16 Characters * 4 Lines, Character LCD module, White Character, Blue Backlight, 5V For Logic Circuit
16 Characters * 4 Lines, Character LCD module, White Character, Blue Backlight, 5V For Logic Circuit
Ground pin from Waveshare product-page interface table
Logic-circuit power supply from Waveshare product-page interface table
LCD contrast adjustment input from Waveshare product-page interface table
Instruction/data register selection, RS=0 instruction register and RS=1 data register per Waveshare product-page table
Read/write selection, R/W=0 register write and R/W=1 register read per Waveshare product-page table
Enable signal from Waveshare product-page interface table
8-bit data input/output line DB0 from Waveshare product-page interface table
8-bit data input/output line DB1 from Waveshare product-page interface table
8-bit data input/output line DB2 from Waveshare product-page interface table
8-bit data input/output line DB3 from Waveshare product-page interface table
8-bit data input/output line DB4 from Waveshare product-page interface table
8-bit data input/output line DB5 from Waveshare product-page interface table
8-bit data input/output line DB6 from Waveshare product-page interface table
8-bit data input/output line DB7 from Waveshare product-page interface table
LED backlight positive supply from Waveshare product-page interface table
LED backlight negative supply from Waveshare product-page interface table
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| VSS | 1 | ground | Ground pin from Waveshare product-page interface table | 0V (GND) |
| VCC | 2 | power | Logic-circuit power supply from Waveshare product-page interface table | +5V |
| VEE | 3 | analog input | LCD contrast adjustment input from Waveshare product-page interface table | contrast adjustment |
| RS | 4 | digital input | Instruction/data register selection, RS=0 instruction register and RS=1 data register per Waveshare product-page table |
SPI · 0V (GND) · +5V
Confirm the data interface matches your host board.
Module pins: VCC, LED+, VSS, LED-. Schematik maps them to your board in the app.
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| R/W | 5 | digital input | Read/write selection, R/W=0 register write and R/W=1 register read per Waveshare product-page table |
| E | 6 | digital input | Enable signal from Waveshare product-page interface table |
| DB0 | 7 | digital io | 8-bit data input/output line DB0 from Waveshare product-page interface table |
| DB1 | 8 | digital io | 8-bit data input/output line DB1 from Waveshare product-page interface table |
| DB2 | 9 | digital io | 8-bit data input/output line DB2 from Waveshare product-page interface table |
| DB3 | 10 | digital io | 8-bit data input/output line DB3 from Waveshare product-page interface table |
| DB4 | 11 | digital io | 8-bit data input/output line DB4 from Waveshare product-page interface table |
| DB5 | 12 | digital io | 8-bit data input/output line DB5 from Waveshare product-page interface table |
| DB6 | 13 | digital io | 8-bit data input/output line DB6 from Waveshare product-page interface table |
| DB7 | 14 | digital io | 8-bit data input/output line DB7 from Waveshare product-page interface table |
| LED+ | 15 | power | LED backlight positive supply from Waveshare product-page interface table | +5V |
| LED- | 16 | ground | LED backlight negative supply from Waveshare product-page interface table | 0V |