UPD16431A NEC, UPD16431A Datasheet - Page 19

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

(3) 1/4 duty (1/3 bias)
SEG
SEG
1
1
-COM
-COM
COM
COM
COM
COM
SEG
SEG
1
2
3
4
1
9
1
2
-1/3V
-1/2V
-2/3V
-1/3V
-1/2V
-2/3V
2/3V
1/2V
1/3V
2/3V
1/2V
1/3V
-V
-V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LC1
LC2
LC3
LC1
LC2
LC3
LC1
LC2
LC3
LC1
LC2
LC3
LC1
LC2
LC3
LC1
LC2
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LC3
EE
EE
EE
EE
EE
EE
0
0
K
*
0
0
*
K
1
1
K
*
2
2
*
K
3
3
K
*
0
0
*
K
1
*: key scan period
PD16431A
(16/fc)
19