Datasheet

DEM 20488 FGH-PW Product Specification
Version:8 Page: 4
5. PIN ASSIGNMENT
Pin No. Symbol Function
1 VSS Ground (0V)
2 V
DD
Power supply(V
DD
>V
SS
)
3 V
0
Operating voltage for LCD
4 RS
Select registers. 0: Instruction register (for write) busy flag: address counter (for
read); 1: Data register (for write and read)
5 R/W Select read or write. 0: Write mode; 1: Read mode
6 E Start enable signal to read or write the data
7~10 DB0~DB3
Four low order bi-directional there-state data bus lines. Use for data transfer
between the MPU and the LCD module. These four are not used during 4-
b
it
operation.
11~14 DB4~DB7
Four high order bi-directional there-state data bus lines. Used for data transfer
between the MPU and the LCD module. DB7 can be used as a busy flag.
15 LED(-) Please refer to 6-2-1
16 LED(+) Please refer to 6-2-1
6. PCB DRAWING AND DESCRIPTION
6.1 PCB DRAWING