Home Products Character LCD WH2004G

20x4 Character LCD Display

Model No. WH2004G

►Character LCD 20x4
►5x8 dots includes cursor
►IC: RW1063
►+5V power supply (Also available for +3V)
►Negative voltage option is only for the +3V power supply
►1/16 duty cycle
►LED can be driven by PIN1, PIN2, PIN15, PIN16 or A and K
►Interface : WH2004G - 6800, WH2004G1 - SPI, WH2004G2 - I2C


This 20x4 Character LCD Display is built-in with RW1063 controller IC which are 6800, 4 line SPI or I2C interface options. The WH2004G 20x4 LCD Display have the same AA size and pin assignment as existing WH2004A and WH2004B character LCD modules but with smaller outline and VA size.
Below are the available series model numbers --

  • WH2004G - 6800 interface
  • WH2004G1 - 4 line SPI interface
  • WH2004G2 - I2C interface


Winstar WH2004G - 20x4 Character LCD Display, 20x4 LCD Display, 2004 LCD Display
Data source ref:WH2004G-TFH-JW#


LCD 20x4 Datasheet

Interface Pin Function

Pin No. Symbol Level Description
1 VSS 0V Ground
2 VDD 5.0V Supply Voltage for logic
3 VO (Variable) Operating voltage for LCD
4 RS H/L H: DATA, L: Instruction code
5 R/W H/L H: Read  L: Write
6 E H,H→L Chip enable signal
7 DB0 H/L Data bus line
8 DB1 H/L Data bus line
9 DB2 H/L Data bus line
10 DB3 H/L Data bus line
11 DB4 H/L Data bus line
12 DB5 H/L Data bus line
13 DB6 H/L Data bus line
14 DB7 H/L Data bus line
15 A Power supply for B/L(+)
16 K Power supply for B/L(-)

Mechanical Data

Item Dimension Unit
Number of Characters 20 Characters x 4 Lines
Module dimension 87.0 x 58.0 x 13.6 (MAX) mm
View area 74.4 x 24.8 mm
Active area 70.4 x 20.8 mm
Dot size 0.55 x 0.55 mm
Dot pitch 0.60 x 0.60 mm
Character size 2..95 x 4.75 mm
Character pitch 3.55 x 5.35 mm
Duty 1/16
Backlight Type LED
IC RW1063
Interface 6800

Absolute Maximum Ratings

Item Symbol Min Typ Max Unit
Operating Temperature TOP -20 +70
Storage Temperature TST -30 +80
Input Voltage VIN -0.3 VDD+0.3 V
Supply Voltage For Logic VDD-VSS -0.3 5.5 V
Supply Voltage For LCD VDD-Vo VSS-0.3 VSS+7.0 V

Electrical Characteristics

Item Symbol Condition Min Typ Max Unit
Supply Voltage For Logic VDD-VSS 4.5 5.0 5.5 V
Supply Voltage For LCD VDD-V0 Ta=-20℃



Input High Volt. VIH 2.5 VDD V
Input Low Volt. VIL -0.3 0.6 V
Output High Volt. VOH 3.9 VDD V
Output Low Volt. VOL 0.4 V
Supply Current IDD VDD=5.0V 1.0 mA

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