Datasheet

DEM 20485 SYH-LY-CYR22 Product Specification

Version:1 PAGE:

5. PIN ASSIGNMENT

Pin No. Symbol Function

1 VSS Ground terminal of module.

2 VDD Power 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-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) Please also refer to 6.1 PCB drawing and description.

16 LED + (A) Please also refer to 6.1 PCB drawing and description.

6. PCB DRAWING AND DESCRIPTION

Note: The part no. DEM20485CYR22 is printed on the PCB.