Home Products Character LCD WH2002D

20x2 LCD Display Character

Model No. WH2002D

►Character LCD 20x2
►5x8 dots includes cursor
►+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 PIN17, PIN18
►Interface: 6800 (ST7066 IC), option SPI/I2C (RW1063 IC)


WH2002D is a Character LCD 20x2 display which is built in with ST7066 controller IC; its default interface is 6800 4/8-bit parallel, +5Vpower supply.  WH2002D modules are also available in SPI and I2C interface by using RW1063 controller IC.  It is available in several different backlight colors including blue, green, white, yellow-green, amber, red and white LEDs.   There are different character fonts/texts available for ST7066 IC including English/Japanese, English/West European, English/Scandinavian European, or English/Cyrillic (Russian) as options.  This module can operate at temperature from -20℃ to + 70℃; its storage temperature ranges from -30℃ to + 80℃.

There are three interface options for WH2002D series, details as below:
►WH2002D : 6800 interface (ST7066 IC)
►WH2002D1 : SPI interface (RW1063 IC)
►WH2002D2 : I2C interface (RW1063 IC)


Winstar WH2002D - 20x2 LCD Display Character
Data source ref:WH2002D-TFH-ET#


Interface Pin Function

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

Mechanical Data

Item Dimension Unit
Number of Characters 20 Characters x 2 Lines
Module dimension 89.0 x 21.5 x 9.0 (MAX) mm
View area 75.0 x 15.0 mm
Active area 68.5 x 10.7 mm
Dot size 0.55 x 0.60 mm
Dot pitch 0.60 x 0.65 mm
Character size 2.95 x 5.15 mm
Character pitch 3.45x 5.55 mm
Duty 1/16
Backlight Type LED
IC ST7066U
Interface 6800

Absolute Maximum Ratings

Item Symbol Min Typ Max Unit
Operating Temperature TOP -20 +70
Storage Temperature TST -30 +80
Input Voltage VI VSS VDD V
Supply Voltage For Logic VDD-VSS -0.3 7 V
Supply Voltage For LCD VDD-Vo -0.3 13 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 0.7 VDD VDD V
Input Low Volt. VIL Vss 0.6 V
Output High Volt. VOH 3.9 VDD V
Output Low Volt. VOL 0 0.4 V
Supply Current IDD VDD=5.0V 1.0 1.2 1.5 mA

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