Module MAX7219 dot matrix

Module parameters:

1. A single module can drive an 8 * 8 coin lattice

2. Module operating voltage: 5V

3. Module size: length 12.8 cm X width 3.2 cm x high 1.3 cm

4. With 64 fixed screw holes, aperture 3mm

5. Module with input and output interfaces, support multiple modules cascade

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, only need to connect the input port to the CPU

3. When the plurality of cascaded modules, the first one input termination module to the CPU , the output end of the two input module, the first two output termination module of 3 input modules, and so forth . ..

Take 51 MCU as an example:

VCC   →   5V

GND   →   GND

DIN   →   P2.2

CS    →   P2.1

CLK   →   P2.0