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HT82M21A --
3-Key 3D USB+PS/2 Optical Mouse Controller
General Description
HT82M21A is a 3D mouse controller especially designed
for USB and PS/2 applications. The HT82M21A 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; optomechanical and mechanical. It requires minimal external components to
implement 3D USB plus PS/2 optical mouse. It can be briefly described as a Holtek 8-bit MCU with an on-chip
USB interface logic. The USB is specified by the Universal
Serial Bus Specification V1.1.
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Features
- Operating voltage: 4.4V~5.25V
- Complete Universal Serial Bus specs V1.1compatibility
- Serial Bus Interface Engine (SIE)
- USB transceiver
- Microsoft 3D Intelli mouse and IBM PS/2 mouse compatible
- Supports three buttons (R, M, L) and Z-axis input
- Z-axis can support two kinds of scroller input (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
- Interface compliant with ADNS-2051, ADNS-2610 and ADNS-2620
- Pass WHQL, USB-IF and EMC testing
- 18-pin DIP package
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