put into adcd [9:0]. the adc the block diagram show in fig. 17 - 1 the adc interrupt vector is 53h. mux high speed 10 bits adc module adcc1[7:0] avss avdd adc0 adc7 ? adc6 adc clock divider ? adcch[2:0] adccs[4:0] fosc start vdd vss ? ? adcd[9:0] adc_isr fig. 17 - 1 : adc analog to digital converter operation set the adc sfr show as below: mnemonic description dir. bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 rst adc adcc1 adc control register 1 abh adc7 en adc6 en adc5 en adc4 en ad c3 en adc2 en adc1 en adc0 en 00h adcc2 adc control register 2 ach start adju st pwmt rigger en ext trigger en adcm ode adcch[2:0] 0 8 h adcdh adc data high byte adh adcdh [7:0] 00h adcdl adc data low byte aeh adcdl [7:0] 00h adccs adc clock select afh - - - adccs[4:0] 00h mnemonic: adcc1 address: abh 7 6 5 4 3 2 1 0 reset adc7en adc6en adc5en adc4en adc3en adc2en adc1en adc0en 00h adc7en: adc channels 7 enable. adc7en = 1 - enable adc channel 7 adc6en: adc channels 6 enable.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 90 - adc6en = 1 - enable adc cha nnel 6 adc5en: adc channels 5 enable. adc5en = 1 - enable adc channel 5 adc4en: adc channels 4 enable. adc4en = 1 - enable adc channel 4 adc3en: adc channels 3 enable. adc3en = 1 - enable adc channel 3 adc2en: adc channels 2 enable. adc2en = 1 - enable adc channel 2 adc1en: adc channels 1 enable. adc1en = 1 - enable adc channel 1 adc0en: adc channels 0 enable. adc0en = 1 - enable adc channel 0 mnemonic: adcc2 address: ach 7 6 5 4 3 2 1 0 reset start adjust - exttrigg eren adcmo de adcch[2:0] 0 8 h star t : when this bit is set, the adc will be start conversion. (sw trigger conversion) adjust : adjust the format of adc conversion data. adjust = 0 - (default value) adc data high byte adcd [9:2] = adcdh [7:0]. adc data low byte adcd [1:0] = adcdl [1 :0]. adjust = 1 - adc data high byte adcd [9:8] = adcdh [1:0]. adc data low byte adcd [7:0] = adcdl [7:0]. exttriggeren : external pin trigger adc to start conversion. (hw external trigger conversion) 0 = disable . 1 = enable . adcmod e: 0 = continuous mo de. 1 = single - shot mode .
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 91 - adcch[2:0] adc channel select. adcch [2:0] channel 000 0 001 1 010 2 011 3 100 4 101 5 110 6 111 7 adjust = 0: mnemonic: adcdh address: adh 7 6 5 4 3 2 1 0 reset adcd[9] adcd[8] adcd[7] adcd[6] adcd[5] adcd[4] adcd[3] adcd[2] 00h mnemonic: adcdl address: aeh 7 6 5 4 3 2 1 0 reset - - - - - - adcd[1] adcd[0] 00h adjust = 1: mnemonic: adcdh address: adh 7 6 5 4 3 2 1 0 reset - - - - - - adcd[9] adcd[8] 00h mnemonic: adcdl address: aeh 7 6 5 4 3 2 1 0 r eset adcd[7] adcd[6] adcd[5] adcd[4] adcd[3] adcd[2] adcd[1] adcd[0] 00h adcd[9:0]: adc data register. mnemonic: adccs address: afh 7 6 5 4 3 2 1 0 reset - - - adccs[4] adccs[3] adccs[2] adccs[1] adccs[0] 00h adccs[4:0]: adc clock select. *the ad c clock maximum 12.5mhz. *the adc conversion rate maximum 961 khz. adccs[4:0] adc clock(hz) clocks for adc conversion 00000 fosc /2 26 00001 fosc /4 52 00010 fosc /6 78 00011 fosc /8 104 00100 fosc /10 130 00101 fosc /12 156 00110 fosc /14 182 0011 1 fosc /16 208 01000 fosc /18 234 01001 fosc /20 260
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 92 - 01010 fosc /22 286 01011 fosc /24 312 01100 fosc /26 338 01101 fosc /28 364 01110 fosc /30 390 01111 fosc /32 416 10000 fosc /34 442 10001 fosc /36 468 10010 fosc /38 494 10011 fosc /40 520 10100 fosc /42 546 10101 fosc /44 572 10110 fosc /46 598 10111 fosc /48 624 11000 fosc /50 650 11001 fosc /52 676 11010 fosc /54 702 11011 fosc /56 728 11100 fosc /58 754 11101 fosc /60 780 11110 fosc /62 806 11111 fosc /64 832 ) 1 ( 2 fosc _ + = adccs clock adc 13 adc_clock _ _ = rate conversion adc
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 93 - 18. in - system programming (internal isp) the sm39 a16m1 can generate flash control signal by internal hardware circuit. users utilize flash control register, flash address register and flash data register to perform the isp function without removing the sm 39a16m1 from the system. the sm 39a16m1 provides internal flash control signals which can do flash program/chip erase/page erase/protect functions. user need to design and use any kind of interface which sm 39a16m1 can input d ata. user then utilize isp service program to perform the flash program/chip erase/page erase/protect functions. 18.1 isp service program the isp service program is a user developed firmware program which resides in the isp service program space. after user de veloped the isp service program, user then determine the size of the isp service program. user need to program the isp service program in the sm 39a16m1 for the isp purpose. the isp service programs were developed by user so that it should includes any feat ures which relates to the flash memory programming function as well as communication protocol between sm 39a16m1 and host device which output data to the sm 39a16m1 . for example, if user utilize uart interface to receive/ transmit data between sm 39a16m1 and h ost device, the isp service program should include baud rate, checksum or parity check or any error - checking mechanism to avoid data tra nsmission er ror. the isp service program can be initiated under sm 39a16m1 active or idle mode. it can not be initiated u nder power down mode. 18.2 lock bit (n) the lock bit n has two functions: one is for service program size configuration and the other is to lock the isp service program space from flash erase function. the isp service program space address range $3c00 to $3fff. it can be divided as blocks of n*128 byte. (n=0 to 8). when n=0 means no isp function, all of 16 k byte flash memory can be used as program memory. when n=1 means isp service program occupies 128 byte while the rest of 15.875k byte flash memory can be used as program memory. the maximum isp service program allowed is 1k byte when n= 8 . under such configuration, the usable program memory space is 15k byte. after n determined, sm 39a16m1 will reserve the isp service program space downward from the top of the pr ogram address $3fff. please see section 3.1 program memory diagram for this isp service program space structure. the lock bit n function is different from the flash protect function. the flash erase function can erase all of the flash memory except for the locked isp service program space. if the flash not has been protected, the content of isp service program still can be read. if the flash has been protected, the overall content of flash program memory space including isp service program space can not be read. as given in table 18- 1 .
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 94 - table 18- 1 isp code area isp service program address 0 no isp service program 1 128 bytes ($3f80h ~ $3fffh) 2 256 bytes ($3f00h ~ $3fffh) 3 384 by tes ($3e80h ~ $3fffh) 4 512 bytes ($3e00h ~ $3fffh) 5 640 bytes ($3d80h ~ $3fffh) 6 768 bytes ($3d00h ~ $3fffh) 7 896 bytes ($3c80h ~ $3fffh) 8 1.0 k bytes ($3c00h ~ $3fffh) isp service program configurable in n* 128 byte (n= 0 ~ 8) 18.3 program the isp s ervice program after lock bit n is set and isp service program been programmed, the isp service program memory will be protected (locked) automatically. the lock bit n has its own program/erase timing. it is different from the flash memory program/erase ti ming so the locked isp service program can not be erased by flash erase function. if user needs to erase the locked isp service program, he can do it by writer only. user can not change isp service program when sm 39a16m1 was in system. 18.4 initiate isp service program to initiate the isp service program is to load the program counter (pc) with start address of isp service program and execute it. there are four ways to do so: (1) blank reset. hardware reset with first flash address blank ($0000=#ffh) will load the pc with start address of isp service program. the hardware reset includes max810 (power on reset) and external pad reset. the hardware will issue a strobe window about 256us after hardware reset. (2) execute jump instruction can load the start address of the isp service program to pc. (3) enter?s isp service program by hardware setting. user can force sm 39a16m1 enter isp service program by setting p1.2, p1.3 ?active low? or p1.4 ? active low? during hardware reset period. the hardware reset includes max810 (power on reset) and external pad reset. the hardware will issue after hardware reset. in application system design, user should take care of the setting of p1. 2,p1.3 or p1.4 at reset period to prevent sm 39a16m1 from entering isp service program. (4) enter?s isp s ervice program by hardware setting, the p 3 . 0 (rxd) will be detected the two clock signals during hardware reset period. the hardware reset includes max810 (power on reset) and external pad reset. the hardware will issue to detect 2 clock signals after hardw are reset. during the strobe window, the hardware will detect the status of p1 .2, p1.3 (or p1.4) /p1. 0 . if they meet one of above conditions, chip will switch to isp mode automatically. after isp service program executed, user need to reset the sm 39a16m1 , e ither by hardware reset or by wdt, or jump to the address $0000 to re - start the firmware program.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 95 - there are 6 kinds of entry mechanisms for user different applications. this entry method will select on the writer or isp. (1) first address blank. i.e. $0000 = 0xff. and triggered by internal reset signal. ( entry mechanism 1 ) (2) first address blank. i.e. $0000 = 0xff. and triggered by pad reset signal. ( entry mechanism 1 ) (3) p1. 2 = 0 & p1.3 = 0. and triggered by internal reset signal. ( entry mechanism 2 ) (4) p1. 2 = 0 & p1.3 = 0. and triggered by pad reset signal. ( entry mechanism 2 ) (5) p1.4 = 0. and triggered by internal reset signal. ( entry mechanism 3 ) (6) p1.4 = 0. and triggered by pad reset signal. ( entry mechanism 3 ) (7) p 3 . 0 input 2 clocks. and triggered by internal reset signal. ( entry mechanism 4 ) (8) p 3 . 0 input 2 clocks. and triggered by pad reset signal. ( entry mechanism 4 ) 18.5 isp register ? takey, ifcon, ispfah, ispfal, ispfd and ispfc mnemonic description dir. bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 rst isp function takey time access key register f7h takey [7:0] 00h ifcon interface control register 8fh - cdpr - - - - - ispe 00h ispfah isp flash address ? high register e1h ispfah [7:0] ffh ispfal isp flash address - low register e2h ispfal [7:0] ffh ispfd isp flash data register e3h ispfd [7:0] ffh ispfc isp flash control register e4h emf1 emf2 emf3 emf4 - ispf.2 ispf.1 ispf.0 00h mnemonic: takey address: f7h 7 6 5 4 3 2 1 0 reset takey [7:0] 00h isp enable bit (ispe) is read - only by defa ult, software must write three specific values 55h, aah and 5ah sequentially to the takey register to enable the ispe bit write attribute. that is: mov takey, #55h mov takey, #0aah mov takey, #5ah mnemonic: ifcon address: 8fh 7 6 5 4 3 2 1 0 reset - cdp r - - - - - ispe 00h the bit 0 (ispe) of ifcon is isp enable bit. user can enable overall sm 39a16m1 isp function by setting ispe bit to 1, to disable overall isp function by set ispe to 0. the function of ispe behaves like a security key. user can disabl e overall isp function to prevent software program be erased accidentally. isp registers ispfah, ispfal, ispfd and ispfc are read - only by default. software must be set ispe bit to 1 to enable these 4 registers write attribute.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 96 - mnemonic: ispfah address: e 1h 7 6 5 4 3 2 1 0 reset ispfah 7 ispfah 6 ispfah5 ispfah4 ispfah3 ispfah2 ispfah1 ispfah0 ffh ispfah [ 7 :0]: flash address - high for isp function mnemonic: ispfal address: e2h 7 6 5 4 3 2 1 0 reset ispfal7 ispfal6 ispfal5 ispfal4 ispfal3 ispfal2 ispfa l1 ispfal0 ffh ispfal [7:0]: flash address - low for isp function the ispfah & ispfal provide the 1 6 - bit flash memory address for isp function. the flash memory address should not include the isp service program space address. if the flash memory address indicated by ispfah & ispfal registers overlay with the isp service program space address, the flash program/page erase of isp function executed thereafter will have no effect. mnemonic: ispfd address: e3h 7 6 5 4 3 2 1 0 reset ispfd7 ispfd6 ispfd5 isp fd4 ispfd3 ispfd2 ispfd1 ispfd0 ffh ispfd [7:0]: flash data for isp function. the ispfd provide the 8 - bit data register for isp function. mnemonic: ispfc address: e4h 7 6 5 4 3 2 1 0 reset emf1 emf 2 emf3 emf4 - ispf[2] ispf[1] ispf[0] 00h emf1: en try mechanism (1) flag, clear by reset. (read only) emf 2 : entry mechanism ( 2 ) flag, clear by reset. (read only) emf3: entry mechanism (3) flag, clear by reset. (read only) emf4: entry mechanism (4) flag, clear by reset. (read only) ispf [2:0]: isp func tion select bit. ispf[2:0] isp function 000 byte program 001 chip protect 010 page erase 011 chip erase 100 write option 101 read option 110 erase option 111 reserved one page of flash memory is 128byte the option function can access the xtal1 and xtal2 swap to i/o pins select(description in section 1.2) internal reset time select(description in section
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 97 - 1.4.1) clock source select(description in section 1.5) reset swap to i/o pins function select(description in section 5) wdten control bit(description in section 10) or isp entry mechanisms sel ect(description in section 18). when chip protected or no isp service, option can only read. the choice isp function will start to execute once the software write data to ispfc register. to perform byte program/page erases isp function, user need to spe cify flash address at first. when performing page erase function, sm 39a16m1 will erase entire page which flash address indicated by ispfah & ispfal registers located within the page. e.g. flash address: $ xy 00 page erase function will erase from $xy00 to $ xy 7 f to perform the chip erase isp function, sm 39a16m1 will erase all the flash program memory except the isp service program space. to perform chip protect isp function, the sm 39a16m1 flash memory content will be read #00h. e.g. isp service program to do the byte program - to program #22h to the address $1005h mov takey, #55h mov takey, #0aah mov takey, #5ah ; enable ispe write attribute orl ifcon, #01h ; enable sm 39a16m1 isp function mov ispfah, #10h ; set flash address - high, 10h mov ispfa l, #05h ; set flash address - low, 05h mov ispfd, #22h ; set flash data to be programmed, data = 22h mov ispfc, #00h ; start to program #22h to the flash address $1005h mov takey, #55h mov takey, #0aah mov takey, #5ah ; enable ispe write attribute anl ifcon, #0feh ; disable sm 39a16m1 isp function
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 98 - 19. comparator sm39 a16m1 had integrated comparator in chip. when use it as comparator, the comparator output is logical one when positive input greater than negative input, otherwise the outpu t is a zero. following is the work of a block diagram of the comparator , as fig. 19 - 1 shown. t he user can set the operation mode with reference to the block diagram . cmp0 cmp1 cmp2 level shifter level shifter level shifter + - + - + - vref 1.2v p2.0 p2.1 p2.2 p2.3 p2.4 p2.5 sfr(c0pospad) sfr(c1pospad) sfr(c2pospad) sfr(cmp0_en) sfr(cmp1_en) sfr(cmp2_en) sfr(c0posvbg) sfr(c1posvbg) sfr(c2posvbg) sfr(hys0_en ) sfr(hys1_en ) sfr(hys2_en) sfr(cmp0o) sfr(cmp1o) sfr(cmp2o) sfr(cmf0ms) sfr(cmf1ms) sfr(cmf2ms) sfr(cmf0) sfr(cmf1) sfr(cmf2) sfr(ecmpi) cmp int to int circuirt fig. 19 - 1 : operation of comparator mode if opa and comparator mode both are enabled at same module, the opa mode has higher priority. mnemonic description addr bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 rst comparator oppin opcmp pin select f6h - cmp0_ en c0pos vbg c0pos pad - cmp1_ en c1pos vbg c1pos pad ~op11 oppin2 opcmp pin select 2 ceh - cmp2_ en c2pos vbg c2pos pad - - - - ~op16 cmp0con comparator _0 control feh hys0en cmp0o cmf0 ms1 cmf0 ms0 cmf0 - - - 00h cmp1con comparator _1 con trol ffh hys1en cmp1o cmf1 ms1 cmf1 ms0 cmf1 - - - 00h cmp2con comparator _2 control cfh hys2en cmp2o cmf2 ms1 cmf2 ms0 cmf2 - - - 00h *op11 and op16 by writer programming set.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 99 - mnemonic: oppin address: f6h 7 6 5 4 3 2 1 0 reset - cmp0_en c0posvb g c0p ospad - cmp1_en c1posvb g c1pospad ~op11 cmp0_en : cmp0 enable cmp0_en = 1 - comparator_0 circuit enables and switch to corresponding signal in m ulti - function pin p 2 . 0 /p 2.1 by hw automatically. c0posvbg : select comparator_0 positive input source cmp0_e n = 1 - set positive input source as internal reference voltage . (1.2 v10%) c0pospad: select comparator_0 positive input source c0pospad = 1 - set positive input source as external pin . cmp1_en : cmp1 enable cmp1_en = 1 - comparator_1 circuit enables and switch to corresponding signal in multi - function pin p 2 . 2 /p 2 . 3 by hw automatically. c1posvbg: select comparator_1 positive input source c1posvbg = 1 - set positive input source as internal reference voltage. (1.2 v10%) c1pospad: select comparator_1 p ositive input source c1pospad = 1 - set positive input source as external pin . mnemonic: oppin2 address:ceh 7 6 5 4 3 2 1 0 reset - cmp2_ en c2pos vbg c2pos pad - - - - ~op16 cmp2_en : cmp2 enable. cmp2_en = 1 - comparator_2 circuit enable and s witch to corresponding signal in multi - function pin p2.4/p2.5 by hw automatically. c2posvbg: s elect comparator_2 positive input source c2posvbg = 1 - set positive input source as bandgap reference voltage . c2pospad: s elect com parator_2 positive input sou rce c2pospad =1 - set positive input source as external pin .
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 100 - mnemonic: cmp0con address:feh 7 6 5 4 3 2 1 0 reset hys0en cmp0o cmf0m s1 cmf0m s0 cmf0 - - - 00h hys0en: hysteresis function enable hys0en = 0 - d isable h ysteresis at comparator_0 in put. hys0en = 1 - e nable . cmp0o: comparator_0 output (read only) cmp0o = 0 - the positive input source was lower than negative input source . cmp0o = 1 - the positive input source was higher than negative input source . cmf0ms[1:0] : cmf0(comparator_0 fla g) setting mode select cmf0ms[1:0] = 00 - cmf0 will be set when comprator_0 output toggle . cmf0ms[1:0] = 01 - cmf0 will be set when comprator_0 output rising . cmf0ms[1:0] = 10 - cmf0 will be set when comprator_0 output falling . 11: reserved . cmf0: compar ator_0 flag this bit is setting by hardware according to meet cmf0ms [1:0] select condition. this bit must clear by software. mnemonic: cmp1con address:ffh 7 6 5 4 3 2 1 0 reset hys1en cmp1o cmf1m s1 cmf1m s0 cmf1 - - - 00h hys1en: hysteresis functio n enable hys1en = 0 - disable h ysteresis at comparator_1 input. hys1en = 1 - enable . cmp1o: comparator_1 output (read only) cmp1o = 0 - the positive input source was lower than negative input source . cmp1o = 1 - the positive input source was higher than negative input source . cmf1ms[1:0] : cmf1(comparator_1 flag) setting mode select cmf1ms[1:0] = 00 - cmf1 will be set when comprator_1 output toggle . cmf1ms[1:0] = 01 - cmf1 will be set when comprator_1 output rising . cmf1ms[1:0] = 10 - cmf1 will be set when comprator_1 output falling . cmf1ms[1:0] = 11 - reserved . cmf1: comparator_1 flag this bit is setting by hardware according to meet cmf1ms [1:0] select condition. this bit must clear by software.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 101 - mnemonic: cmp 2 con address: c fh 7 6 5 4 3 2 1 0 reset hys 2 en cmp 2 o cmf2 ms1 cmf2 ms0 cmf2 - - - 00h hys 2 en: hysteresis function enable hys 2 en = 0 - d i sable hysteresis at comparator_ 2 input. hys 2 en = 1 - e nable . cmp 2 o: comparator_1 output (read only) cmp 2 o = 0 - the positive input source was lower t han negative input source . cmp 2 o = 1 - the positive input source was higher than negative input source . cmf 2 ms[1:0] : cmf1(comparator_ 2 flag) setting mode select cmf 2 ms[1:0] = 00 ? cmf 2 will be set when comprator_ 2 output toggle . cmf 2 ms[1:0] = 01 ? cmf2 w ill be set when comprator_ 2 output rising . cmf 2 ms[1:0] = 10 ? cmf 2 will be set when comprator_ 2 output falling . cmf 2 ms[1:0] = 11 ? reserved . cmf 2 : comp arator_ 2 flag this bit is setting by hardware according to meet cmf 2 ms [1:0] select condition. this bit must clear by software.
sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 102 - operating conditions symbol description min. typ. max. unit. remarks ta operating temperature - 40 25 85 ambient temperature under bias vdd supply voltage 1.8 5.5 v vref internal reference voltage 1.1 1.2 1. 3 v dc characteristics ta = - 40 to 85 , vcc = 5.0v symbol parameter valid min typical max units conditions vil1 input low - voltage port 0,1, 2,3 - 0.5 - 0.8 v vcc=5v vil2 input low - voltage res, xtal1 0 - 0.8 v - vih1 input high - voltage port 0,1,2,3 2.0 - vcc + 0.5 v - vih2 input high - voltage res, xtal1 70%vcc - vcc + 0.5 v - vol output low - voltage port 0 (3.) - - 0.4 5 v iol= 40 ma vcc=5v port 1,2,3 (4.) - - 0.4 5 v iol= 20 ma vcc=5v voh1 output high - voltage using strong pull - up(1) port 0 4.6 - - v ioh= - 12ma port 1,2,3 4.6 - - v ioh= - 7 ma voh2 output high - voltage using weak pull - up(2) port 0 , 1,2,3 2. 6 - - v ioh= - 350 ua iil logic 0 input current port 0,1,2,3 - - - 75 ua vin= 0.45v itl logical transition current port 0,1,2,3 - - - 650 ua vin= 2.0v ili input leakage current port 0,1,2,3 - - 10 ua 0.45v sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 103 - ta = - 40 to 85 , vcc = 3.0v symbol parameter valid min typical max units conditions vil1 input low - voltage p ort 0,1,2,3 - 0.5 - 0.8 v vcc=3.0v vil2 input low - voltage res, xtal1 0 - 0.8 v - vih1 input high - voltage port 0,1,2,3 2.0 - vcc + 0.5 v - vih2 input high - voltage res, xtal1 70%vcc - vcc + 0.5 v - vol output low - voltage port 0 (3.) - - 0.45 v iol=20ma vcc=3v port 1,2,3 (4.) - - 0.45 v iol=12ma vcc=3v voh1 output high - voltage using strong pull - up(1) port 0 2.6 - - v ioh= - 9ma port 1,2,3 2.6 - - v ioh= - 5ma voh2 output high - voltage using weak pull - up(2) port 0,1,2,3 2.4 - - v ioh= - 70ua iil logic 0 input current port 0,1,2,3 - - - 75 ua vin= 0.45v itl logical transitio n current port 0,1,2,3 - - - 650 ua vin=1.5v ili input leakage current port 0,1,2,3 - - 10 ua 0.45v sm 39 a16m1 8 - bit micro - controller 1 6 kb with isp flash & 1k+256 b ram embedded specifications subject to change without notice contact your sales representatives f or the most recent information . i ssfd - m 069 ver e SM39A16M1 0 4 / 20 /2015 - 104 - comparator characteristics ta=25 symbol description test condition min tpy max unit v dd condition i op operating current 5 - - 10 10 ua - power down current 5 - - - 0.1 ua - offset voltage 5 - - 10 - +10 mv v cm input voltage commom mode range - - vss - vdd - 1.5 v tp propagation delay 5 vin=10mv - 3 6 us lvi& lvr characteristics lvr min typical max 1.8v ~ 5.5v vil=1.4 2v (vih=1.62v) vil=1.50v (vih=1.70v) vil=1.57v (vih=1.77v) lvi min typical max lvis[1:0] = 00 vil=1.57v (vih=1.77v) vil=1.65v (vih=1.85v) vil=1.73v (vih=1.93v) lvis[1:0] = 01 vil=2.47v (vih=2.67v) vil=2.60v (vih=2.80v) vil=2.73v (vih=2.93v) l vis[1:0] = 10 vil=3.04v (vih=3.24v) vil=3.20v (vih=3.40v) vil=3.36v (vih=3.56v) lvis[1:0] = 11 vil=3.80v (vih=4.00v) vil=4.00v (vih=4.20v) vil=4.20v (vih=4.40v)

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