HT82M28A 查看數據表（PDF） - Holtek Semiconductor
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HT82M28A Datasheet PDF : 15 Pages
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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
Pin Name 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
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