Pin
No.
Pin Name
Function
17 SCL
SCL pin for I2C bus.
18 Address SW
Slave address switch pin.
When this pin is connected to
VCC (GND), used for DC/DDH
(D8/D9H); when left open,
DA/DBH.
Interface Circuit
8
17
20 kΩ
SCL
1 kΩ
18
5
8
7.5 V
1.5 V
5
TA1318N
Input Signal/Output Signal
DC/DD
9V
7.5 V
DA/DB
D8/D9
1.5 V
0V
9
2003-02-19