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VCC: Power supply - DIO: Serial Data Input
- RCLK: clock pulse signal
- SCLK: input clock signal
- GND: Ground
- GND: grounding
TM1638 8 Bits Keyboard LED Digital Tube Module Function Introductios:
Only need 3-wire control. - Adapts TM1638 digital tube drive chip.
- Common anode LED digital tube.
- Only need three common IO and could drive, no need MCU scan, save MCU sources.
- With 8 8digital tube (including decimal point).
- 16 buttons.
- Support 8 degree brightness adjustment.
Product parameters: 1. Working voltage: 3.3V-5V 2. Pin header leads to common pins, including a VCC pin, 4 bit drive pins (D1D2, 0D3, D4), and 8 segment drive pins (A, B, C, D, E, F, G, DP) Onboard 2 way 74HC164 serial to parallel chip, onboard 2 way 0.36 inch red common positive 4-digit 8-segment digital tube, onboard control interface, convenient for external equipment Product parameters: 1. Working voltage: 5V Instructions for use: Wiring instructions (take the provided program as an example, you can connect any IO port, modify the port definition in the program): VCC-5V GND-GND DAT = P23 CP = P22
