Datasheet

DEM 16213 SYH Product Specification

Version: 1.1.1 PAGE: 4

4. BLOCK DIAGRAM

VSS

VDD

R/ W

DB 0

DB 7

ST7066U-0A

COM1~16

L CD PANEL

2Li neX16Char act er s

SEG0~40

SEG41~80

ST7065C

5. PIN ASSIGNMENT

Pin No. Symbol Function

1 VSS Ground terminal of module.

2 VDD Supply terminal of module 5.0V.

3 V0 Power Supply for liquid crystal drive.

4 RS

RS = 0…Instruction register

RS = 1…Data register

5 R/W

Read /Write

R/W = 1…Read

R/W = 0…Write

6 E Enable

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-

its; and twice,

thru DB4 to DB7 in the case of interface data length is 4-

its.

Upper four bits first then lower four bits.

15 NC

16 NC

No Connect