Pin no.
Symbol
Function
1
VSS
Ground
2
VDD
Supply voltage for logic circuit
3
V0
Supply voltage for VLCD
4
D/I
Selects register data “H”or instruction “L”
5
R/W
Use as read/ write select input
6
E
Use as read/ write enable input
7
DB0
Display data signal
8
DB1
9
DB2
10
DB3
11
DB4
12
DB5
13
DB6
14
DB7
15
CS1
Chip select for driver 1 (Segment 0~63)
16
CS2
Chip select for driver 2 (Segment 64~127)
17
RST
Reset
18
VOUT
Negative voltage supply (-5V Output from internal DC/DC Converter)
19
LED+
Anode
20
LED -
Cathode