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HG1286412字庫液晶顯示模塊應(yīng)用2

日期：2025-11-05 06:40
瀏覽次數(shù)：1717
摘要：
HG1286412字庫液晶顯示模塊應(yīng)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

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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