ht82m28a Holtek Semiconductor Inc., ht82m28a Datasheet - Page 2

• Manufacturer Part Number: ht82m28a
• Description: Ht82m28a -- 3/5-key Usb Vista Tilt Optical Mouse Controller
• Manufacturer: Holtek Semiconductor Inc.

Pin Assignment
Pin Description
Absolute Maximum Ratings
Supply Voltage ..............................V
MCU Input Voltage.....................V
USB Input Voltage ....................V
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may
Rev. 1.20
VSS
V33O
USBD+
USBD
RESET
SDIO
SCLK
RB0, RB1, L,
R, M, L_TILT,
R_TILT
Z1, Z2
LED
VDD
OSC2
OSC1
Pin Name
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.
I/O
I/O
I/O
I/O
I/O
O
O
O
I
I
I
I
I
Negative power supply, ground
3.3V voltage output
USB data plus, F/W auto-detect USBD+ for USB.
USB data minus, F/W auto-detect USB for USB.
Chip reset input, low active
Serial data for optical sensor IC SDIO
Serial data for optical sensor IC SCLK
DPI selection, N/C or GND(connect to a 5.1k pull-down resistor)
For A2610, A2620: N/C-800dpi; GND-400dpi
For A5020/A5050: N/C-1000dpi; GND-500dpi
For P3101: N/C-800dpi; GND-1600dpi
Click button detection. Input ports with 30k
Input ports with pull-high resistor. These pads can function as Left, Right, Middle, RB0, RB1,
L_TILT and R_TILT button input lines.
Z-axis input supports only Z/2 encoder scroller input.
Drives LED output
5V positive power supply
6MHz OSC output
6MHz OSC input
SS
SS
SS
0.3V to V
0.3V to V
0.3V to V
33O
DD
SS
+0.3V
+0.3V
+6V
2
Storage Temperature ............................ 50 C to 125 C
Operating Temperature........................... 25 C to 70 C
Description
pull-high resistor.
HT82M28A
April 15, 2008