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HG1286412字庫液晶顯示模塊應用2

日期：2026-01-02 10:43

瀏覽次數：1752

摘要：

HG1286412字庫液晶顯示模塊應用2

接上一篇

三，HG1286412液晶i顯示模塊尺寸圖

PIN CONNECTIONS

Pin	Symbol	Level	Function
1	VSS	0V	GND
2	VDD	+5V	Power supply for logic
3	VO	-	No connection
4	RS	H/L	"H" Data, "L" Instruction code
5	R/W	H/L	"H" Read, "L" Write
6	E	H/L	Enable signal
7 \| 14	DB0 \| DB7	H/L	Data bus line
15	PSB	H/L	"H" Parallel mode "L" Serial mode
16	NC	-	No Connection
17	/REST	L	Reset signal ,active "L"
18	VOUT	-	No connection
19	LEDK	0V	Power supply for LED backlight
20	LEDA	+5V	Power supply for LED backlight

NOTES:
1. Built-in ST7920(with Chinese char ROM)
2. Yellow green/blue mode optional
3. 5V/3.3V power supply optional
4. Parallel mode/serial mode optional

MECHANICAL DATA

Item	Nominal Dimensions	Unit
Module Size(W x H x T)	93.0X70.0X12.5	mm
Viewing Area (Wx H)	72.0X40.0	mm
Dot Pitch (W xH)	0.52X0.52	mm
Dot Size (W x H)	0.48X0.48	mm

ABSOLUTE MAXIMUM RATINGS

Item	Symbol	Min.	Max.	Unit
Supply Voltage (Logic)	VDD-VSS	-0.3	5.5	V
Supply Voltage (LCD)	VO-VSS	-0.3	7	V
Input Voltage	VI	-0.3	VDD+0.3	V
Operating Temp.	TOPR	-20	70	℃
Storage Temp.	TSTG	-30	80	℃

ELECTRICAL CHARACTERISTICS (VDD=5.0V, Ta=25℃)

Item	Symbol	Min.	Typ.	Max.	Unit
Input High Voltage	VIH	0.7VDD	-	VDD	V
Input Low Voltage	VIL	-0.3	-	0.6	V
Output High Voltage	VOH	0.8VDD	-	VDD	V
Output Low Voltage	VOL	0	-	0.4	V
Supply Current	IDD	-	3	5	mA
LCD Driving Voltage	VO-VSS	-	5	-	V

LED BACKLIGHT SPECIFICATIONS (Ta=25℃)

Item	Forward Voltage	Forward Current
YELLOW-GREEN	4.1V	360mA
White	3.1V	60mA

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