128x64 LCD Graphic Displays

Model No. WG12864J5

►Graphic LCD 128x64
►Type: Graphic
►Structure: COB
►Size: 2.93"
►IC: ST7920
►+5V power supply
►1/64 duty cycle
►Internal boost option
►Chinese version
►Interface: 6800/SPI

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Description

WG12864J5 is a monochrome 128x64 graphic dot matrix LCD display module with a COB (Chip on Board) structure. The module's outline dimension is 93x70mm, with an active area size of 66.52x33.24mm (2.93-inch diagonal). WG12864J5 is built with the ST7920 controller IC (or compatible), supporting both 6800 8-bit parallel and SPI interfaces. It operates on a 5V power supply and optionally includes an internal boost circuit.

This model supports Traditional Chinese, Simplified Chinese, and Japanese fonts. It is available with or without LED backlight, with multiple backlight color options. The glass types include STN positive, STN negative, and FSTN LCD. The operating temperature range is -20℃ to +70℃, and the storage temperature range is -30℃ to +80℃. All materials comply with RoHS environmental standards and EU REACH regulations.

The COB structure includes a PCB, making it easier to mount and integrate into customer devices or equipment. This robust design is well suited for industrial control equipment, instrumentation, and various other applications.

DRAWING

Winstar 128x64 LCD Graphic Displays - WG12864J5

Data source ref:WG12864J5-TFH-V#T

SPECIFICATIONS

Mechanical Data

Item	Dimension	Unit
Number of dots	128 x 64	－
Module dimension	93.0 x 70.0 x 13.6(Max)	mm
View area	72.0 x 40.0	mm
Active area	66.52 x 33.24	mm
Dot size	0.48 x 0.48	mm
Dot pitch	0.52 x 0.52	mm
Duty	1/32
Backlight Type	LED
IC	ST7920
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	VO-VSS	0	－	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	V0-VSS	Ta=-20℃ Ta=25℃ Ta=70℃	－ 4.4 －	－ 4.6 －	－ 4.8 －	V V V
Input High Volt.	VIH	－	0.7VDD	－	VDD	V
Input Low Volt.	VIL	－	-0.3	－	0.6	V
Output High Volt.	VOH	－	0.8VDD	－	VDD	V
Output Low Volt.	VOL	－	－	－	0.4	V
Supply Current	IDD	VDD=5.0V	－	2.6	3.0	mA

Interface Pin Function

Pin No.	Symbol	Level	Description
1	VSS	0V	Ground
2	VDD	5.0V	Supply voltage for logic
3	VO	－	Supply voltage for LCD
4	RS	－	H: Data , L : Instruction
5	R/W	H/L	H: Read (MPU←Module) , L: Write (MPU→Module)
6	E	H/L	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 LED backlight ( + )
16	K	－	Power Supply for LED backlight ( - )
17	RST	H/L	Reset LCM
18	Vout	－	Positive voltage for LCD