HT82M98A
3D USB+PS2 Mouse
1 June 14, 2000
Features
c183
Complete Universal Serial Bus specs V1.0
compatibility
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Serial Bus Interface Engine (SIE)
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USB transceiver
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Microsoft 3D Intelli mouse and IBM PS/2
mouse compatible
c183
Supports three buttons (R, M, L) and three
axes (X, Y, Z) input
c183
Z axis can support two kinds of scroller in-
put (optomechanical and mechanical)
c183
Single chip solution especially for USB
mouse function
c183
Halt function and wake-up feature reduce
power consumption
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Plug and Play functions
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Minimal external components
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6MHz crystal oscillator for system clock
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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 Holtekc162s 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 c109C with an on-chip USB interface logic.
The USB is specified by the Universal Serial
Bus Specification V1.0.