HT82M21A

· Operating voltage: 4.4V~5.25V
· Complete Universal Serial Bus specs V1.1 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 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

Supply Voltage .............................V_SS-0.3V to V_SS+6V
MCU Input Voltage.....................V_SS-0.3V to V_DD+0.3V
USB Input Voltage ...................V_SS-0.3V to V_33O+0.3V
Storage Temperature ...........................-50 to 125
Operating Temperature...........................-25 to 70

Note: These are stress ratings only. Stresses exceeding the range specified under "Absolute Maximum Ratings" may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.

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.