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    HG1286412字庫(kù)液晶顯示模塊應(yīng)用2
    
    
    
        
    
            
    日期：2025-07-05 07:02
    
            
    瀏覽次數(shù)：1661
    
        
    
        
    
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        HG1286412字庫(kù)液晶顯示模塊應(yīng)用2

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    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