Character Module 20x4

Model No. WH2004A

►Character LCD 20x4
►5x8 dots includes cursor
►+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 (ST7066 IC), option SPI/I2C (RW1063 IC)
►WH2004B : FFC connector
►WH2004F : 7 colors LED option

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Description

Winstar WH2004A is a Character LCD 20x4 display which is built in with ST7066 controller IC; its default interface is 6800 4/8-bit parallel. These 20x4 LCD modules are also available in SPI and I2C interface by using RW1063 controller IC. WH2004A is available in several different backlight colors including blue, green, white, yellow-green, amber, red, white, and RGB 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.

There are different interface options for WH2004A series, details as below:
►WH2004A : 6800 interface (ST7066 IC)
►WH2004A1 : SPI interface (RW1063 IC)
►WH2004A2 : I2C interface (RW1063 IC)

DRAWING

Data source ref:WH2004A-YYH-JW#

SPECIFICATIONS

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	98.0 x 60.0 x 13.6 (MAX)	mm
View area	77.0 x 25.2	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℃ Ta=25℃ Ta=70℃	－ 4.4 3.8	－ 4.5 －	5.3 4.6 －	V V V
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	－	0.4	V
Supply Current	IDD	VDD=5.0V	1.0	1.2	1.5	mA

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