HT82M980A Datasheet, PDF (1/6 Pages) Holtek Semiconductor Inc – 5-Key 3D WIN2000 USB+PS/2 Mouse Controller

HT82M980A
5-Key 3D WIN2000 USB+PS/2 Mouse Controller
Features
· Operating voltage: 4.4V~5.25V
· Compatible with Microsoft Windows 2000 and
5-button Wheel Mouse
· 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 five buttons and three axes 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
· 20-pin DIP package
General Description
HT82M980A is a Plug and Play Windows 2000 and
5-button 3D USB+PS/2 Mouse controller. The
HT82M980A 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 X/Y axis photo
input with built-in Holtek¢s special dynamic photo-input
resistor and Z axis can support two kinds of scroller in-
Block Diagram
put, namely; mechanical and optomechanical. It re-
quires minimal external components 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 Univer-
sal Serial Bus Specification V1.1.
USBD+
USBD-
V 33O
O SC1
O SC2
USB
T r a n s c e iv e r
USB
R e c e iv e r
USB
T r a n s m itte r
V o lta g e
R e g u la to r
C lo c k
G e n e ra to r
RC
RESET
R e g is te r
S et
U S B S e r ia l
In te r fa c e E n g in e
(S IE )
and
C o n tro l
L o g ic
H o lte k
8 - b it
M ic r o c o n tr o lle r
M a in
S ta te m a c h in e
F IF O s ´ 2
S u s p e n s io n
VDD
C o n tro l
VSS
Rev. 1.40
1
February 10, 2003