Silan
Semiconductorsꢀ
SC84510
ꢀ
PIN DESCRIPTION
Pin Name
I/O
Description
INPUT: 200kΩ pull low to VSS.
When OPT is connected to VDD, SC84510 will enter test mode. In test mode, L will
be the output of X1, while M will be the output of X2. Toggling R key can change
these output to be Y1, Y2 or Z1, Z2 respectively.
OUTPUT: 2kHz Z-axis LED-driving source.
OPT
I/O
“1” = VDD, “0” = floating
High duty is about 60µs.
OSC OUT
O
I
RC mode oscillation with 50kΩ resistor.
OSCR
CLK
DATA
R
I/O
I/O
Connect to 8042 auxiliary port CLK line.
Connect to 8042 auxiliary port DATA line.
Three key-switches inputs.
I
I
M
200kΩ resistor pull low.
L
X1
X2
Y1
Y2
Three step dynamic input impedance.
Use current comparator to measure photo-couples “ON”, or “OFF”.
Z-axis input.
Z1
Z2
Photo mode: Three steps dynamic input impedance. Current comparator input.
Key mode: 200kΩ resistor pull low. 7 levels increased by “M” key.
Voltage mode: 200kΩ resistor pull low. 7 levels voltage comparator.
Mechanical mode: 13.2kΩ resistor pull low.
Negative power.
I
VSS
VDD
Power line.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
ꢀ
Rev: 1.0
2000.12.31ꢀ
5
SILAN [ SILAN MICROELECTRONICS JOINT-STOCK ]
