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  Holtek Semiconductor Electronic Components Datasheet  

HT82M28A Datasheet

3/5-Key USB Vista Tilt Optical Mouse Controller

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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)
www.DataSheet4U.com
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
· 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
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
S u s p e n s io n
C o n tro l
F IF O s ´ 2
VDD
VSS
Rev. 1.00
1 July 20, 2007


  Holtek Semiconductor Electronic Components Datasheet  

HT82M28A Datasheet

3/5-Key USB Vista Tilt Optical Mouse Controller

No Preview Available !

HT82M28A
Pin Assignment
VSS
V 33O
USBD+
USBD-
RESET
L _ T IL T
R _ T IL T
S C LK
S D IO
RB0
1 20 O S C 1
2 19 O S C 2
3 18 V D D
4 17 LE D
5 16 M
6 15 R
7 14 L
8 13 Z2
9 12 Z1
10 11 R B 1
H T82M 28A
2 0 D IP -A /S O P -A
Pin Description
www.DataSheet4U.cPoinmName I/O
Description
VSS
¾ Negative power supply, ground
V33O
O 3.3V voltage output
USBD+
I/O USB data plus, F/W auto-detect USBD+ for USB.
USBD-
I/O USB data minus, F/W auto-detect USB- for USB.
RESET
I Chip reset input, low active
SDIO
I/O Serial data for optical sensor IC SDIO
O Serial data for optical sensor IC SCLK
SCLK
DPI selection, N/C or GND(connect to a 5.1kW pull-down resistor)
I
For A2610, A2620: N/C-800dpi; GND-400dpi
For A5020: N/C-1000dpi; GND-500dpi
For P3101: N/C-800dpi; GND-1600dpi
RB0, RB1, L,
R, M, L_TILT,
R_TILT
Click button detection. Input ports with 30kW pull-high resistor.
I Input ports with pull-high resistor. These pads can function as Left, Right, Middle, RB0, RB1,
L_TILT and R_TILT button input lines.
Z1, Z2
I Z-axis input supports only Z/2 encoder scroller input.
LED
I/O Drives LED output
VDD
¾ 5V positive power supply
OSC2
O 6MHz OSC output
OSC1
I 6MHz OSC input
Absolute Maximum Ratings
Supply Voltage ..............................VSS-0.3V to VSS+6V
MCU Input Voltage.....................VSS-0.3V to VDD+0.3V
USB Input Voltage ....................VSS-0.3V to V33O+0.3V
Storage Temperature ............................-50°C to 125°C
Operating Temperature...........................-25°C to 70°C
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² 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 reliabil-
ity.
Rev. 1.00
2 July 20, 2007


Part Number HT82M28A
Description 3/5-Key USB Vista Tilt Optical Mouse Controller
Maker Holtek Semiconductor
Total Page 15 Pages
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