TM1637 LED Display Module 4 Bits Digital Tube TM1637

Product Overview

The module described in your document is a TM1637-Based 4-Digit 7-Segment LED Display Module (often referred to as a "digital tube" module). It features four multiplexed, red 7-segment LED characters along with a center colon, making it popular for time-displays and counters. The module utilizes an onboard driver chip to handle the complex tasks of multiplexing and refreshing the LEDs, allowing a microcontroller to control the entire display using only two digital pins.

Core Specifications

• Driver IC: TM1637 (LED drive control circuit with integrated keyboard scan interface)

• Display Elements: 4-digit, red, common-anode 7-segment display (with clock colon pins)

• Control Interface: 2-wire serial protocol (CLK, DIO) – "I2C-like" but bit-banged

• Operating Voltage: 3.3V to 5V DC

• Mounting Features: 4x M2 screw positioning holes (2.2mm diameter) for easy installation