MAX7129 Dot Matrix Display

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  • Input voltage: 5V
  • Maximum Operating Current: 320 mA
  • Forward Voltage for Each Segment or LED (Turning ON): 1.5V – 2.0V
  • Forward Current for Each Segment or LED (During ON): 10mA – 15mA
  • Maximum Operating Temperature: – 25°C to 60°
  •  All common microcontrollers can be connected to this module by using a 4-wire serial interface.
  • This 8×8 DMD Module requires only 3 I/O lines for driving the display.


  • The 8×8 Dot Matrix Display Module has a MAX7219 driver IC and an 8×8 LED Matrix.
  • The MAX7219 IC is a compact and serial input/output common-cathode display driver. This IC is developed by Maxim Integrated, California. The presence of the MAX7219 IC on the 8×8 Display Module will give you a very easy interfacing experience with any development boards.
  • The 8×8 Led Matrix modules are available in different modules and each of the modules will have different pin configurations, but they have the same functioning pins.
  • The 8×8 Dot Matrix Display Module consists of 10 Pins. There are two pin series on both sides of the module. The pin series alongside the MAX7219 IC Consists of 3 driver pins (DIN, CS, CLK) to drive the display and two power pins (Vcc, GND) for powering the module.
  • The other one is just on the opposite side of the first one, covered by the LED matrix. Use these pins while connecting multiple 8×8 Dot Matrix Displays in Series with each other. These pins consist of almost the same pins as the first one; the only difference is the DOUT Pin which allows you to connect with the DIN pin of another Module.

The 8×8 Dot Matrix Display Modules can be used as the following:

  • Outdoor Display
  • Table Clock
  • As a Weather Display
  • Character Design
  • Displaying Results