ht82m33a Holtek Semiconductor Inc., ht82m33a Datasheet - Page 2

• Manufacturer Part Number: ht82m33a
• Description: 3d Mouse Controller
• Manufacturer: Holtek Semiconductor Inc.

Pin Description
Absolute Maximum Ratings
Supply Voltage ..............................–0.3V to 6.5V
Input Voltage................. V
Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maxi-
Pin No.
1,2
3
4
5
6
7
8
9
10~12
13~16
17
18
mum Ratings” 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 reliability.
Z1, Z2
RESET
MODE
OSCI
OSCO
CLOCK
DATA
VSS
RB, Ro, LB
X1, X2,
Y1, Y2
TEST
VDD
Pin Name
SS
I/O
I/O
I/O
O
I
I
I
I
I
I
I
I
I
–0.3V to V
“Z axis input”: Supports two kinds of scroller input, optomechanical
and mechanical
“Reset input”: Resets internal circuit by input low, normal is
connected to high by internal pull-high resistor (120k ).
“MS or PS/2 mode selection”: Low for PS/2 mouse, high for MS
mouse. The MS PnP mouse ID code sure will appear when this pin
rise from low to high. Normal is connected to low by internal
pull-low resistor (60k ). The mode input transition voltage is 2.0V.
“Oscillator in”: Connect to 2MHz crystal or resonator
“Oscillator out”: Connect to 2MHz crystal or resonator
“CLOCK I/O”: PS/2 mouse CLOCK line. NMOS open drain output
with 7.5k pull-high resistor.
“DATA/RXD I/O” PS/2 mouse DATA line or MS mouse RXD output.
NMOS open drain output with 7.5k pull-high resistor.
Negative power pin
“Right Button”: Normal pull-high (45k ), press connect to low.
“Rolling Button” : Normal pull-high (45k ), press connect to low.
“Left Button”: Normal pull-high (45k ), press connect to low.
“X/Y axis input”: Auto level detecting input. Any signal over 0.6V
V
“IC test pin”: with built-in pull-low resistor. In normal operation
this is connected to VSS or floating. While the pin is connected to
VDD, this will provide the H/W test. The chip will accord the state
of the RB pin, to switch the X1/Y1 and X2/Y2 via the PIN Ro and
LB output.
Positive power pin.
PP
is acceptable but the +V
DD
+0.3V
2
Operating Temperature............... –25 C to 70 C
Storage Temperature ................. –50 C to 125 C
Description
P
cannot be over 2.5V
HT82M33A
3rd Mar ’99