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HT82M33A 3d mouse controller pin assignment 1 august 30, 2000 feature microsoft intelli mouse compatible ibm ps/2 mouse and microsoft serial mouse compatible support rolling buttons in serial and ps/2 mouse mode supports three buttons (rb, ro, lb) and three axis (x, y, z) inputs fit plug and play com port device specification z axis can support two kinds of scroller in - put (optomechanical and mechanical) 2mhz operating frequency with external resonator 18-pin dip package general description the HT82M33A is a plug and play 2-in-1 (se - rial and ps/2) 3d mouse controller. it is com - patible with microsoft intelli mouse. the z axis can support two kinds of scroller input, namely; optomechanical and mechanical.

pin description pin no. pin name i/o description 1,2 z1, z2 i z axis input : supports two kinds of scroller input, optomechanical and mechanical 3 reset i reset input : resets internal circuit by input low, normal is con - nected to high by internal pull-high resistor (120k ). 4 mode i ms or ps/2 mode selection : low for ps/2 mouse, high for ms mouse. the ms pnp mouse id code sure will appear when this pin rise from low to high. normal is connected to low by internal pull-low resistor (60k ). the mode input transition voltage is 2.0v. 5 osci i oscillator in : connect to 2mhz crystal or resonator 6 osco o oscillator out : connect to 2mhz crystal or resonator 7 clock i/o clock i/o : ps/2 mouse clock line. nmos open drain output with 7.5k pull-high resistor. 8 data i/o data/rxd i/o ps/2 mouse data line or ms mouse rxd output. nmos open drain output with 7.5k pull-high resistor. 9 vss negative power supply, ground 10~12 rb, ro, lb i right button : normal pull-high (45k ), press connect to low. rolling button : normal pull-high (45k ), press connect to low. left button : normal pull-high (45k ), press connect to low. 13~16 x1, x2, y1, y2 i x/y axis input : auto level detecting input. any signal over 0.6v v pp is acceptable but the +v p cannot be over 2.5v 17 test i ic test pin : with built-in pull-low resistor. in normal operation this is connected to vss or floating. while the pin is connected to vdd, this will provide the h/w test. the chip will accord the state of the rb pin, to switch the x1/y1 and x2/y2 via the pin ro and lb output. 18 vdd positive power supply absolute maximum ratings supply voltage.............................. 0.3v to 6.5v storage temperature................. 50 cto125 c input voltage .................v ss 0.3v to v dd +0.3v operating temperature .............. 25 cto70 c note: these are stress ratings only. stresses exceeding the range specified under absolute maxi - mum ratings may cause substantial damage to the device. functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged expo - sure to extreme conditions may affect device reliability. HT82M33A 2 august 30, 2000
d.c. characteristics ta=25 c symbol parameter test conditions min. typ. max. unit v dd conditions v dd operating voltage 4.5 5.0 5.5 v i sd standby voltage 5v reset=0v, no load 1.5 ma i dd operating current 5v freq=2mhz, reset=5v, no load 2.2 3 ma v il input low voltage (rb, ro, lb, test) 5v 0 1.5 v v ih input high voltage (rb, ro, lb, test) 5v 3.5 5.0 v v il1 input low voltage (z1, z2) 5v 0 1.0 v v ih1 input high voltage (z1, z2) 5v 1.2 5.0 v v il2 input low voltage (clock, data) 5v 0 1.2 v v ih2 input high voltage (clock, data) 5v 2.1 5.0 v v il3 input low voltage (reset) 5v 0 1.8 v v ih3 input high voltage (reset) 5v 3.3 5.0 v i ol output sink current (clock, data) 5v v il =0.5v 6 ma i oh output source current (clock, data) 5v v ih =4.5v 2 ma r l pull-low resistor (z1, z2) 5v v ih =5v, v ss =0v 600 k r l1 pull-low resistor (test) 5v v ih =5v, v ss =0v 10 17 30 k r l2 pull-low resistor (rb, ro, lb) 5v v ih =5v, v ss =0v 33 45 56 k r l3 pull-low resistor (mode) 5v v ih =5v, v ss =0v 48 60 72 k r h pull-high resistor (clock, data) 5v v il =0v 5 7.5 10 k r h1 pull-high resistor (reset) 5v v il =0v 100 125 150 k HT82M33A 3 august 30, 2000
a.c. characteristics ta=25 c symbol parameter test conditions min. typ. max. unit v dd conditions f p x,y input frequency 5v 8.2 khz f n x,y operating frequency 5v 8 khz t kd key debounce 5v 52 ms t ms transmission time 5v serial mouse mode 33 ms t s start bit time 5v serial mouse mode 0.85 ms t d data bit time 5v serial mouse mode 0.82 ms t p stop bit time 5v serial mouse mode 0.82 ms t rd id code delay 5v serial mouse mode 15 ms t r rising edge crossed width 5v 50 s t f falling edge crossed width 5v 50 s t reset reset low pulse width 5v 1 s f osc system clock 5v crystal oscillator 2.0 mhz HT82M33A 4 august 30, 2000
HT82M33A 5 august 30, 2000 functional description serial mouse data format of 3d serial mouse 1200 bps, n, 7, 1, single direction bit no. 6 5 4 3 2 1 0 1st word 1 l r y7 y6 x7 x6 2nd word 0 x5 x4 x3 x2 x1 x0 3rd word 0 y5 y4 y3 y2 y1 y0 4th word 0 0 ro z3 z2 z1 z0 note: x7~x0: 128 HT82M33A 6 august 30, 2000 encourage the plug and play mouse id ps/2 mouse ps/2 status byte bit 7:reserved 6: 0=stream mode, 1=remote mode 5: 0=disabled, 1=enabled 4: 0=scaling 1:1, 1= scaling 2:1 3: 1=wrap mode, 0=stream or remote (different from ibm spec.) 2: 1= left button pressed 1: 1= middle button pressed 0: 1= right button pressed standard ps/2 data format variable rps, o, 8, 1, bidirectional, synchronous bit no. 7 6 5 4 3 2 1 0 1st word yv xv ys xs 1 m r l 2nd word x7 x6 x5 x4 x3 x2 x1 x0 3rd word y7 y6 y5 y4 y3 y2 y1 y0 data format for 3d ps/2 variable rps, o, 8, 1, bidirectional, synchronous bitno.7 6 543210 1st word yv xv ys xs 1 ro r l 2nd word x7 x6 x5 x4 x3 x2 x1 x0 3rd word y7 y6 y5 y4 y3 y2 y1 y0 4th word z7 z6 z5 z4 z3 z2 z1 z0 thex/ydatareportis9-bit2 scomplement thezdatareportis8-bit2 scomplement xmoverightispositive,moveleftisnegative ymoveupispositive,movedownisnegative zrollingtowarduserispositive,elseisnegative buttonstatus:1=pressed,0=released mouse mode changes between standard and 3d ps/2 mode sending the commands in the following se - quence will set the mouse to 3d ps/2 mode. command response from mouse f3h fah c8h fah f3h fah 64h fah f3h fah 50h fah f2h fah, 03h
any time the pc sends a reset ffh com - mand to the mouse, it will reset the mouse to standard ps/2 mode.
after power on reset is initiated, the mouse is set to standard ps/2 mode. ! "# $# %&'!
timing diagrams x,y,z input x,y axis photo-coupler crossed width z axis counting serial mouse word structure key output bit structure HT82M33A 7 august 30, 2000 () () % & % * " " " " " " " " %+ , -& % , -& $ , -& & , -& '. /$0&'1'!' % % ! %! 2 /% $ - 3 #
encourage the plug and play id pnp com enumerator timing HT82M33A 8 august 30, 2000 % & #$# #$# % & " 4 $%'&5!1 %- +-1 +/6+ , +/1' , !/%/$6 *-& 4 $%'&5!1 *-& '7%'&$!1 '5/8' %- 9-, '& -, $ -& '%'8% %+' 9-&% %!%' 4 : '$; '&!%-& /6$!%;&' '1!. 4 ! 7 / ; /$ %' &5 ! 1 %- , ! /% *- & ! $ 0- & */& % &' 8 ' /5 ' 8 + ! &! 8 %' & 4 # $# 9'&08+!&!8%'& %/ '-;% ( $-% +-, $ ) 4 # $# $# $# %/ '-;% 3 '8-$ ( $-% +-, $ ) 4 /8-$$'8% 5'&/*/8!%/-$ %/ '-;% '8-$ ( $-% +-, $ ) " " " " "
ps/2 mouse data output data input HT82M33A 9 august 30, 2000 ( ) ( ) ( ) ( ) ( ) ( ) % $ %+ %+ %!&% /% /% # !&/%. /% %-9 /% ( ) ( ) ( ) ( ) %&!$/%/-$ %- %+' *!11/$6 '6' -* //$6 '6' -* %- %&!$/%/-$ ;&!%/-$ -* /$!8%/5' ;&!%/-$ -* !8%/5' /$/; %/' %- = /$+/2/% !*%'& 81-8< ! 7 / ; %/ ' %- = /$ + /2 /% ! *%' & 8 1- 8 < %- ' $ ; &' = -' $-% %!&% !$-%+'& %&!$ //-$ 0 '8 0 : '8 0 '8 0 '8 > '8 ? '8 ( ) ( ) ( ) 0 $+/2/% $ %+ %+ %!&% /% /% # !&/%. /% %-9 /%
( ) ( ) ( ) ;&!%/-$ -* 1-, ;&!%/-$ -* +/6+
/ ' *&- 1-, %- +/6+ %&!$/%/-$ %- %/ ' , +'$ = !91' 1/$' % ( )
%+ ( ) ( ) 0 '8 0 '8 0 '8
application circuits HT82M33A 3d 2-in-1 mouse (this application circuit is for reference only) note: clock & data is internal pull-high 10k . osci & osco are build i nr&c. z1 & z2 is internal pull-low 250k . HT82M33A 10 august 30, 2000
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HT82M33A 3d 2-in-1 mouse (this application circuit is for reference only) note: clock & data is internal pull-high 10k . osci & osco are build i nr&c. z1 & z2 is internal pull-low 250k . HT82M33A 11 august 30, 2000
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HT82M33A 3d ps2 mouse (this application circuit is for reference only) HT82M33A 12 august 30, 2000
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HT82M33A 3d ps2 mouse (this application circuit is for reference only) HT82M33A 13 august 30, 2000
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HT82M33A 14 august 30, 2000 copyright 2000 by holtek semiconductor inc. the information appearing in this data sheet is believed to be accurate at the time of publication. however, holtek assumes no responsibility arising from the use of the specifications described. the applications mentioned herein are used solely for the purpose of illustration and holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may pres - ent a risk to human life due to malfunction or otherwise. holtek reserves the right to alter its products without prior notification. for the most up-to-date information, please visit our web site at http://www.holtek.com.tw. holtek semiconductor inc. (headquarters) no.3 creation rd. ii, science-based industrial park, hsinchu, taiwan, r.o.c. tel: 886-3-563-1999 fax: 886-3-563-1189 holtek semiconductor inc. (taipei office) 5f, no.576, sec.7 chung hsiao e. rd., taipei, taiwan, r.o.c. tel: 886-2-2782-9635 fax: 886-2-2782-9636 fax: 886-2-2782-7128 (international sales hotline) holtek semiconductor (hong kong) ltd. rm.711, tower 2, cheung sha wan plaza, 833 cheung sha wan rd., kowloon, hong kong tel: 852-2-745-8288 fax: 852-2-742-8657 holmate technology corp. 48531 warm spring boulevard, suite 413, fremont, ca 94539 tel: 510-252-9880 fax: 510-252-9885

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