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HT82M98A 3d usb+ps2 mouse 1 september 11, 2000 features complete universal serial bus specs v1.0 compatibility serial bus interface engine (sie) usb transceiver microsoft 3d intelli mouse and ibm ps/2 mouse compatible supports three buttons (r, m, l) and three axes (x, y, z) input z axis can support two kinds of scroller in - put (optomechanical and mechanical) single chip solution especially for usb mouse function halt function and wake-up feature reduce power consumption plug and play functions minimal external components 6mhz crystal oscillator for system clock 18-pin dip package general description HT82M98A is a 3d mouse controller especially designed for usb and ps/2 applications. the HT82M98A can support the usb standard re - quest as well as hid class request version 1.0 draft 4. it is compatible with microsoft intelli 3d ps/2 mouse. the x/y axis photo input with built-in holtek s special dynamic photo-input resistor and z axis can support two kinds of scroller input, namely; optomechanical and mechanical. it requires minimal external com - ponents to implement 3d usb plus ps/2 mouse. it can be briefly described as a holtek 8-bit c with an on-chip usb interface logic. the usb is specified by the universal serial bus specification v1.0.
block diagram pin assignment HT82M98A 2 september 11, 2000

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pin description pin no. pin name i/o description usb interface (2 pins) 3 usbd+/ clk i/o usb data plus or ps2 clock, f/w auto-detect usbd+ for usb, clk for ps2 4 usbd data i/o usb data minus or ps2 data, f/w auto-detect usb for usb, data for ps2 general purpose i/o (9 pins) 6, 7 x1, x2 i x-axis photo input with built-in holtek s special dynamic photo in - put resistor 8, 9 y1, y2 i y-axis photo input with built-in holtek s special dynamic photo in - put resistor 10, 11 z1, z2 i z-axis input supports two kinds of scroller input; optomechanical and mechanical 12, 13, 14 l, r, m i input ports with pull-high resistor. these pads can function as left, right and middle button input lines. miscellaneous (7 pins) 1 vss negative power supply, ground 2 v33o o 3.3v voltage output 5 reset i chip reset input, low active 15 led i/o drives led output 16 vdd 5v positive power supply 17 osc2 o 6mhz osc output 18 osc1 i 6mhz osc input absolute maximum ratings supply voltage................................. 0.3v to 6v storage temperature................. 50 cto125 c c input voltage ...........v ss 0.3v to v dd +0.3v operating temperature .............. 25 cto70 c usb input voltage .......v ss 0.3v to v 33o +0.3v 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 de - vice at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. HT82M98A 3 september 11, 2000
d.c. characteristics ta=25 c symbol parameter test conditions min. typ. max. unit v dd conditions v dd operating voltage 4.5 5.5 v i dd operating current (crystal osc) 5v no load, f sys =6mhz usb mode 10 ma ps/2 mode 3 ma i stb standby current 5v no load, system halt 250 a v il1 input low voltage for i/o ports 5v 0 1.0 v v ih1 input high voltage for c i/o ports 5v 3.5 5v v il2 input low voltage (reset ) 5v 0 1.5 v v ih2 input high voltage (reset ) 5v 3.5 5v v ih3 input high voltage for usb i/o ports 3.3v 2.8 3.6 v v por power on reset v dd detection voltage 5v 3.5 3.9 v i ol1 output port sink current 5v v ol =0.5v 4 ma i oh1 output port source current 5v v ol =4.5v 4 ma i ol2 output port sink current (led) 5v v ol =4.5v 50 ma a.c. characteristics ta=25 c symbol parameter test conditions min. typ. max. unit v dd conditions f sys system clock (crystal osc) 5v 0 6000 khz t ost oscillation start-up timer period power-up or wake-up form halt 1024 t sys note: t sys =1/f sys HT82M98A 4 september 11, 2000
application circuits this application circuit is for reference only HT82M98A 5 september 11, 2000
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HT82M98A 6 september 11, 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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