MAX7219 8-Digit 7-Segment LED Display Module with SPI Interface

MAX7219 8-Digit 7-Segment LED Display Module with SPI Interface
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  • Product Code:SQ1242
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  • $0.57
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Tags: MAX7219, 8-digit display, 7-Segment LED Display, SPI display, LED display driver, 0.36 inch display, Arduino display module, cascadable display, serial LED display, numeric LED module

The MAX7219 8-digit 7-segment display module is a compact, serially interfaced LED display board designed to provide clear numeric readouts in embedded systems, instrumentation, and DIY electronics projects. Built around the MAX7219 display driver IC, this module integrates an on-chip BCD decoder, multiplex scan circuitry, segment and digit drivers, and an 8x8 static RAM that stores each digit's data. The module requires only three microcontroller I/O pins for full control, significantly reducing wiring complexity compared to directly driving multiple 7-segment digits.

This 0.36 inch 8-digit display module features eight 0.36-inch common-cathode red LED digits with decimal points, delivering bright and easily readable numbers across a wide viewing angle. The MAX7219 driver communicates via a 10MHz serial interface using DIN, CLK, and CS lines, and it supports both 5V and 3.3V logic-level microcontrollers, including Arduino, ESP8266, ESP32, and STM32 platforms. On-chip features include digital and analog brightness control, a 150µA low-power shutdown mode that retains data, and a display test mode that turns on all LEDs for verification.

A key advantage of this module is its daisy-chain capability, which allows multiple MAX7219 modules to be connected in series and controlled from the same three I/O pins. This makes it possible to build larger numeric displays without additional microcontroller resources. The module operates on a 5V DC supply with a maximum operating current of 380mA, and it is suitable for applications such as digital clocks, timers, counters, voltmeters, temperature and humidity readouts, battery testers, elevator status displays, and household appliance control panels.

MAX7219 LED display driver module Application

  1. Digital clocks and date displays
  2. Timers, counters, and scoreboards
  3. Voltmeters, ammeters, and battery testers
  4. Temperature and humidity controller readouts
  5. Travel information displays in vehicles
  6. Elevator status and floor indicators
  7. Household appliance displays (hoods, refrigerators, air conditioners)
  8. Industrial control panel numeric readouts

MAX7219 LED display driver module Specifications

  1. Product Model: 8DIG-7SEGMENT
  2. Driver IC: MAX7219
  3. Display Type: 8-digit, 0.36-inch common-cathode 7-segment LED
  4. Display Color: Red
  5. Number of Digits: 8
  6. Decimal Point: Yes
  7. Communication Interface: SPI (3-wire serial: DIN, CLK, CS)
  8. Maximum Serial Clock Frequency: 10 MHz
  9. Operating Voltage (Module): 5V DC
  10. Supply Voltage Range (IC): 4.0V to 5.5V
  11. Operating Current: 380 mA (module, per Aftab Rayaneh)
  12. Maximum Supply Current (IC): 330 mA
  13. Shutdown Current: 150 µA (data retained)
  14. Microcontroller Compatibility: 5V and 3.3V logic levels
  15. Brightness Control: Digital and analog
  16. Display Test Mode: Yes (all LEDs on)
  17. Daisy-Chain Support: Yes
  18. Operating Temperature: -40°C to +85°C
  19. Module Dimensions (Approx.): 82mm × 20mm × 10mm
  20. Weight: Approximately 10 g

Features

  1. 8-digit 0.36-inch common-cathode red LED display with decimal points
  2. MAX7219 driver IC with integrated BCD decoder and multiplex scan circuitry
  3. 10MHz serial interface requiring only three I/O pins (DIN, CLK, CS)
  4. Compatible with both 5V and 3.3V microcontrollers
  5. On-chip 8x8 static RAM for storing digit data
  6. Digital and analog brightness control
  7. 150µA low-power shutdown mode with data retention
  8. Display test mode for verifying all LEDs
  9. Daisy-chain support for cascading multiple modules
  10. Compact module dimensions of approximately 82mm × 20mm × 10mm
  11. Operating temperature range of -40°C to +85°C
  12. Suitable for clocks, counters, voltmeters, and industrial readouts
Electrical Parameters
Input Voltage 5V
Physical Parameters
Size 83 mm x 15 mm x 11mm
Color Red (LED Color)

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