MAX7219 dot matrix module || Control MCU module || 4-in-1 display || Free 5P cable (H6A4)

The MAX7219 is an integrated serial input/output common cathode display driver that connects a microprocessor to an 8-bit 7-segment digital LED display, a bar graph display, or 64 independent LEDs. It includes an on-chip B-type BCD encoder, multiplexer scan loop, segment word driver, and an 8*8 static RAM to store each data. Only one external register is used to set the segment current of each LED.

A convenient four-wire serial interface can be connected to all common microprocessors. Each data can be addressed without rewriting all displays when updating. The MAX7219 also allows the user to choose to encode or not encode each data.
The entire device includes a 150μA low-power shutdown mode, analog and digital brightness control, a scan limit register that allows the user to display 1-8 bits of data, and a detection mode that makes all LEDs light up.

Only 3 IO ports are needed to drive 1 dot matrix! No flicker when the dot matrix is ​​displayed! Supports cascading!

Module parameters:

1. A single module can drive an 8*8 common cathode dot matrix

2. Module operating voltage: 5V

3. Module size: 12.8cm long x 3.2cm wide x 1.3cm high

4. With 64 fixing screw holes, hole diameter 3mm

5. The module has input and output interfaces and supports multiple module cascades

Wiring instructions:

1. The left side of the module is the input port, and the right side is the output port.

2. When controlling a single module, you only need to connect the input port to the CPU

3. When multiple modules are cascaded, the input of the first module is connected to the CPU, the output is connected to the input of the second module, the output of the second module is connected to the input of the third module, and so on...

Take 51 microcontroller as an example:

VCC → 5V

GND → GND

DIN → P2.2

CS → P2.1

CLK → P2.0

Delivery list:

1. MAX7219 dot matrix module four-in-one (finished product, with dot matrix, tested)

2. 20CM Dupont line 5P

If you want to know more about the product（details+price）, please send an email to sales@pcb-hero.com , and then we can talk in detail.