HT82M28A Datasheet, PDF (1/15 Pages) Holtek Semiconductor Inc – 3/5-Key USB Vista Tilt Optical Mouse Controller

HT82M28A
3/5-Key USB Vista Tilt Optical Mouse Controller
Features
· Operating voltage: 4.4V~5.25V
· Compatible with Microsoft Windows 2000 and
5-button Wheel Mouse
· Supports 5/7 buttons and Z-axis input
· Z-axis can support only encoder Z/2 scroller input
· Complete Universal Serial Bus specs V2.0 compati-
bility
· Vista tilt mouse protocol supported
· 3 key or 5 key mode can be selected by circuit
· DPI can be selected high or low by circuit
· Tilt or Non-tilt protocol can be selected by circuit
· Serial Bus Interface Engine (SIE)
· USB transceiver
· Single chip solution especially for USB mouse func-
tion
· 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 A2610, A2620, A5020, and
P3101
· Pass USB-IF and EMC testing
· 20-pin DIP/SOP package
General Description
HT82M28A is a Plug and Play 3D USB Mouse controller.
The HT82M28A can support the USB Standard Request
as well as HID Class Request version 1.1. The Z-axis
can support only Z/2 encoder scroller input. It requires
minimal external components to implement 3D and Win-
dows Vista 7 key USB 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 Specification V2.0.
The USB product ID of 5 key mode is 2083H, and the
USB product ID of 3 key mode is 2082H.
Block Diagram
USBD+
USBD-
V 33O
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
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
O SC1
O SC2
C lo c k
G e n e ra to r
RC
RESET
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. 1.00
1
July 20, 2007