2PCS-LOT Blue Screen 1602A Blue Screen Module LCD Display 5V White Font Words White Character for with Blue Backlight LCD1602 1602

The 1602 uses a standard 16-pin interface, where: Pin 1: VSS is the ground power Pin 2: VDD is connected to 5V positive power supply Pin 3: V0 is the contrast adjustment end of the LCD. When the positive power is connected, the contrast is the weakest. When the grounding power supply is the highest, the contrast is too high. When the contrast is too high, “ghosting” will occur. In use, the contrast can be adjusted by a 10K potentiometer. > Pin 4: RS is the register selection. When the high level is selected, the data register is selected, and when the low level is selected, the instruction register is selected. Pin 5: R/W is the read/write signal line. When it is high, it performs a read operation, and when it is low, it performs a write operation. When RS and RW are low together, the instruction or display address can be written. When RS is low, RW can read the busy signal, and when RS is high, RW can be written to the data. Pin 6: The E terminal is the enable terminal. When the E terminal changes from a high level to a low level, the liquid crystal module executes the command. Pins 7 to 14: D0 to D7 are 8-bit bidirectional data lines. Pin 15: Backlight power supply positive Pin 16: Backlight power supply negative