Datasheet

DEM 20232 SYH-LY Product Specification

Version: 3.1.0 PAGE: 4

5. PIN ASSIGNMENT

Pin No. Symbol Function

1 VSS Ground

2 VDD Power supply

3 V0 Power Supply for LCD

4 RS Select Display Data("H") or Instructions("L")

5 R/W Read or Write Select Signal

6 E Read/Write Enable Signal

7 DB0

8 DB1

9 DB2

10 DB3

11 DB4

12 DB5

13 DB6

14 DB7

Display Data Signal

15 LED – (K) Please also refer to 6. PCB drawing and description.

16 LED + (A) Please also refer to 6. PCB drawing and description.

6. PCB DRAWING AND DESCRIPTION

Note:The part no. DEM20232 is printed on the PCB.

DESCRIPTION:

6-1-1.The polarity of the pin 15 and the pin 16

LED Polarity

symbol

state

J3,J5 J2,J4

15 Pin 16 Pin

J2,J4 Each solder-bridge Each open Each Closed Cathode Anode

J3,J5 Each solder-bridge Each Closed Each open Anode Cathode

6-1-2.The metal-bezel should be on ground when the J1 is solder-Bridge.

6-1-3.The LED resistor should be bridged when the J6 is solder-Bridge.

6-1-4.The R7 and the R8 are the LED resistor. R7=R8=5.6ohm