MAX7219 LED Matrix Display
Serial LED matrix / 7-segment display driver IC module. Drives one 8x8 LED matrix or up to eight 7-segment digits. Cascadable for multi-digit or multi-matrix displays. Uses a 5V supply with segment current set by an external RSET resistor.
Pinout
- VCC
5V supply to MAX7219 module
Type · PowerVoltage · 5 - GND
Common ground
Type · Ground - DIN
SPI data in (MOSI); serial data input
Type · SPI - CLK
SPI clock
Type · SPI - CS
Chip Select / LOAD; active low, latches data
Type · SPI - DOUT
Serial data out for daisy-chaining (cascading) multiple MAX7219 modules
Type · SPI
| Pin | Type | Function | Voltage |
|---|---|---|---|
| VCC | Power | 5V supply to MAX7219 module | 5 |
| GND | Ground | Common ground | |
| DIN | SPI | SPI data in (MOSI); serial data input | |
| CLK | SPI | SPI clock | |
| CS | SPI | Chip Select / LOAD; active low, latches data | |
| DOUT | SPI | Serial data out for daisy-chaining (cascading) multiple MAX7219 modules |
Pin details
6 connections- VCC
5V supply to MAX7219 module
PowerVoltage · 5 - GND
Common ground
Ground - DIN
SPI data in (MOSI); serial data input
SPI - CLK
SPI clock
SPI - CS
Chip Select / LOAD; active low, latches data
SPI - DOUT
Serial data out for daisy-chaining (cascading) multiple MAX7219 modules
SPI
Start wiring
I2C · SPI · Single data line · 5 V · 3.3 – 5 V · Bare
Verify supply voltage and logic levels before powering up.
Module pins: VCC, GND, DIN, CLK, CS, DOUT. Schematik maps them to your board in the app.
LED displays
88 other optionsAdafruit HT16K33 backpacks, MAX7219 daisy-chains, NeoPixel and DotStar grids, HUB75 RGB matrix panels, charlieplexed arrays, bare clock displays, and two VFD character modules — almost 90 parts, none wired the same way.
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