Datasheet

DEM 16216 SYH-PY Product Specification
VERSION: 4.1.2 PAGE: 4
4. BLOCK DIAGRAM
VSS
VDD
V0
RS
R/ W
E
DB 0
~
DB 7
ST7066U-0A
COM1~16
L CD P ANE L
2Li neX16Char act er s
SEG0~4
0
SEG41~8
0
ST7065C
B/ L
A
K
5. PIN ASSIGNMENT
Pin No. Symbol
Function
1 VSS Ground terminal of module
2 VDD Supply terminal of module 5.0 V
3 V0 Power Supply for Liquid crystal Drive
4 RS
Register select
RS = 0 (Instruction register)
RS = 1 (Data register)
5 R/W
Read /Write
R/W = 1 (Read)
R/W = 0 (Write)
6 E
Start enable signal to read or write the data
7 DB0
8 DB1
9 DB2
10 DB3
11 DB4
12 DB5
13 DB6
14 DB7
Bi-directional data bus, data transfer is performed once, thru DB0 to
DB7, in the case of interface data. Length is 8-bits; and twice, thru DB4
to DB7 in the case of interface data length is 4-bits. Upper four bits first
then lower four bits.
15
LED – (K)
16
LED + (A)
Please also refer to 6.1 PCB drawing and description.