2.28-inch 2004 LCD Display Module - WH2004D

2.28-inch 2004 LCD Display Module

Model No. WH2004D

►Character LCD Module 20x4
►Type: Character
►Structure : COB
►Size: 2.28 inch
►20 characters x 4 Lines
►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 PIN1, PIN2, PIN15, PIN16 or A and K
►Interface: 6800 (ST7066 IC), option SPI/I2C (RW1063 IC)

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Description

WH2004D is a 2.28-inch 2004 LCD display with 20 characters per line across 4 lines. The module uses a COB (Chip on Board) structure and measures 77.0 x 47.0 x 12.4 mm, with a viewing area (VA) of 60.0 x 22.0 mm. The default configuration uses the ST7066 LCD controller with a 6800 4/8-bit parallel interface.

The default supply voltage is 5V, with a 3V version also available. Negative voltage is supported only with the 3V version. Depending on the module configuration, LED backlight connections are available through PIN1/PIN2, PIN15/PIN16, or dedicated A/K terminals.

WH2004D is available with multiple LCD display modes, including positive gray, positive yellow-green, negative blue, and positive or negative FSTN options. LED backlight colors include yellow-green, blue, green, white, amber, and red.

Versions using the ST7066 controller are available with multiple character font sets, including English/Japanese, Western European, Eastern European, Scandinavian European, Cyrillic (Russian), and Hebrew/Arabic.

Interface Options

WH2004D: 6800 4/8-bit parallel interface (ST7066 IC)
WH2004D1: SPI interface (RW1063 IC)
WH2004D2: I2C interface (RW1063 IC)

DRAWING

WH2004D Character Display Modules, LCD Module 20x4, Display LCD 20x4

SPECIFICATIONS

Mechanical Data

Item	Dimension	Unit
Number of Characters	20 Characters x 4 Lines	－
Module dimension	77.0 x 47.0 x 12.4 (MAX)	mm
View area	60.0 x 22.0	mm
Active area	55.1 x 17.56	mm
Dot size	0.46 x 0.42	mm
Dot pitch	0.51 x 0.47	mm
Character size	4.03 x 2.30	mm
Character pitch	4.51 x 2.78	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℃ Ta=25℃ Ta=70℃	－ 4.4 3.8	－ 4.5 －	5.3 4.6 －	V V V
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

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 -

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