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SC83702 Datasheet

  • SC83702

  • ALL IN ONE MOUSE CONTROLLER

  • 10頁(yè)

  • ETC

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Silan
Semiconductors
ALL IN ONE MOUSE CONTROLLER
DESCRIPTION
The SC83702 Mouse Controller is specially designed to control
mouse device. This single chip can interface three key-switches and
four photo-couple direct to RS-232C. The SC83702 does not need
any external power supply, so the mouse can go without a power
line. It is versatile with both microsoft and mouse system.
Debouncing circuit were provided to prevent false entry and to
improve the accuracy. In 1200 baud rate non-auto speed with 200
DPI wheels and photo-couples, the scanning is 650mm/sec without
missing a dot in microsoft mode, and the scanning speed can up to
770mm/sec in mouse system mode.
SC83702
SOP-16
DIP-16
FEATURES
*Built-in two zener diode between V
DD
and V
SS
, RTS and V
DD
*Built-in noise immunity circuit
*CMOS DIP 16 pins package&SOP 16 pins package
*Low power dissipation
*Use 32.768KHz crystal or 3.58MHz resonator
*Oscillator circuits on-chip
*Serial output in 1200 baud rate
*Can be powered directly from RS-232C
*Can drive directly to RS-232C
*Three key-switches and four photo-couples inputs
*Both key-in and key-release debounce interval 13ms
*Through three key-switches input,
SC83702 can exert seven different output
*The sampling rate of motion detector is
65KHz
APPLICATIONS
*Optical mouse or pen-mouse
*Mechanical mouse or pen-mouse
*Optomechanical mouse or pen-mouse
*Mechanical track ball
*Optomechanical track ball
PIN CONFIGURATIONS
RS
MS
OSCI
OSCO
RTS
RXD
VSS
R
1
2
3
4
5
6
7
8
SC83702A
16
15
14
13
12
11
10
9
VDD
OPT
Y2
Y1
X2
X1
L
M
RS
OPT
MS
OSCI
OSCO
RTS
RXD
VSS
1
2
3
4
5
6
7
8
SC83702B
16
15
14
13
12
11
10
9
VDD
Y2
Y1
X2
X1
L
M
R
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
1

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