ACM4004H SERIES CHARACTER MODULE VER2.0
5.0 BLOCK DIAGRAM
14. Vdd
13. Vss
12. Vo
11. RS
10. R/W
U1
SEG1- 40
40
U1
U3
SEGMENT
U4
SEGMENT
80
80
U 1 & U2
COM 16
16
8. DB0
8
~
1. DB7
LCD 40X4
COM 16
U2
40
80
SEGMENT
16
80
SEGMENT
9. E1
SEG1- 40
15. E2
U2
U5
U6
17/+ BL+
18/- BL-
LED BACKLIGHT
6.0 PIN ASSIGNMENT
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Symbol
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
E1
R/W
RS
Vo
Vss
Vdd
E2
NC
BL+
BL-
Function
Data bit 7
Data bit6
Data bit5
Data bit4
Data bit3
Data bit2
Data bit1
Data bit0
U1 enable
Read / Write
Register select
LCD contrast adjust
Ground
+5V
U2 enable
-
Power Supply for BL+
Power Supply for BL-
DISPLAYTRONIC
XIAMEN ZETTLER ELECTRONICS CO., LTD.
6
ZETTLER [ ZETTLER ELECTRONICS ]
