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1 * this specification are subject to be changed without notice. em83053a/bh keyboard encoder 6.9.2000 general description the em83053a/bh microcontroller is dedicated to a keyboard encoder ,specially designed for ibm pc at and all compatible machines. the em83053a/bh controll all scan codes, three leds status, scan timing and communications between the keyboard and pc. it is easy to implement a high performance, low cost keyboard with the minimal external components. features ? low cost - eliminate need external components. ? phantom key detects. ? rc oscillator ( 1.8432mhz ). ? support scan code set 1 ,2 and 3. ? support pc at and ps/2 keyboard . ? low power cmos device technology. ? internal pull-up resistor. ? tri-state outputs for easy board application. ? built-in 4k rom. ? support windows tm 95, 98, 2000 keys. ? 104/107 keys with multi-media or other special application keyboard encoder. ? windows is registered trademarks of microsoft corperation. application ? ibm pc at or compatible machine keyboard. ? ibm ps/2 model 30,50,60,80 or compatible machine keyboard. ? japanese keyboard. ? korean keyboard. ? brazilian keyboard. ? european keyboard. pin assignments p91 p92 p93 p94 p95 p50 p51 p52 p53 p54 6 7 8 9 10 11 12 13 14 15 36 35 34 33 32 31 30 29 28 27 r_osci vdd caps p55 p56 p57 p80 p81 p82 p83 p84 p85 p86 p87 16 17 18 19 20 21 22 23 24 25 26 5 4 3 2 1 39 38 37 num scroll p67 p66 p65 p64 p63 p62 p61 p60 em83053bh p90 clk data osco gnd p91 p92 p93 xt p95 p50 p51 p52 p53 p54 6 7 8 9 10 11 12 13 14 15 36 35 34 33 32 31 30 29 28 27 r_osci vdd vdd caps p55 p56 p57 p80 p81 p82 p83 p84 p85 p86 p87 16 17 18 19 20 21 22 23 24 25 26 5 4 3 2 1 40 39 38 37 num scroll p67 p66 p65 p64 p63 p62 p61 p60 EM83053AH p90 clk data osco gnd
* this specification are subject to be changed without notice. 2 6.9.2000 em83053a/bh keyboard encoder pin descriptions symbol i/o function p50 o column 3 low output scan line, 3-state p51 o column 4 low output scan line, 3-state p52 o column 5 low output scan line, 3-state p53 o column 6 low output scan line, 3-state p54 o column 7 low output scan line, 3-state p55 o column 14 low output scan line, 3-state p56 o column 13 low output scan line, 3-state p57 o column 12 low output scan line, 3-state p80 o column 11 low output scan line, 3-state p81 o column 15 low output scan line, 3-state p82 o column 10 low output scan line, 3-state p83 o column 8 low output scan line, 3-state p84 o column 9 low output scan line, 3-state p85 o column 0 low output scan line, 3-state p86 o column 16 low output scan line, 3-state p87 o column 17 low output scan line, 3-state p90 o column 1 low output scan line, 3-state p91 o column 2 low output scan line, 3-state vss i ground scroll o scroll lock indicator num o num lock indicator caps o caps lock indicator p60 i row 0 input scan line, internal pull high ( 17k w ) p61 i row 1 input scan line, internal pull high ( 17k w ) p62 i row 2 input scan line, internal pull high ( 17k w ) p63 i row 3 input scan line, internal pull high ( 17k w ) p64 i row 4 input scan line, internal pull high ( 17k w ) p65 i row 5 input scan line, internal pull high ( 17k w ) p66 i row 6 input scan line, internal pull high ( 17k w ) p67 i row 7 input scan line, internal pull high ( 17k w ) clk i/o clock line for ibm communication , internal pull high ( 2.2k w ) data i/o data line for ibm communication , internal pull high ( 2.2k w ) v dd i +5v power supply osco o clock output r_osci i connect 51k ohm resistor for 1.8432 mhz oscillation
3 * this specification are subject to be changed without notice. em83053a/bh keyboard encoder 6.9.2000 function descriptions keyboard buffer the keyboard will buffer 16 bytes in a first-in-first-out order when the system is able to receive scan codes from the keyboard. the response codes and repeated codes will not be buffered. if keystrokes generate a multiple-byte sequence, the entire sequence must fit into the buffer or the keystroke is discarded and a buffer- overrun condition occurs. power-on reset and self test the duration of the keyboard power-on-reset(por) should be within 150 milliseconds and 2 seconds after the power is applied to the keyboard. after executing por , the keyboard executes a self test. the leds are turned on at the beginning and off at the end of the self test. the self test takes a minimum 300 milliseconds and a maximum 500 milliseconds. if the self test is successful, a completion code aa hex is sent to the system and the keyboard starts scanning. if the self test fails, and error code is sent, the keyboard is disabled and waits for a command from the system. the completion codes are sent between 450 milliseconds and 2.5 seconds after por, and between 300 and 500 milliseconds after a reset command is acknowledged. keyboard data output when the keyboard is ready to send data to the system, it first checks clock and data lines. if either one is in the low state, data is stored in the keyboard buffer. if both are in the high state, keyboard starts clocking data out. data will be valid before the trailing edge and after the leading edge of the clock pulse. during the transmission the keyboard checks the clock line at least every 60 microseconds . if the system lowers the clock lines before the leading edge of the 10th clock, the keyboard should stop sending, then buffer the data and return clock and data lines to high state. keyboard data input when the system is ready to send data to the keyboard, it first checks clock line to see if keyboard is sending data. if keyboard is not sending data or it is sending data but has not reached the 10th clock, the system can inhibit the interface by forcing the clock line low for more than 60 microseconds and prepares to send data. the keyboard checks clock line status at least every 5 milliseconds. if a system request to send(rts) is detected, the keyboard clocks 11 bits in. after the 10th bit, the keyboard checks for a high state in data line then pulls it low and clocks one more bit to signal the system that data has been received. if data is low after the 10th bit, it indicates a frame error. the keyboard should continue to count until data line goes high, then pulls it low and issues a resend to the system. command from the system the system can send commands to the keyboard at any time. the keyboard needs to respond within 20 milliseconds, unless the system prevents keyboard output, when doing self test or executing a reset. the following are the keyboard input commands and the actions that keyboard needs to take. set /reset status indicators ( hex ed ) - responds ack. - receives option byte.
* this specification are subject to be changed without notice. 4 6.9.2000 em83053a/bh keyboard encoder - responds ack. - updates status indicators. - returns to previous scanning state. echo ( hex eeh ) - responds with ee hex. - returns to previous scanning state. invalid commands ( hex ef and f1 ) - returns a resend command. - returns to previous scanning state. select alternate scan codes ( hex f0 ) - responds ack. - clears output buffer. - sets the default typematic rate/delay. - clears last typematic key. - receives option byte. - responds ack. - option byte = 01 : selects scan code set 1 02 : selects scan code set 2 03 : selects scan code set 3 - returns to previous scanning rate. read id (f2) - responds with ack. - discontinues scanning. - sends two id bytes. the second byte will be sent within 500 us after first byte. - resumes scanning. set typematic rate/delay ( hex f3 ) - responds ack. - receives rate/delay value byte - responds ack. - set rate/delay (* note 1) - returns to previous scanning state. * note 1 1. repeat period = ( 8+a ) x ( 2b) x 0.00417 seconds a : binary value of bits 2, 1, and 0. b : binary value of bits 4 and 3. 2. delay = ( c +1 ) x 250 milliseconds c : binary value of bits 6 and 5. bit 7 is always 0.
5 * this specification are subject to be changed without notice. em83053a/bh keyboard encoder 6.9.2000 bit 4~ bit 0 typematic rate 20% bit 4~ bit 0 typematic rate 20% 00000 30.0 10000 7.5 00001 26.7 10001 6.7 00010 24.0 10010 6.0 00011 21.8 10011 5.5 00100 20.0 10100 5.0 00101 18.5 10101 4.6 00110 17.1 10110 4.3 00111 16.0 10111 4.0 01000 15.0 11000 3.7 01001 13.3 11001 3.3 01010 12.0 11010 3.0 01011 10.9 11011 2.7 01100 10.0 11100 2.5 01101 9.2 11101 2.3 01110 8.6 11110 2.1 01111 8.0 11111 2.0 3. default rate = 10.9 chars/sec + 20% default delay = 500 ms 20% enable ( hex f4 ) - responds with ack. - clears output buffer. - clears last typematic key. - start scanning. default disable (hex f5) - responds with ack. - resets all conditions to power-on state. - clears output buffer. - sets the default key type ( scan code set 3 only ). - set the default typematic rate/delay. - clears last typematic key. - stops scanning, set default (hex f6 ) - responds with ack. - resets all conditions to power-on state. - clears output buffer. - sets the default key type ( scan code set 3 only ). - set the default typematic rate/delay. - clears last typematic key. - continues scanning, set all keys ( hex f7,f8,f9,fa )
* this specification are subject to be changed without notice. 6 6.9.2000 em83053a/bh keyboard encoder - responds ack. - clears output buffer. - sets all key type (affect only scan code set 3 operation). f7 : typematic f8 : make/break f9 : make fa : typematic/make/break - returns to previous scanning rate. set key type ( hex fb,fc,fd ) - responds ack. - clears output buffer. - receives key id byte - responds ack. - sets key id type (affect only scan code set 3 operation). fb : typematic fc : make/break fd : make - returns to previous scanning rate. resend ( hex fe ) - sends the previous output again. if the previous byte is resend, the last byte before resend shall be sent. reset ( hex ff ) - responds ack. - checks clock and data lines - reset in the high state for at least 500 microseconds or receives another command. - default to scan code set 2. command to the system the following are the keyboard output commands. acknowledge ( hex fa ) the keyboard sends an acknowledge in response to any valid command from the system except for resend and echo. bat completion code ( hex aa ) this command is issued after successful completion of keyboard self test. echo ( hex ee ) the keyboard sends this code in response to an echo command.
7 * this specification are subject to be changed without notice. em83053a/bh keyboard encoder 6.9.2000 keyboards id ( hex 83ab ) the 2 byte id is issued to respond to read id command. the low byte is sent first, followed by the high byte. keyboard buffer overrun ( hex 00 or ff ) if keyboard buffer overflows, the overrun code will replace the last byte in the buffer. if the keyboard is using scan code set 1 , the code is hex ff. for sets 2 and 3, the code is hex 00. resend ( hex fe ) when the keyboard receives an invalid input or any input with incorrect parity, the resend command is sent. keyboard scan code table the keyboard contains 3 scan code sets. the system defaults to scan code set 2, but can be switched to set 1 or set 3 . the following tables show the key numbers and three scan code sets in hexadecimal values. all the keys are typematics except for the pause key. when a key is pressed down, the make scan code is sent to the system. when the key is released, its break code is sent. if two or more keys are held down, only the last key pressed repeats at the typematic rate. typematic operation stops when the last pressed key is released, even if other keys are being released or some other keys are still held down. the following table shows three scan code sets used in the keyboard. scan code set 1 key make code break code key make code break code `(~) 29 a9 x 2d ad 10282 c2eae 20383v2faf 30484 b30b0 40585n31b1 50686m32b2 6 07 87 ,(<) 33 b3 7 08 88 .(>) 34 b4 8 09 89 /(?) 35 b5 9 0a 8a shift_r 36 b6 0 0b 8b ctrl_l 1d 9d -(-) 0c 8c alt_l 38 b8 =(+) 0d 8d space 39 b9 back space 0e 8e alt_r e0 38 e0 b8 tab 0f 8f ctrl_r e0 1d e0 9d q 10 90 num 45 c5 w 11 91 (7) 47 c7 e 1292 (4)4bcb r 13 93 (1) 4f cf t 14 94 (8) 48 c8 y 15 95 (5) 4c cc
* this specification are subject to be changed without notice. 8 6.9.2000 em83053a/bh keyboard encoder key make code break code key make code break code u 16 96 (2) 50 d0 i1797 ( q )52d2 o 18 98 (*) 37 b7 p 19 99 (9) 49 c9 [({) 1a 9a (6) 4d cd ](}) 1b 9b (3) 51 d1 \( )@1 2b ab (del) 53 d3 caps 3a ba (-) 4a ca a 1e 9e (+) 4e ce s 1f 9f (enter) e0 1c e0 9c d 20 a0 esc 01 81 f21a1f13bbb g22a2f23cbc h23a3f33dbd j24a4f43ebe k25a5f53fbf l26a6f640c0 ;(:) 27 a7 f7 41 c1 '(") 28 a8 f8 42 c2 k42 @2 2b ab f9 43 c3 enter 1c 9c f10 44 c4 shift_l 2a aa f11 57 d7 k45 @2 56 d6 f12 58 d8 z 2c ac scroll 46 c6 key base case,or shift + nun lock shift case @3 num lock make/break make/break make/break ins e0 52 / e0 d2 e0 aa e0 52 e0 2a e0 52 / e0 d2 e0 2a / e0 d2 e0 aa del e0 53 / e0 d3 e0 aa e0 53 e0 2a e0 53 / e0 d3 e0 2a / e0 d3 e0 aa left e0 4b / e0 cb e0 aa e0 4b e0 2a e0 4b / e0 cb e0 2a / e0 cb e0 aa home e0 47 / e0 c7 e0 aa e0 47 e0 2a e0 47 / e0 c7 e0 2a / e0 c7 e0 aa end e0 4f / e0 cf e0 aa e0 4f e0 2a e0 4f / e0 cf e0 2a / e0 cf e0 aa up e0 48 / e0 c8 e0 aa e0 48 e0 2a e0 48 / e0 c8 e0 2a / e0 c8 e0 aa down e0 50 / e0 d0 e0 aa e0 50 e0 2a e0 50 / e0 d0 e0 2a / e0 d0 e0 aa page up e0 49 / e0 c9 e0 aa e0 49 e0 2a e0 49 / e0 c9 e0 2a / e0 c9 e0 aa page e0 51 / e0 d1 e0 aa e0 51 e0 2a e0 51 down / e0 d1 e0 2a / e0 d1 e0 aa right e0 4d / ed cd e0 aa e0 4d e0 2a e0 4d / e0 cd e0 2a / e0 cd e0 aa
9 * this specification are subject to be changed without notice. em83053a/bh keyboard encoder 6.9.2000 key scan code make/break shift case make/break @3 (/) e0 35 / e0 b5 e0 aa e0 35 / e0 b5 e0 2a key scan code ctrl case, shift case alt case make/break make/ break make/break print e0 2a e0 37 e0 37 / e0 b7 54 / d4 / e0 b7 e0 aa key make code ctrl key pressed pause @4 e1 1d 45 e1 9d c5 e0 46 e0 c6 note . @1 : 101-key keyboard only. @2 : 102-key keyboard only. @3 : if the left shift key is held down, the aa/2a shift make and break is sent with the other scan codes. if the right shift key is held down, b6/36 is sent. if both shift keys are down, both sets of codes are sent with the other scan code. @4 : this key is not typematic. all associated scan codes occur on the make of the key. scan code set 2 key make code break code key make code break code `(~) 0e f0 0e x 22 f0 22 1 16 f0 16 c 21 f0 21 2 1e f0 1e v 2a f0 2a 3 26 f0 26 b 32 f0 32 4 25 f0 25 n 31 f0 31 5 2e f0 2e m 3a f0 3a 6 36 f0 36 ,(<) 41 f0 41 7 3d f0 3d .(>) 49 f0 49 8 3e f0 3e /(?) 4a f0 4a 9 46 f0 46 shift_r 59 f0 59 0 45 f0 45 ctrl_l 14 f0 14 -(-) 4e f0 4e alt_l 11 f0 11 =(+) 55 f0 55 space 29 f0 29 back space 66 f0 66 alt_r e0 11 e0 f0 11 tab 0d f0 0d ctrl_r e0 14 e0 f0 14 q 15 f0 15 num 77 f0 77 w 1d f0 1d (7) 6c f0 6c e 24 f0 24 (4) 6b f0 6b r 2d f0 2d (1) 69 f0 69 t 2c f0 2c (8) 75 f0 75 y 35 f0 35 (5) 73 f0 73 u 3c f0 3c (2) 72 f0 72 i 43 f0 43 (0) 70 f0 70 o 44 f0 44 (*) 7c f0 7c p 4d f0 4d (9) 7d f0 7d [({) 54 f0 54 (6) 74 f0 74 ](}) 5b f0 5b (3) 7a f0 7a \( )@5 5d f0 5d (del) 71 f0 71
* this specification are subject to be changed without notice. 10 6.9.2000 em83053a/bh keyboard encoder key make code break code key make code break code caps 58 f0 58 (-) 7b f0 7b a 1c f0 1c (+) 79 f0 79 s 1b f0 1b (enter) e0 5a e0 f0 5a d 23 f0 23 esc 76 f0 76 f 2b f0 2b f1 05 f0 05 g 34 f0 34 f2 06 f0 06 h 33 f0 33 f3 04 f0 04 j 3b f0 3b f4 0c f0 0c k 42 f0 42 f5 03 f0 03 l 4b f0 4b f6 0b f0 0b ;(:) 4c f0 4c f7 83 f0 83 '(") 52 f0 52 f8 0a f0 0a k42 @6 5d f0 5d f9 01 f0 01 enter 5a f0 5a f10 09 f0 09 shifft_l 12 f0 12 f11 78 f0 78 k45 @6 61 f0 61 f12 07 f0 07 z 1a f0 1a scroll 7e f0 7e key base case,or shift case @7 num lock shift + nun lock make/break make/break make/break ins e0 70 / e0 f0 70 e0 f0 12 e0 70 e0 12 e0 70 / e0 f0 70 e0 12 / e0 f0 70 e0 f0 12 del e0 71 / e0 f0 71 e0 f0 12 e0 71 e0 12 e0 71 / e0 f0 71 e0 12 / e0 f0 71 e0 f0 12 left e0 6b / e0 f0 6b e0 f0 12 e0 6b e0 12 e0 6b / e0 f0 6b e0 12 / e0 f0 6b e0 f0 12 home e0 6c / e0 f0 6c e0 f0 12 e0 6c e0 12 e0 6c / e0 f0 6c e0 12 / e0 f0 6c e0 f0 12 end e0 69 / e0 f0 69 e0 f0 12 e0 69 e0 12 e0 69 / e0 f0 69 e0 12 / e0 f0 69 e0 f0 12 up e0 75 / e0 f0 75 e0 f0 12 e0 75 e0 12 e0 75 / e0 f0 75 e0 12 / e0 f0 75 e0 f0 12 down e0 72 / e0 f0 72 e0 f0 12 e0 72 e0 12 e0 72 / e0 f0 72 e0 12 / e0 f0 72 e0 f0 12 page up e0 7d / e0 f0 7d e0 f0 12 e0 7d e0 12 e0 7d / e0 f0 7d e0 12 / e0 f0 7d e0 f0 12 page down e0 7a / e0 f0 7a e0 f0 12 e0 7a e0 12 e0 7a / e0 f0 7a e0 12 / e0 f0 7a e0 f0 12 right e0 74 / e0 f0 74 e0 f0 12 e0 74 e0 12 e0 74 / e0 f0 74 e0 12 / e0 f0 74 e0 f0 12 key scan code make/break shift case make/break @7 (/) e0 4a / e0 f0 4a e0 f0 12 e0 4a / e0 f0 4a e0 12 key scan code ctrl case, shift case alt case make/break make/ break make/break print e0 12 e0 7c e0 7c / e0 f0 7c 84 / f0 84 / e0 f0 7c e0 f0 12
11 * this specification are subject to be changed without notice. em83053a/bh keyboard encoder 6.9.2000 key make code ctrl key pressed pause @8 e1 14 77 e1 f0 14 f0 77 e0 7e e0 f0 7e note . @5 : 101-key keyboard only. @6 : 102-key keyboard only. @7 : if the left shift key is held down, the f0 12/12 shift make and break is sent with the other scan codes. if the right shift key is held down, f0 59/59 is sent. if both shift keys are down, both sets of codes are sent with the other scan code. @8 : this key is not typematic. all associated scan codes occur on the make of the key. scan code set 3 key make code break code default key state `(~) 0e f0 0e typematic 1 16 f0 16 typematic 2 1e f0 1e typematic 3 26 f0 26 typematic 4 25 f0 25 typematic 5 2e f0 2e typematic 6 36 f0 36 typematic 7 3d f0 3d typematic 8 3e f0 3e typematic 9 46 f0 46 typematic 0 45 f0 45 typematic -(_) 4e f0 4e typematic =(+) 55 f0 55 typematic back space 66 f0 66 typematic tab 0d f0 0d typematic q 15 f0 15 typematic w 1d f0 1d typematic e 24 f0 24 typematic r 2d f0 2d typematic t 2c f0 2c typematic y 35 f0 35 typematic u 3c f0 3c typematic i 43 f0 43 typematic o 44 f0 44 typematic p 4d f0 4d typematic [({) 54 f0 54 typematic ](}) 5b f0 5b typematic \( ) @9 5c f0 5c typematic caps 14 f0 14 make/break a 1c f0 1c typematic s 1b f0 1b typematic d 23 f0 23 typematic f 2b f0 2b typematic g 34 f0 34 typematic h 33 f0 33 typematic
* this specification are subject to be changed without notice. 12 6.9.2000 em83053a/bh keyboard encoder key make code break code default key state j 3b f0 3b typematic k 42 f0 42 typematic l 4b f0 4b typematic ;(:) 4c f0 4c typematic '(") 52 f0 52 typematic k42 @10 53 f0 53 typematic enter 5a f0 5a typematic shift_l 12 f0 12 make/break k45 @10 13 f0 13 typematic z 1a f0 1a typematic x 22 f0 22 typematic c 21 f0 21 typematic v 2a f0 2a typematic b 32 f0 32 typematic n 31 f0 31 typematic m 3a f0 3a typematic ,(<) 41 f0 41 typematic .(>) 49 f0 49 typematic /(?) 4a f0 4a typematic shift_r 59 f0 59 make/break ctrl_l 11 f0 11 make/break alt_l 19 f0 19 make/break space 29 f0 29 typematic alt_r 39 f0 39 make only ctrl_r 58 f0 58 make only ins 67 f0 67 make only del 64 f0 64 typematic left 61 f0 61 typematic home 6e f0 6e make only end 65 f0 65 make only up 63 f0 63 typematic down 60 f0 60 typematic page up 6f f0 6f make only page down 6d f0 6d make only right 6a f0 6a typematic num 76 f0 76 make only (7) 6c f0 6c make only (4) 6b f0 6b make only (1) 69 f0 69 make only (/) 77 f0 77 make only (8) 75 f0 75 make only (5) 73 f0 73 make only (2) 72 f0 72 make only (0) 70 f0 70 make only (*) 7e f0 7e make only (9) 7d f0 7d make only (6) 74 f0 74 make only (3) 7a f0 7a make only
13 * this specification are subject to be changed without notice. em83053a/bh keyboard encoder 6.9.2000 new key codes for scan set 1: new key make break lwin e0 5b e0 db rwin e0 5c e0 dc app e0 5d e0 dd n-chg (131) 7b fb chg (132) 79 f9 roma (133) 70 f0 k14 7d fd k56 73 f3 k107 7e fe kl f1 x kr f0 x power e0 5e e0 de sleep e0 5f e0 df wake up e0 63 e0 e3 (del) 71 f0 71 make only (-) 84 f0 84 make only (+) 7c f0 7c typematic (enter) 79 f0 79 make only esc 08 f0 08 make only f1 07 f0 07 make only f2 0f f0 0f make only f3 17 f0 17 make only f4 1f f0 1f make only f5 27 f0 27 make only f6 2f f0 2f make only f7 37 f0 37 make only f8 3f f0 3f make only f9 47 f0 47 make only f10 4f f0 4f make only f11 56 f0 56 make only f12 5e f0 5e make only print 57 f0 57 make only scroll 5f f0 5f make only pause 62 f0 62 make only key make code break code default key state note . @9 : 101-key keyboard only @10 : 102-key keyboard only
* this specification are subject to be changed without notice. 14 6.9.2000 em83053a/bh keyboard encoder new key codes for scan set 2: new key make break lwin e0 1f e0 f0 1f rwin e0 27 e0 f0 27 app e0 2f e0 f0 2f n-chg (131) 67 f0 67 chg (132) 64 f0 64 roma (133) 13 f0 13 k14 6a f0 6a k56 51 f0 51 k107 6d f0 6d kl f1 x kr f2 x power e0 37 e0 f0 37 sleep e0 3f e0 f0 3f wake up e0 5e e0 f0 5e new key codes for scan set 3: new key make break lwin 8b f0 8b make/break rwin 8c f0 8c make/break app 8d f0 8d make/break n-chg (131) 85 f0 85 make chg (132) 86 f0 86 make roma (133) 87 f0 87 make k14 5d f0 5d typematic k56 51 f0 51 typematic k107 7b f0 7b typematic kl f1 x kr f2 x power x x sleep x x wake up x x windows 2000 multi-media key code. set1 set2 make break make break k130 : www back e06a e0ea e038 e0f038 k131 : wwwforward e069 e0e9 e030 e0f030 k132 : wwwstop e068 e0e8 e028 e0f028 k133 : wwwrefresh e067 e0e7 e020 e0f020 k134 : wwwsearch e065 e0e5 e010 e0f010 k135 : wwwfavorites e066 e0e6 e018 e0f018 k136 : wwwweb/home e032 e0b2 e03a e0f03a k137 : mail e06c e0ec e048 e0f048 k138 : mute e020 e0a0 e023 e0f023 k139 : volume- e02e e0ae e021 e0f021 k140 : volume+ e030 e0b0 e032 e0f032 k141 : play/pause e022 e0a2 e034 e0f034 k142 : stop e024 e0a4 e03b e0f03b k143 : pretrack e010 e090 e015 e0f015 k144 : nexttrack e019 e099 e04d e0f04d k145 : media select e06d e0ed e050 e0f050 k146 : mycomputer e06b e0eb e040 e0f040 k147 : calculator e021 e0a1 e02b e0f02b
15 * this specification are subject to be changed without notice. em83053a/bh keyboard encoder 6.9.2000 turbo function: fn+ f1 2.1hz f6 30hz f2 4.2hz f7 46hz f3 7.2hz f11 keyloak f4 16.3hz f5 21hz internal-multikey function: multi-media function internal function o.s. function fn+ pad_2 volume- pad_enter web/home pad_0 mycomputer (m/mode) pad_3 play/pause pad_+ mail pad_1 calculator pad_4 pretrack pad_- favorites pad_5 media pad_. search pad_6 nexttrack right arrow forward e eur key pad_7 mute left arrow back pad_8 volume+ down arrow stop pad_9 stop up arrow refresh
* this specification are subject to be changed without notice. 16 6.9.2000 em83053a/bh keyboard encoder fig 2. the 107-key keyboard layout fig 3. the 104-key keyboard layout fig 1. the windows 2000 keyboard layout (-) (+) (enter) (*) (9) (6) (3) (*) (/) (8) (5) (2) num (7) (4) (1) (0) pause scroll print page up page down home end ins del right up down left f12 f11 f10 space enter shift_r ctrl_r ](}) f9 - [({) '(") /(?) alt_r space 10 p 9 o ;(:) .(>) ,(<) l k i u 8 7 6 5 f8 f7 f6 f5 f4 f3 f2 f1 esc (~) (_) = (+) 1234 tab q w e r t y caps a s d f g h j shift_l z x c v b n m ctrl_l alt_l ` \( ) (-) (+) (enter) (*) (9) (6) (3) (*) (8) (5) (2) num (7) (4) (1) (0) sleep pause page down scroll end print del page up home ins right up down left f12 f11 f10 space enter shift_r ctrl_r ](}) app f9 - [({) '(") rwin /(?) alt_r space 10 p 9 o ;(:) .(>) ,(<) l k i u 8 7 6 5 f8 f7 f6 f5 f4 f3 f2 f1 esc (~) (_) = (+) 1234 tab q w e r t y caps a lwin sdf gh j shift_l z x cvbnm ctrl_l alt_l ` \( ) (/) wake up power (-) (+) (enter) (*) (9) (6) (3) (*) (8) (5) (2) num (7) (4) (1) (0) scroll page up page down home end ins del right up down left f12 f11 f10 space enter ctrl_r ](}) f9 - [({) '(") /(?) alt_r space 10 p 9 o ;(:) .(>) ,(<) l k i u 8 7 6 5 f8 f7 f6 f5 f4 f3 f2 f1 esc (~) (_) = (+) 1234 tab q w e r t y caps a s d f g h j shift_l z x c v b n m ctrl_l alt_l ` \( ) (/) pause print shift_r app rwin lwin k130 k131 k132 k133 k134 k135 k136 k137 k138 k139 k140 k141 k142 k143 k144 k145 k146 k147
17 * this specification are subject to be changed without notice. em83053a/bh keyboard encoder 6.9.2000 absolute maximum ratings parameter sym. ratings supply voltage v cc -0.5v to +7v input voltage v in -0.3v to +6v output voltage v out -0.3v to +6v temperature under bias t b 0 c to 70 c storage temperature t s -65 c to 150 c dc electrical characteristics parameter sym. min. typ. max. unit condition operating voltage v cc 4.5 5 5.5 v operating supply current i cci 3 ma fosc=1.8432mhz input leakage i in 1 m av in =v cc ,v ss input high voltage v ih 2.0 v input low voltage v il 0.8 v output low voltage v ol1 0.4 v i ol1 = 3.0 ma output low voltage for leds v ol2 3.2 v i ol2 = 10 ma internal pull-high resistance ( port 6,9 ) r ph1 12 23 k w v ph1 = 0v internal pull-high resistance for r ph2 1.5 2.2 3 k w v ph2 = 0v data, clk output low voltage for data clk v ol3 0.4 v i ol3 = 5 ma ac electrical characteristics parameter sym. min. typ. max. unit time from data transition to falling edge of clk t1 5 25 m s time from rising edge of clk to data transition t2 5 t4 - 5 m s duration of clk inactive t3 30 40 50 m s duration of clk active t4 30 40 50 m s time to auxiliary device inhibit after clock 11 to ensure t5 50 m s the auxiliary device does not start another transmission time from inactive to active clk transition, used to time t6 5 25 m s when auxiliary device samples data system clock fclk 1.843 mhz
* this specification are subject to be changed without notice. 18 6.9.2000 em83053a/bh keyboard encoder timing diagrams clk data 1st clk 2nd clk 10th clk 11th clk t1 t3 t4 t2 t5 start bit bit 0 parity bit stop bit fig 3. keyboard output data timings clk data start bit 1st clk 2nd clk 9th clk 10th clk 11th clk parity bit stop bit bit 0 t3 t4 t6 i/o inhibit fig 4. keyboard input data timings
19 * this specification are subject to be changed without notice. em83053a/bh keyboard encoder 6.9.2000 application circuit scroll led num led caps led r4 r3 r2 r1 r0 c2 vcc p91 p92 p93 p94 p95 p50 p51 p52 p53 p54 6 7 8 9 10 11 12 13 14 15 36 35 34 33 32 31 30 29 28 27 r_osci vdd caps p55 p56 p57 p80 p81 p82 p83 p84 p85 p86 p87 16 17 18 19 20 21 22 23 24 25 26 5 4 3 2 1 39 38 37 num scroll p67 p66 p65 p64 p63 p62 p61 p60 em83053bh p90 clk data osco gnd data c3 c4 c5 c7 c14 c6 c13 c12 c11 c15 c16 c17 c0 c9 c8 c10 r7 r6 r5 c1 clk 51k turbo func. special func. internal-multi func. vcc r3 r led scroll led num led caps led r4 r3 r2 r1 r0 c2 vcc 10 p91 p92 p93 p94 p95 p50 p51 p52 p53 p54 6 7 8 9 10 11 12 13 14 15 36 35 34 33 32 31 30 29 28 27 r_osci vdd vdd caps p55 p56 p57 p80 p81 p82 p83 p84 p85 p86 p87 16 17 18 19 20 21 22 23 24 25 26 5 4 3 2 1 40 39 38 37 num scroll p67 p66 p65 p64 p63 p62 p61 p60 EM83053AH p90 clk data osco gnd data c3 c4 c5 c7 c14 c6 c13 c12 c11 c15 c16 c17 c0 c9 c8 c10 r7 r6 r5 c1 clk 51k turbo func. special func. internal-multi func. vcc r3 r led
* this specification are subject to be changed without notice. 20 6.9.2000 em83053a/bh keyboard encoder c0 c1 c2 c3 c4 c5 c6 c7 c8 c9 c10 c11 c12 c13 c14 c15 c16 c17 (k) (k) 8 (k) 9 (k) + (k) 126 017 018 019 020 023 024 025 026 125 014 091 096 101 106 (kc-l) r0 pause q w e r u i o p scroll k14 7 wake up mail k150 r1 wwwfavorite 016 030 114 021 022 028 118 027 015 092 097 102 044 win-l 4 (k) 5 (k) 6 (k) k107 shift-l power tab cap f3 t y ](}) f7 [({) back r2 (k) wwwforward 031 032 033 034 037 038 039 040 029 093 098 103 108 057 win-r (k) (k) (k) a s d f j k l ;(:) \(|) 1 2 3 enter shift-r r3 110 045 115 035 036 117 041 060 122 061 099 104 083 (k) sleep esc k45 f4 g h f6 '(") alt-l f11 space 0 - r4 (k) 064 046 047 048 049 052 053 054 042 043 090 095 100 (k) ctrl-r z x c v m ,(<) .(>) k42 enter num / * stop r5 131 132 133 050 051 056 app 055 062 123 084 089 105 079 wake up n-chg chg roma b n k56 app /(?) alt-r f12 ? - ? r6 058 001 112 113 006 007 013 119 012 120 076 075 085 080 ctrl-l `(~) f1 f2 5(%) 6(^) +`(=) f8 _(-) f9 del ins page up home prevtrack mute r7 down 116 002 003 004 005 008 009 010 011 124 121 086 081 f5 1(!) 2(@) 3(#) 4($) 7(&) 8(*) 9(')') 0(')') print f10 power sleep page end wwwsearch k151 (kc-r) volume- wwwstop mycpmputer wwwback volume+ nexttrack wwwrefresh calculator web/home media play/pause fn m/mode
21 * this specification are subject to be changed without notice. em83053a/bh keyboard encoder 6.9.2000 pad diagram pad no. symbol x y 1 gnd -171.6 824.6 2 osco -384.7 849.2 3 data -580.9 849.2 4 clk -742.5 817.2 5 p90 -742.5 621.0 6 p91 -723.7 467.2 7 p92 -723.7 347.2 8 p93 -723.7 223.0 9 p94 -723.7 103.0 10 p95 -723.7 -21.2 11 p50 -715.1 -143.1 12 p51 -715.1 -263.1 13 p52 -715.1 -386.8 14 p53 -715.1 -506.8 15 p54 -707.8 -825.1 16 p55 -587.8 -825.1 17 p56 -464.1 -825.1 18 p57 -344.1 -825.1 19 p80 -220.0 -833.7 20 p81 -100.0 -833.7 21 p82 24.0 -825.1 22 p83 144.0 -825.1 23 p84 267.8 -825.1 24 p85 387.8 -825.1 25 p86 511.5 -825.1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 gnd data clk p90 p91 p92 p93 p94 p95 p50 p51 p52 p53 p54 p55 p56 p57 p80 p81 p82 p83 p84 p85 p86 p87 p60 p61 p62 p63 p64 p65 p66 p67 scroll nom caps vdd vdd osci osco EM83053AH (0,0)
* this specification are subject to be changed without notice. 22 6.9.2000 em83053a/bh keyboard encoder chip size : 1790 x 2010 m m pad no. symbol x y 26 p87 633.4 -825.1 27 p60 754.8 -825.1 28 p61 741.7 -636.9 29 p62 741.7 -470.1 30 p63 741.7 -301.3 31 p64 741.7 -134.6 32 p65 741.7 34.2 33 p66 741.7 201.0 34 p67 741.7 369.8 35 p72 741.7 536.5 36 p71 741.7 705.3 37 p70 706.8 854.2 38 vdd 504.5 824.6 39 vdd 384.5 824.6 40 osci 264.5 832.2
23 * this specification are subject to be changed without notice. em83053a/bh keyboard encoder 6.9.2000 pad diagram pad no. symbol x y 1 gnd 197.9 720.4 2 osco -220.2 715.2 3 data -353.1 728.1 4 clk -476.3 728.1 5 p90 -659.8 623.2 6 p91 -659.8 503.5 7 p92 -659.8 383.9 8 p93 -659.8 264.3 9 p94 -659.8 144.6 10 p95 -659.8 25.0 11 p50 -659.8 -94.7 12 p51 -659.8 -214.4 13 p52 -659.8 -334.1 14 p53 -659.8 -453.8 15 p54 -659.8 -577.9 16 p55 -521.0 -749.9 17 p56 -401.3 -749.9 18 p57 -281.6 -749.9 19 p80 -161.9 -749.9 20 p81 -42.3 -749.9 21 p82 77.3 -749.9 22 p83 197.0 -749.9 23 p84 316.7 -749.9 24 p85 436.4 -749.9 25 p86 556.1 -749.9 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 1 gnd dataio clkio p90 p91 p92 p93 p94 p95 p50 p51 p52 p53 p54 p55 p56 p57 p80 p81 p82 p83 p84 p85 p86 p87 p60 p61 p62 p63 p64 p65 p66 p67 vdd osci osco em83053bh (0,0) p72 p71 p70
* this specification are subject to be changed without notice. 24 6.9.2000 em83053a/bh keyboard encoder chip size : 1650 x 1830 m m pad no. symbol x y 26 p87 675.8 -749.9 27 p60 660.0 -549.9 28 p61 660.0 -430.3 29 p62 660.0 -311.8 30 p63 660.0 -192.2 31 p64 660.0 -72.5 32 p65 660.0 47.2 33 p66 660.0 166.8 34 p67 660.0 290.8 35 p72 656.9 410.4 36 p71 656.9 528.9 37 p70 656.9 648.5 38 vdd 458.0 726.7 39 osci 316.3 715.2

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