ht82m91a Holtek Semiconductor Inc., ht82m91a Datasheet - Page 2

• Manufacturer Part Number: ht82m91a
• Description: 3d Usb Mouse Semiconductor Inc
• Manufacturer: Holtek Semiconductor Inc.

Pin Assignment
Pin Description
USB Interface (2 pins)
3
4
General purpose I/O (9 pins)
6, 7
8, 9
10, 11
12, 13,
14
Miscellaneous (7 pins)
1
2
5
15
16
17
18
Pin No.
USBD+
USBD-
X1, X2
Y1, Y2
Z1, Z2
L, R, M
VSS
V33O
RESET
LED
VDD
OSC2
OSC1
Pin Name
I/O
I/O USB data plus
I/O USB data minus
I/O Drives LED output
¾
¾
O
O
I
I
I
I
I
I
X-axis photo input with built-in Holtek's special dynamic photo in-
put resistor
Y-axis photo input with built-in Holtek's special dynamic photo in-
put resistor
Z-axis input supports two kinds of scroller input; optomechanical
and mechanical
These pins are input port with pull-high resistor. These pads can
function as Left, Right and Middle button input lines.
Negative power supply, ground
3.3V voltage output
Chip reset input, low active
5V positive power supply
6MHz OSC output
6MHz OSC input
-
H T 8 2 M 9 1 A
1 8 D I P
2
Description
January 28, 2000
HT82M91A