MAX7219 Dot Matrix Module 4-in-1 Display For Arduino

The MAX7219 are compact, serial input/output common-cathode display drivers that interface microprocessors (μPs) to 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or 64 individual LEDs. Included on-chip are a BCD code-B decoder, multiplex scan circuitry, segment and digit drivers, and an 8x8 static RAM that stores each digit.Only one external resistor is required to set the segment current for all LEDs. The MAX7219 is compatible with SPI™, QSPI™, and Microwire™, and has slew-ratelimited segment drivers to reduce EMI.A convenient 3-wire serial interface connects to all common μPs. Individual digits may be addressed and updated without rewriting the entire display. The MAX7219 also allow the user to select code-B decoding or no-decode for each digit.The devices include a 150μA low-power shutdown mode, analog and digital brightness control, a scanlimitregister that allows the user to display from 1 to 8 digits, and a test mode that forces all LEDs on.

Features:

A single module can drive a 8x8 dot matrix common cathode

Module Working voltage: 5V

Module size: 12.8 cm X X1.3 cm

Module with input and output interfaces, support for cascading multiple modules

Wiring:for example 51 SCM

VCC→5V

GND→GND

DIN→P2.2

CS →P2.1

CLK→P2.0