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1 pmw3325db - twv1 general datasheet optical gaming navigation chip pixart imaging inc. pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without per mission. version 1.40 | 12 aug 2016 |31005aen p mw3325db - tw v1 : optical gaming navigation chip general description pmw3325db - twv1 is pixart imaging's optical gaming navigation chip suitable for wired & wireless gaming mouse application . it is packaged in an 8pin staggered dual - in - line package ( dip). it provides excellent gami ng experience with the features of high speed & resolution to fulfill gamers need. the chip comes with self - adjusting variable frame rate algorithm to enable wireless gaming application. it is designed to be used with lm31 - lng or lm33 - lsg lens to achieve optimum performance. key features ? small form factor pdip 8l molded lead - frame package ? operating voltage: 1.80v - 2.10v ? high speed motion detection 100ips (typical) and acceleration 20g (max). ? selectable resolutions up to 5000 cpi ? three - wire serial port interface (sdi0) ? internal oscillator no clock input needed ? self - adjusting variable frame rate for optimum power performance in wireless application ? programmable rest modes for; ? corded gaming mode ? cordless g aming mode ? customizable response time and downshift time for rest modes ? angle snapping applications ? wired gaming optical mouse ? wireless gaming optical mouse ? trackball application key parameters parameter value supply voltage (v) vdd: 1. 8 0 C 2.10v interface 3 - w ire s erial peripheral interface supply current (average) @ vdd = 2.0v note: includes led current run avg .: 6 . 70 ma rest1: 1. 6 0 ma rest2: 72 ua rest3: 56 ua power down: 5ua resolution (cpi) up to 5000 tracking speed (ips) 100 acceleration (g) 2 0 package type ( mm) 8l pdip ordering information part number package type pmw3 325 db - twv1 8 - pin dip package lm31 - lng trim lens lm33 - lsg small trim lens for any additional inquiries, please contact us at http://www.pixart.com/contact.asp
2 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip contents pmw3325db - twv1: optical gaming navigation chip ................................ ................................ ................................ ............. 1 general description ................................ ................................ ................................ ................................ ............................ 1 key features ................................ ................................ ................................ ................................ ................................ ........ 1 applications ................................ ................................ ................................ ................................ ................................ ......... 1 key parameters ................................ ................................ ................................ ................................ ................................ ... 1 ordering information ................................ ................................ ................................ ................................ .......................... 1 list of figures ................................ ................................ ................................ ................................ ................................ ........... 3 list of tables ................................ ................................ ................................ ................................ ................................ ............ 3 introduction ................................ ................................ ................................ ................................ ................................ . 4 1.1 overview ................................ ................................ ................................ ................................ ................................ . 4 1.2 terminology ................................ ................................ ................................ ................................ ............................ 4 1.3 pins description ................................ ................................ ................................ ................................ ....................... 5 operating specifications ................................ ................................ ................................ ................................ .............. 6 2.1 absolute maximum ratings ................................ ................................ ................................ ................................ ..... 6 2.2 recommended operating conditions ................................ ................................ ................................ ..................... 6 2.3 thermal specifications ................................ ................................ ................................ ................................ ............ 7 2.4 dc characteristics ................................ ................................ ................................ ................................ .................... 7 2.5 ac characteristics ................................ ................................ ................................ ................................ .................... 8 mechanical specifications ................................ ................................ ................................ ................................ .......... 10 3.1 mechanical dimension ................................ ................................ ................................ ................................ .......... 10 3.2 package marking ................................ ................................ ................................ ................................ ................... 11 3.3 assembly drawings ................................ ................................ ................................ ................................ ................ 11 3.4 lens outline drawing ................................ ................................ ................................ ................................ ............ 14 system level description ................................ ................................ ................................ ................................ ........... 16 4.1 reference application schematic diagram ................................ ................................ ................................ ............ 16 4.2 pcb assembly recommendation ................................ ................................ ................................ ........................... 17 registers ................................ ................................ ................................ ................................ ................................ .... 18 5.1 registers list ................................ ................................ ................................ ................................ .......................... 18 document revision history ................................ ................................ ................................ ................................ .................... 19
3 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip list of figures figure 1. functional block diagram ................................ ................................ ................................ ................................ ......... 4 figure 2. pin configuration ................................ ................................ ................................ ................................ ...................... 5 figure 3 mean resolution vs. z height at resolution of 3000cpi ................................ ................................ ............................. 9 figure 4. package drawing outline ................................ ................................ ................................ ................................ ........ 10 figure 5. recommended chip orientation, mechanical cutouts & spacing (top view) ................................ ......................... 11 figure 6. distance from lens reference plane to surface ................................ ................................ ................................ ..... 12 figure 7. exploded view of mouse assembly ................................ ................................ ................................ ........................ 12 figure 8. 2d assembly ................................ ................................ ................................ ................................ ........................... 13 figure 9. lm31 - lng trim lens outline drawing ................................ ................................ ................................ ................... 14 figure 10. lm33 - lsg small trim lens outline drawings ................................ ................................ ................................ ....... 15 figure 11. pmw3325db - twv1 reference mouse schematic ................................ ................................ ............................... 16 list of tables table 1. pmw3325db pins description ................................ ................................ ................................ ................................ ... 5 table 2. absolute maximum ratings ................................ ................................ ................................ ................................ ....... 6 table 3. recommended operating conditions ................................ ................................ ................................ ........................ 6 table 4. thermal specifications ................................ ................................ ................................ ................................ ............... 7 table 5. dc electrical specifications ................................ ................................ ................................ ................................ ........ 7 table 6. ac electrical specifications ................................ ................................ ................................ ................................ ........ 8 table 7. package dimensions ................................ ................................ ................................ ................................ ................ 10 table 8. code identification ................................ ................................ ................................ ................................ ................... 11 table 9. register list ................................ ................................ ................................ ................................ .............................. 18
4 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip introduction 1.1 overview pmw3325db - twv1 is based on optical navigation technology, which measures changes in position by optically acquiring sequential surface images (frames) and mathematically determining the direction and magnitude of movement. pmw332 5db - twv1 contains an image acquisition system (ias), a digital signal processor (dsp), and a three - wire serial port. the ias acquires microscopic surface images via the lens and illumination system. these images are processed by the dsp to determine the di rection and distance of motion. the dsp calculates the x and y relative displacement values. an external microcontroller reads and translates the x and y information from the chip serial port into ps2, usb, or rf signals before sending them to the host pc. note: throughout this document pmw3325db - twv1 is referred to as the pmw3325db . figure 1 . functional block diagram 1.2 terminology term description dsp digital signal processing led light emitting diode ncs chip select vddpix internal regulator output vdd supply voltage sclk serial clock sdio serial data in & out spi serial peripheral interface gnd ground pmw3325db - twv1 serial port and registers led drive r power and control oscillator dsp vdd gnd led sclk ncs vdd pix sdio vddio
5 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip 1.3 pins description figure 2 . pin configuration table 1 . pmw3325 db pins description pin no. name type description 1 led input led illumination control input 2 vdd pix power regulator output for selective analog circuit 3 vdd power power supply 4 sclk in serial clock input 5 vddio power interface signal voltage level 6 gnd gnd ground 7 sdio input /output s erial data in/out 8 ncs input chip select (active low)
6 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip operating specifications 2.1 absolute maximum ratings stresses greater than those listed under absolute maximum ratings may cause permanent damage to the device. these are the stress ratings only and functional operation of the device at these or any other condition beyond those indicated for extended period of time may affect device reliability. table 2 . absolute maximum ratings parameters symbol min. max. unit notes storage temperature t s - 40 85 c lead solder temperature t solder 260 c for 10 seconds, 1.6mm below seating plane supply voltage v dd - 0.5 2.1 5 v including v na of 100 mv pp esd esd hbm 2 k v all pins, human body model mil 883 method 3015 input voltage v in - 0.5 vdd +0.5 v all digital pins output latch up current ma 200 all digital pins notes: 1. stresses greater than those listed under absolute maximum ratings may cause permanent damage to the device. these are the stress ratings only and functional operation of the device at these or any other condition beyond those indicated for extended period of time may affect device reliability. 2. the maximum ratings do not reflect eye - safe operation. 3. the inherent design of this component causes it to be sensitive to electrostatic discharge. the es d threshold is listed above. to prevent esd induced damage, take adequate esd precautions when handling this product 2.2 recommended operating conditions table 3 . recommended operating conditions description symbol min. typ. max. unit notes operating temperature t a 0 4 0 c power supply voltage v dd 1.8 0 2.00 2. 10 v power supply rise time t rt 0.15 20 ms 0 to vdd supply noise (sinusoidal) v na 100 mv p - p 10khz C 50mhz serial port clock frequency f sclk 2 mhz active drive, 50% duty cycle distance from lens reference plane to tracking surface z 2.20 2.40 2.60 mm results in +/ - 0.2 mm minimum dof. speed s 100 ips acceleration a 20 g in run mode load capacitance c out 100 pf sdio and motion note: pixart does not guarantee the chip performance if the operating temperature is beyond the specified limit.
7 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip 2.3 thermal specifications table 4 . thermal specifications parameters symbol min. typ. max. unit notes storage temperature t s - 25 - 80 c lead - free solder temperature t p - - 260 c for 10 seconds, 1.6mm below seating plane for wave soldering 2.4 dc characteristics table 5 . dc electrical specifications parameters symbol min. typ. max. unit conditions dc supply current in various modes i dd_run [vfr1+vfr2] i dd_run_vfr1 [3k fps] i dd_run_vfr2 [4.6k fps] i dd_rest1 i dd_rest2 i dd_rest3 6.70 6.20 8.50 1.60 72 56 ma ma ma ma ua ua i dd_run_[vfr1 +vfr2] number is based on the assumption of; vfr1:vfr2 = 90%:10% mcu poll the motion register s at the 1ms interval power down current i pd 5 ua input low voltage v il 0. 3 * vdd v sclk, sdio , ncs input high voltage v ih 0. 7 * vdd v sclk, sdio , ncs input hysteresis v i_hys 100 mv sclk, sdio , ncs , vddio input leakage current i leak 1 10 ua vin=vdd - 0.6v or 0v, sclk, sdio, ncs , vddio output low voltage v ol 0.45 v i out = 1ma, sdio output low voltage, sdio v oh vdd - 0.45 v i out = - 1ma, sdio input capacitance c in 50 pf sclk, sdio , ncs note: all the parameters are tested under recommended operating conditions. typical values at 25 c, v dd = 2.0 v & led current = 8ma
8 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip 2.5 ac characteristics table 6 . ac electrical specifications parameters symbol min. typ. max. unit condition s motion delay after reset t mot - rst 50 ms from reset to valid motion, assuming motion is present shutdown t stdwn 5 0 0 ? s from shutdown mode active to low current wake up from shutdown t wakeup 50 60 ms from shutdown mode inactive to valid motion. notes: a reset must be asserted after a shutdown. refer to section notes on shutdown, also note t mot - rst. sdio output rise time t r - sdio 50 ns c l = 100pf sdio output fall time t f - sdio 5 0 ns c l = 100pf sdio output delay after sclk t dly - sdio 90 ns from sclk falling edge to sdio outpu t data valid, no load condition sdio output hold time t hold - sdio 20 0 ns data held until next falling sclk edge sdio input hold time t hold - sdio input 200 ns amount of time data is valid after sclk rising edge sdio input setup time t setup - sdio input 120 ns from data valid to sclk rising edge spi time between write commands t sww 45 ? s from rising sclk for last bit of the first data byte, to rising sclk for last bit of the second data byte. spi time between write and read commands t swr 45 ? s from rising sclk for last bit of the 1st data byte, to rising sclk for last bit of the second address byte spi time between read and subsequent commands t srw t srr 2 0 ? s from rising sclk for last bit of the 1st data byte, to falling sclk for the 1st bit of data being read. spi read address - data delay t srad 35 ? s from rising sclk for last bit of the address byte, to falling sclk for the 1st bit of data being read. ncs inactive after motion burst t bexit 500 ns minimum ncs inactive time after motion burst before next spi usage ncs to sclk active t ncs - sclk 120 ns from last ncs falling edge to 1st sck rising edge. sclk to ncs inactive sdio write t sclk - ncs write 1 2 0 ns from last sclk falling edge to ncs rising edge, for valid sdio data transfer
9 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip parameters symbol min. typ. max. unit condition s sclk to ncs inactive sdio read t sclk - ncs read 35 ? s from last sclk falling edge to ncs rising edge, for valid sdio data transfer ncs to sdio high - z t ncs - sdio 50 0 ns from ncs rising edge to sdio high - z state transient supply current iddt 60 ma max supply current during the supply ramp from 0v to v dd with min 150us and max 20ms rise time. (does not include charging currents of bypass capacitors) note: all the parameters are tested under recommended operating condi tions. typical values at 25 c & vdd=2.0 v figure 3 mean res olution vs. z height at resolution of 3000cpi 500 1000 1500 2000 2500 3000 3500 4000 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 cpi height resolution vs z height straight line at 45 degree, path length = 4", speed = 6ips, resolution = 3000cpi lt g240 qck 4hd vespula speed roccat hiro manticor
10 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip mechanical specifications 3.1 mechanical dimension table 7 . package dimensions parameters nominal min. max. unit package body dimension x 9.90 9.80 10.00 mm package body dimension y 9.10 9.00 9.20 mm package width (inclusive pins) 12.85 12.35 13.35 mm lead length 5.15 5.05 5.25 mm lead pitch 2.00 1.85 2.15 mm total lead count 8 - - - lead offset 1.00 - - mm lead width 0.50 0.40 0.60 mm hole diameter 0.70 0.65 0.75 mm ce nter of hole from edge of body x 4.55 4.45 4.65 mm center of hole from edge of body y 3.92 3.82 4.02 mm figure 4 . package drawing outline
11 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip 3.2 package marking refer to 1.3 figure 2 . pin configuration table 8 . code identification code marking description product number pmw3325db - twv1 part number label lot code yywwxxxxx yyww=datecode xxxxx= pixart reserved 3.3 assembly drawings figure 5 . recommended chip orientation, mechanical cutouts & spacing (top view)
12 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip figure 6 . distance from lens reference plane to surface figure 7 . exploded view of mouse assembly
13 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip figure 8 . 2d assembly note: mouse feet should be placed close to the lens openin g (hole) to stabilize soft surfaces to be within the working dof of the chip
14 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip 3.4 lens outline drawing figure 9 . lm31 - lng trim lens outline drawing
15 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip figure 1 0 . lm33 - lsg small trim lens outline drawings
16 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip system level description 4.1 reference application schematic diagram figure 11 . pmw3325 db - twv1 reference mouse schematic the r led value shown in the reference circuit above is used with vdd 1.8v supply connected to led. for other vdd value, the r led value has to be adjusted in order to obtain the 8ma current for led.
17 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip 4.2 pcb assembly recommendation 1. insert the integrated chip and all other electrical components into pcb. 2. wave - solder the entire assembly in a no - wash solder process utilizing solder - fixture. a solder - fixture is required to protect the chip from flux spray and wave solder. 3. avoid getting any solder flux onto the chip body a s there is potential for flux to seep into the chip package. the solder fixture should be designed to expose only the chip leads to flux spray & molten solder while shielding the chip body and optical apertures. the fixture should also set the chip at the correct position and height on the pcb. 4. place the lens onto the base plate. care must be taken to avoid contamination on the optical surfaces. 5. remove the protective kapton tapes from optical apertures of the chip . care must be taken to prevent contaminants from entering the apertures. do not place the pcb with the chip facing up during the entire product assembly process. hold the pcb vertically when removing kapton tape. 6. insert pcb assembly over the lens onto the base plate aligning post to retain pcb asse mbly. the chip package will self - align to the lens via the guide posts. the optical position reference for the pcb is set by the base plate and lens. note that the pcb motion due to button presses must be minimized to maintain optical alignment. 7. install mo use top case. there must be a feature in the top case to press down onto the pcb assembly to ensure all components are stacked or interlocked to the correct vertical height
18 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip registers 5.1 registers list the chip registers are accessible via the serial port. the registers are used to read motion data and status as well as to set the device configuration . table 9 . register list address register name access reset value 0x00 product_id r 0x43 0x02 motion rw 0x00 0x03 delta_x_l r 0x00 0x04 delta_x_h r 0x00 0x05 delta_y_l r 0x00 0x06 delta_y_h r 0x00 0x07 squal r 0x00 0x08 pixel_sum r 0x00 0x09 maximum_pixel r 0x00 0x0a minimum_pixel r 0x00 0x0b shutter_lower r 0x12 0x0c shutter_upper r 0x00 0x15 chip_observation rw 0x80 0x16 burst_motion_read r 0x00 0x19 frame_capture _status r 0x00 0x1b resolution rw 0x2e 0x1e angle_snap rw 0x04 0x20 axis_control rw 0x00 0x24 run_downshift rw 0x06 0x25 rest1_period rw 0x01 0x26 rest1_downshift rw 0x4f 0x27 rest2_period rw 0x19 0x28 rest2_downshift rw 0x5e 0x29 rest3_period rw 0x3f 0x32 frame_capture rw 0x00 0x3a power_up_reset w n/a 0x3b shutdown w n/a 0x3f in v _product_id r 0xbc 0x40 config rw 0x00
19 version 1.40 | 12 aug 2016 | 31005aen pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. pixart imaging inc. pmw3325db - twv1 general datasheet optical gaming navigation chip d ocument revision history revision number date description 1. 4 0 12 aug 2016 - initial creation from pmw3325db - twv1 ds r1.30 - added lm33 - lsg lens outline drawing

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