Holtek Semiconductor HT82M21A
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.| Part No. | HT82M21A |
|---|---|
| Datasheet | HT82M21A Download |
| Manufacturer |  Holtek Semiconductor |
| Description | 3-Key 3D USB+PS/2 Optical Mouse Controller |
| Buy | Stock & Price |
FEATURES
● Operating voltage: 4.4V~5.25V● Complete Universal Serial Bus specs V1.1
● Serial Bus Interface Engine (SIE)
● USB transceiver
● Microsoft 3D Intelli mouse and IBM PS/2 mouse w w a D . w S a t compatibility e e h U 4 t .c om HT82M21A 3-Key 3D USB+PS/2 Optical Mouse Controller
● 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 compatible and ADNS-2620
● Pass WHQL, USB-IF and EMC testing
● 18-pin DIP package
● 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
GENERAL DESCRIPTION
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.
