JHB4004A Datasheet, PDF (7/23 Pages) Jewel Hill Electronic – The JHB4004A is a 40C x 4L Character LCD module. It has a STN panel composed of 200 segments and 32 commons. The LCM can be easily accessed by micro-controller via parallel interface.

JEWEL HILL ELECTRONIC CO.,LTD.
7. MODULE FUNCTION DESCRIPTION
7.1. PIN DESCRIPTION
Pin No. Symbol
Description
1
DB7
2
DB6
3
DB5
4
DB4
8-bit bi-directional data bus
5
DB3
6
DB2
7
DB1
8
DB0
9
E1 Read/write Enable signal input pin
10
R/W Read/write selection signal, ”H”: Read; ”L”: Write
11
RS Data/Command register selection; “H”: Data; “L”: Command
12
VO LCD driver voltage regulation terminal
13
VSS Power supply for Ground (0V)
14
VDD Power supply for positive (+5V)
15
E2 Read/write Enable signal input pin
16
NC Note Connected
17
LED+ Power supply voltage for backlight positive
18
LED- Power supply voltage for backlight negative
JHB4004A
VER: 4.0
-6-
Issue date: 2009/12/03