HT82M22A
5-Key 3D USB+PS/2 Optical Mouse Controller
Features
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Operating voltage: 4.4V~5.25V
Single chip solution especially for USB mouse
function
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Compatible with Microsoft Windows 2000 and
5-button Wheel Mouse
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HALT function and wake-up feature reduce power
consumption
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Complete Universal Serial Bus specs V1.1
compatibility
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Plug and Play functions
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Serial Bus Interface Engine (SIE)
USB transceiver
Minimal external components
6MHz crystal oscillator for system clock
Microsoft 3D Intelli mouse and IBM PS/2 mouse
compatible
Interface compliant with ADNS-2051, ADNS-2610
and ADNS-2620
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Supports five buttons and Z-axes input
Pass WHQL, USB-IF and EMC testing
20-pin DIP package
Z-axis can support two kinds of scroller input
(optomechanical and mechanical)
General Description
HT82M22A is a Plug and Play Windows 2000 and
5-button 3D USB+PS/2 Mouse controller. The
HT82M22A can support the USB Standard Request as
well as HID Class Request version 1.1. It is compatible
with Microsoft Intelli 3D PS/2 mouse. The Z-axis can
support two kinds of scroller input, namely; mechanical
and optomechanical. It requires minimal external com-
ponents to implement 3D USB plus PS/2 mouse. All its
features combined and make up this versatile Holtek
8-bit MCU with an on-chip USB interface logic. The
USB is specified by the Universal Serial Bus Specifica-
tion V1.1.
Block Diagram
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Rev. 1.10
1
August 4, 2004