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PAW3501UI a ll rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. 1 p ixart ima g in g inc. e -mail: fae_service@pixart.com.tw v2.1 april. 2008 PAW3501UI usb optical mouse sensor single chip general description PAW3501UI is a cmos process optical mouse sensor sing le chip with usb interface that serves as a non- mechanical motion estimation engine for implementing a computer mouse. features ? usb interface ? single 5.0 volt power supply ? compatible with microsoft ? windows 2000 ? and 5-button wheel mouse ? optical motion estimation technology ? complete 2-d motion sensor ? accurate motion estimation over a wide range of surfaces ? high speed motion detection up to 28 inches/sec ? high resolution up to 800 cpi ? power savin g mode durin g times of no movement ? supports five buttons (r, m, l, b4, b5) and three axes (x, y, z) output ? z-axis can support two kinds of scroller input (opto-mechanical and mechanical). ? complete universal serial bus ? spec v1.1 compatibility ? complete usb hid spec v1.1 compatibility ? integrated usb transceiver and 1.5 mbps usb serial interface engine key specification power supply wide operating supply range 4.25v ~ 5.5v interface usb optical lens 1:1 system clock 18.000 mhz speed 28 inches/sec acceleration 20g resolution 400/600/800 cpi frame rate 3000 frames/sec operating current 12 ma @mouse moving (normal) 8 ma @mouse not moving (sleep) 480 ua @usb suspend (suspend) package shrunk dip24 ordering information part number cpi sensor rota te device type z-axis type PAW3501UI 400/600/800 0 ? /+90 ? /-90 ? 2d2b/3d3b/3d5b mechanical (z/2) PAW3501UI-p2 400/600/800 0 ? /+90 ? /-90 ? 2d2b/3d3b/3d5b optical (z/2) PAW3501UI-p4 400/600/800 0 ? /+90 ? /-90 ? 2d2b/3d3b/3d5b optical (z/4)
pixart imaging inc. PAW3501UI usb optical mouse sensor single chip a ll rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. 2 p ixart ima g in g inc. e -mail: fae_service@pixart.com.tw v2.1 april. 2008 1. pin configuration 1.1 pin assignment 1 13 12 24 1 13 12 24 lb rb + x + y figure 1. top view pinout figure 2. top view of mouse 1.2 pin description pin # name type definition 1 z1 in z axis, support two kinds of scro ller input, opto-mechan ical and mechanical 2 z2 in z axis, support two kinds of scro ller input, opto-mechan ical and mechanical 3 sr in sensor rotate (0, 1, floating) => (-90, +90, 0), 3-states input 4 irctl out ir led control 5 bm in button middle key input, normal pull-high (50k), press connect to low 6 bl in button left key input, normal pull-high (50k), press connect to low 7 dt in device type (0, 1, floating) => (3d3b, 2d2b, 3d5b), 3-states input 8 b4 in button 4 key input, normal pull-high (50k), press connect to low 9 b5 in button 5 key input, normal pull-high (50k), press connect to low 10 cpi in cpi select to (0, 1, floating) => (800, 600, 400), 3-states input 11 vssled gnd led ground 12 led i/o led control 13 vrefb bypass analog voltage reference 14 vrefa bypass analog voltage reference 15 vdd5v pwr chip power vdd, 5.0v 16 vss gnd chip ground 17 vddq bypass io voltage reference 18 oscin in oscillator input, connect to 18.000mhz crystal or resonator 19 oscout out oscillator output, connect to 18.000mhz crystal or resonator 20 d+ i/o usb d+ 21 d- i/o usb d- 22 br in button right key input, normal pull-high (50k), press connect to low 23 rfu in reserve for future use, paw3501up used the pin to switch usb or ps/2 24 test in test pin. it is needed to connect to gnd in normal operation mode
pixart imaging inc. PAW3501UI usb optical mouse sensor single chip a ll rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. 3 p ixart ima g in g inc. e -mail: fae_service@pixart.com.tw v2.1 april. 2008 2. block diagram and operation cmos image sensor digital signal processor power on reset usb mouse controller debunce led driver d+ d- oscillator voltage regulator and power control br b4 bl bm led vrefa vrefb vdd5v oscin oscout usb interface button resonator voltage reference 5v power b5 z-axis counter z1 z2 wheel vss vddq 18 mhz vssled sr sr ctrl cpi cpi ctrl dt dt ctrl figure 3. block diagram PAW3501UI supports x, y, z three axes, and l, r, m, b4, b5 five buttons under usb mode. it is a cmos process optical mouse sensor single chip with usb inte rface that serves as a non-mechanical motion estimation engine for implementing a computer mouse. PAW3501UI is in a 24-pin optical package and comes with the resolution of 400/600/800 counts per inch (cpi) and the rate of motion up to 28 inches per second. it includes usb interface so that no mouse controller is needed to interface throug h usb. PAW3501UI can receive command an d echo status or data format, both complete universal serial bus ? spec v1.1 and usb hid spec v1.1 compatibility. it is also a cost effective solution to support usb mouse.
pixart imaging inc. PAW3501UI usb optical mouse sensor single chip a ll rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. 4 p ixart ima g in g inc. e -mail: fae_service@pixart.com.tw v2.1 april. 2008 3. specifications 3.1 absolute maximum ratings exposure to absolute maximum rating may affect device reliability. symbol parameter min. max. unit notes t stg storage temperature -40 85 c ta operating temperature -15 55 c lead solder temp 260 c for 10 seconds, 1.6 mm below seating plane. esd 2 kv all pins, human body model mil 883 method 3015 v dc dc supply voltage -0.5 5.5 v v in dc input voltage -0.5 5.5 v all i/o pin 3.2 recommend operating condition symbol parameter min. typ. max. unit notes t a operating temperature 0 40 c v dd power supply voltage 4.25 5.0 5.5 v v n supply noise 100 mv peak to peak within 0 - 100 mhz z distance from lens reference plane to surface 2.3 2.4 2.5 mm refer to figure 4. r resolution 400 600 800 cpi a acceleration 20 g f clk clock frequency 18.000 mhz fr frame rate 3000 frames/sec s speed 0 28 inches/sec
pixart imaging inc. PAW3501UI usb optical mouse sensor single chip a ll rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. 5 p ixart ima g in g inc. e -mail: fae_service@pixart.com.tw v2.1 april. 2008 3.3 dc electrical characteristics electrical characteristics over recommended opera ting conditions. typical values at 25 c, v dd = 5.0 v symbol parameter min. typ. max. unit notes type: usb mouse pwr i dd supply current mouse moving (normal) 12 ma i dd supply current mouse not moving (sleep1) 8 ma i dd supply current suspend current (suspend) 480 ua type: bl, bm, br, b4, b5 r ph internal pull-up resistance 50 kohm type: z1, z2 r pd internal pull-down resistance 50 kohm PAW3501UI built-in internal pull-down resistance. paw3501u i-px needs external pull-down resistance. type: bl, bm, br, b4, b5, z1, z2 v ih input high voltage 2.0 v v il input low voltage 0.8 v type: usb dp, dn r ph internal pull-up resistance 1.5 kohm v ol output low voltage 0.3 v type: oscin v ih input high voltage 2.0 v when driving from an external source v il input low voltage 0.5 v when driving from an external source type: led v ol output voltage low 360 mv i ol = 25 ma
pixart imaging inc. PAW3501UI usb optical mouse sensor single chip a ll rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. 6 p ixart ima g in g inc. e -mail: fae_service@pixart.com.tw v2.1 april. 2008 4. z and 2d assembly z and lens package lid object surface z figure 4. distance from lens reference plane to surface +x +y esd lens ring base plate plastic spring clip pcb sensor base plate alignment post surface is 0 ref. unit: mm led figure 5. 2d assembly
pixart imaging inc. PAW3501UI usb optical mouse sensor single chip a ll rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. 7 p ixart ima g in g inc. e -mail: fae_service@pixart.com.tw v2.1 april. 2008 5. usb interface 5.1 usb command set description ( usb descriptor ) the usb host detects usb mouse device plug-in and assigns a new unique address to the usb mouse device, then asking usb mouse device for information about the device description, configuration description, and assigning a configuration value for usb mouse device during enumeration period. after enumeration, the usb mouse device is able to transfer motion and button value to the usb host. descriptor type byte byte byte byte byte byte byte byte 12 01 10 01 00 00 00 08 3a 09 00 25 00 01 01 02 device descriptor (18 bytes) 00 01 09 02 22 00 01 01 04 a0 configuration descriptor (9 bytes) 32 09 04 00 00 01 03 01 02 interface descriptor (9 bytes) 00 09 21 10 01 00 01 22 48 human interface device descriptor (9 bytes) 00 endpoint descriptor (7 bytes) 07 05 81 03 04 00 0a 05 01 09 02 a1 01 05 09 19 01 29 03 15 00 25 01 95 03 75 01 81 02 95 01 75 05 81 03 05 01 09 01 a1 00 09 30 09 31 15 81 25 7f 75 08 95 02 81 06 c0 09 38 95 01 81 06 09 3c 15 00 25 01 75 01 95 human interface device report descriptor (72 bytes, 3d3b) 01 b1 22 95 07 b1 01 c0 5.2 usb data report format the usb report has two data formats, depending on boot or report protocol is selected. one kind of data format is the boot protocol used in legacy environment as 4.2.1. the other kind of data format is usb report protocol format which includes z-wheel movement data in the fourth byte as 4.2.2. the z-wheel is moved forward the fourth byte data is 01h, the z-wheel is moved backward th e fourth byte data is ffh, and the z-wheel is idle the fourth byte data is 00h. 5.2.1 usb boot protocol for legacy operation byte bit symbol description 0 bl 1 = left button pressed 1 br 1 = right button pressed 1 2 ~ 7 nc reserved 2 0 - 7 x0 ~ x7 x data (d0 - d7). a positive value indicates motion to the right; a negative value indicates motion to the left. bit 0 = lsb. 3 0 - 7 y0 ~ y7 y data (d0 - d7). a positive value indicates device motion upward; a negative value indicates motion downward. bit 0 = lsb.
pixart imaging inc. PAW3501UI usb optical mouse sensor single chip a ll rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. 8 p ixart ima g in g inc. e -mail: fae_service@pixart.com.tw v2.1 april. 2008 5.2.2 usb report protocol byte bit symbol description 0 bl 1 = left button pressed 1 br 1 = right button pressed 2 bm 1 = middle button pressed 3 b4 1 = b4 button pressed 4 b5 1 = b5 button pressed 1 5 ~ 7 nc reserved 2 0 - 7 x0 ~ x7 x data (d0 - d7). a positive value indicates motion to the right; a negative value indicates motion to the left. bit 0 = lsb. 3 0 - 7 y0 ~ y7 y data (d0 - d7). a positive value indicates device motion upward; a negative value indicates motion downward. bit 0 = lsb. 4 0 - 7 z0 ~ z7 z-wheel motion data (d0 - d7). a positive value indicates device motion downward; a negative value indicates motion upward. the z0 - z7 limit value is 7. bit 0 = lsb.
pixart imaging inc. PAW3501UI usb optical mouse sensor single chip a ll rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. 9 p ixart ima g in g inc. e -mail: fae_service@pixart.com.tw v2.1 april. 2008 6. referencing application circuit 6.1 typical application for pa w3501ui with mechanical encoder c5 0.1uf rfu sw3 bl sw2 bm r9 1m vcc_5v r5 0? + c4 1uf r8 1m ensw1 encoder 1 2 3 z2 z1 com c3 0.1uf vddq vcc_5v d- d+ r2 0? vcc_5v sw1 br rfu vcc_5v note: please connect the rfu pin to usb connector shell for future use, paw3501up used the pin to switch usb or ps/2. u1 PAW3501UI 22 3 24 2 23 7 19 6 5 18 16 20 17 21 1 9 15 4 8 10 11 12 14 13 br sr test z2 rfu dt oscout bl bm oscin vss d+ vddq d- z1 b5 vdd5v irctl b4 cpi vssled led vrefa vrefb pin7(dt) pull low => 3d3b pull high => 2d2b floating => 3d5b d1 led d- r3 0? sw4 b4 sw5 b5 pin3(sr): pull low => -90 degree pull high => +90 degree floating => 0 degree x1 18.000mhz r7 0? + c1 1uf r4 0? r1 pin10(cpi) pull low => 800cpi pull high => 600cpi floating => 400cpi r6 0? vcc_5v vcc_5v vcc_5v + c2 10uf d+ j1 usb cable 1 2 3 4 5 figure 6. application circuit for PAW3501UI (mechanical encoder)
pixart imaging inc. PAW3501UI usb optical mouse sensor single chip a ll rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. 10 p ixart ima g in g inc. e -mail: fae_service@pixart.com.tw v2.1 april. 2008 6.2 typical application for paw3501u i-px with optical encoder vcc_5v r1 z1 z1 pin10(cpi) pull low => 800cpi pull high => 600cpi floating => 400cpi vddq r4 0? sw2 bm z2 + c4 1uf sw3 bl sw1 br d+ u2 pt 3 1 2 pin7(dt) pull low => 3d3b pull high => 2d2b floating => 3d5b d- d1 led vcc_5v j1 usb cable 1 2 3 4 5 c3 0.1uf r6 0? vcc_5v note: 1. please connect the rfu pin to usb connector shell for future use, paw3501up used the pin to switch usb or ps/2. 2. for resistor value selection, refer to high or low input level of z1 and z2 in the d.c. electrical characteristics table. the recommended value for r10 is 470ohm. the recommended value for r11/r12 is 5.1kohm. pin3(sr): pull low => -90 degree pull high => +90 degree floating => 0 degree x1 18.000mhz irctl + c2 10uf r9 1m r10 470 c5 0.1uf d- vcc_5v r2 0? d1 ir r8 1m r5 0? q1 2n3906 rfu r7 0? vcc_5v sw5 b5 irctl u1 PAW3501UI-px 22 3 24 2 23 7 19 6 5 18 16 20 17 21 1 9 15 4 8 10 11 12 14 13 br sr test z2 rfu dt oscout bl bm oscin vss d+ vddq d- z1 b5 vdd5v irctl b4 cpi vssled led vrefa vrefb vcc_5v rfu r11 5.1k r12 5.1k sw4 b4 z2 + c1 1uf r3 0? vcc_5v d+ figure 7. application circuit for PAW3501UI-px (optical encoder)
pixart imaging inc. PAW3501UI usb optical mouse sensor single chip a ll rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. 11 p ixart ima g in g inc. e -mail: fae_service@pixart.com.tw v2.1 april. 2008 6.3 pcb layout consideration z caps for pins 13, 14, 17 must have trace lengths less than 5mm . z the trace lengths of oscout, oscin must less than 6mm . 6.4 recommended value for r1 z radiometric intensity of led bin limits (mw/sr at 20 ma) led bin grade min. typ. max. n 14.7 17.7 p 17.7 21.2 q 21.2 25.4 note: tolerance for each bin will be 15% z r1 value (ohm), vdd = 5.0v led bin grade min. typ. max. n 51 100 p 51 100 q 51 100
pixart imaging inc. PAW3501UI usb optical mouse sensor single chip a ll rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. 12 p ixart ima g in g inc. e -mail: fae_service@pixart.com.tw v2.1 april. 2008 7. package information 7.1 package outline drawing 24 13 1 12 1 12 24 13 figure 8. package outline drawing
pixart imaging inc. PAW3501UI usb optical mouse sensor single chip a ll rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. 13 p ixart ima g in g inc. e -mail: fae_service@pixart.com.tw v2.1 april. 2008 7.2 recommended pcb mechanical cutouts and spacing 26.010 1.024 7.544 0.297 1.194 0.047 16.942 0.667 6.985 0.275 2.286 0.090 3.251 0.128 all dimensions : mm / inch 0 ref. 1.194 0.047 7.544 0.297 4.445 0.175 6.985 0.275 4.445 0.175 0 ref. 27.153 1.069 10.998 0.433 4.064 0.160 optical center 0.711 0.028 0.711 0.028 15.494 0.610 figure 9. recommended pcb m echanical cutouts and spacing
pixart imaging inc. PAW3501UI usb optical mouse sensor single chip a ll rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. 14 p ixart ima g in g inc. e -mail: fae_service@pixart.com.tw v2.1 april. 2008 8. nstl compatibility test PAW3501UI has passed the nstl compatibility test prog ram, which conducts an objective quality assurance test suite to verify correct operation, functionality, and compatibility of system products. "the nstl standard testing methodologies assessed the compatibility of PAW3501UI at the nstl/allion labs testing facility. and, it shows that it is getting along great and ope rated correctly with various software applications and add-on devices under a variety of operating systems." cited from the ntsl test report. accordingly, PAW3501UI fully meets ntsl compatibility test st andard and is able to carry the ntsl seal. 9. update history version update date v1.0 creation, preliminary 1 st version 08/18/2006 v2.0 modify application circuit for PAW3501UI-px with optical encoder (figure 7.) 07/18/2007 v2.1 content revise 04/18/2008 note: the part no. of the mouse product with prefix "pan" shall not be made, sold, offered to sell, imported or used in or into usa, canada, japan and eu. for "pan", pixart has only gained territory-limited patent license from avago. avago reserve right to take legal action against our customers who fails to comply the above term. please note that pixart will not defe nd, indemnify, or provide any assistance to our customers who fail to comply the term. if you do not agree the term, pixart will not deliver "pan" products to you.

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