TM1638 8-Bit Button Digital LED Display Module

SKU: VM00690

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Use TM1638 digital tube drive chip to drive common cathode LED digital tube. This module for the chip TM1638, set the above three kinds of single chip microcomputer common peripheral circuit, the biggest characteristic is to simply take microcontroller three IO mouth can drive, scanning display and key scan don't need microcontroller intervention, only need to register to display data related to reading and writing or testing buttons, save MCU resources.

Technical Specification:

  • Rated Voltage: DC 12V
  • Voltage Range: DC 7.0V-13.6V
  • Input Current: 24A
  • Rated Speed: 9500RPM
  • Temperature Range: -10°C ~ 70°C
  • Size: 76mm*50mm*10mm (L*W*H)


  • Use TM1638 digital tube drive chip to drive a common cathode LED digital tube.
  • Can be extended to 3 * 8 buttons, led digital tube, and can be controlled separately.
  • Support 8 brightness control, led digital tube, and use the same brightness.
  • Support cascading up to 6 of the same module.
  • 8 LED, 8-bit digital tube and 8 buttons, common cathode LED digital tube, such as STC microcontroller can be directly connected.


  • Household electrical appliances
  • Set-top boxes
  • Electronic scale
  • Smart meters
  • LED Ddisplay devices

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