PIN NO. | SYMBOL | DESCRIPTION | FUNCTION |
1 |
VSS |
Ground |
0V (GND) |
2 |
VDD |
Power Supply For Logic Circuit |
+3.3V |
3 |
V0 |
LCD Contrast Adjustment |
|
4 |
RS or CS |
Parallel Mode: Instruction/Data Register Selection Serial Mode: Chip Select |
Parallel Mode: RS = 0 : Instruction Register RS = 1 : Data Register Serial Mode: Active-high |
5 |
R/W or SID |
Parallel Mode: Read/Write Selection Serial Mode: Data |
Parallel Mode: R/W = 0 : Register Write R/W = 1 : Register Read |
6 |
E or SCK |
Parallel Mode: Enable Signal Serial Mode: Clock |
Parallel Mode: Active-high |
7 |
DB0 |
Parallel Mode: Data Bus Serial Mode: NC |
Parallel Mode: DB0-DB7 |
8 |
DB1 |
9 |
DB2 |
10 |
DB3 |
11 |
DB4 |
12 |
DB5 |
13 |
DB6 |
14 |
DB7 |
15 |
PSB |
Serial/Parallel Selection |
PSB=0 : Serial Mode PSB=1 : 8/4Bit Parallel Bus Mode |
16 |
NC |
|
|
17 |
RST |
Reset Signal |
Active-low RSTB=0,Display Off, Display From Line 0 |
18 |
Vout |
Dual Voltage Output |
Available when VDD=+3.3V |
19 |
A |
Supply Voltage For LED+ |
+3.3V |
20 |
K |
Supply Voltage For LED- |
0V |