Home Products Character LCD WH4002A

Character Display LCD 40x2, 40x2 LCD Display

Model No. WH4002A

►Character Display LCD 40x2
►5x8 dots includes cursor
►Bulit-in controller (ST7066 or Equivalent)
►+5V power supply (Also available for +3V)
►Negative voltage optional for +3V power supply
►1/16 duty cycle
►LED can be driven by PIN1, PIN2, PIN15, PIN16 or A and K
►Interface : 6800, option SPI/I2C (RW1063 IC)


Winstar WH4002A is 40 characters by 2 rows of 40x2 LCD display module which is built in with ST7066 controller IC; its default interface is 6800 4/8-bit parallel and 5V or 3.3V power supply optional. This display LCD 40x2 model WH4002A is available for without backlight or with LED backlight options. This LCD display 40x2 is available in various LCD panel colors including gray, yellow/green and blue LCD options. This display LCD 40x2 module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃, its built in character set supports English/Japanese, English/West European, English/Scandinavian European, or English/Cyrillic (Russian) options.

There are different interface options for WH4002A series, details as below:
►WH4002A : 6800 interface (ST7066 IC)
►WH4002A1 : SPI interface (RW1063 IC)
►WH4002A2 : I2C interface (RW1063 IC)


WH4002A Character Display LCD 40x2, LCD 40x2, 40x2 LCD, 40x2 LCD Display, Display 40x2


Interface Pin Function

Pin No. Symbol Description
1 VSS Ground
2 VDD Power supply for logic
3 VO Contrast Adjustment
4 RS Data/ Instruction select signal
5 R/W Read/Write select signal
6 E Enable signal
7~14 DB0~DB7 Data bus line
15 A Power supply for B/L +
16 K Power supply for B/L -

Mechanical Data

Item Standard Value Unit
Module Dimension 182.0 × 33.5 mm
Viewing Area 154.4 × 16.5 mm
Mounting Hole 175.0 × 26.5 mm
Character Size 3.2 × 5.55 mm

Electrical Characteristics

Item Symbol Standard Value
Input Voltage VDD 3/5 V
Recmmended LCD Driving
Voltage for Normal Temp.
Version module @25°C
VDD-VO 4.50 V

Display Character Address Code

Display Position 1 2 3 4 5 6 7 8 9 10 11 12 --- --- 39 40
DD RAM Address 00 01                           27
DD RAM Address 40 41                           67

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