UPD16431A NEC, UPD16431A Datasheet - Page 23

• Manufacturer Part Number: UPD16431A
• Description: 1/2/ 1/3/ 1/4-DUTY LCD CONTROLLER/DRIVER
• Manufacturer: NEC

SERIAL COMMUNICATION FORMAT
(1) Receive (command/data write)
(2) Transmit (command/data read)
Note Because the DATA pin is an N-ch open-drain output pin, be sure to connect an external pull-up
DATA
SCK
STB
DATA
resistor to this pin (1 k
SCK
STB
1
1
b7
7
2
Data read command set
6
to 10 k ).
2
3
b6
5
3
6
b5
2
7
1
8
0
Wait time t
1 s
6
b2
WAIT
1
7
b1
7
2
6
3
8
Data read
b0
5
4
If data continues
4
5
PD16431A
3
6
23