MAX7219 Dot Matrix Module Microcontroller Module 4 in 1Displ

Description:

1. A single module can drive a 8×8 dot matrix common cathode
2. Operating voltage: 5V
3. dimensions: length 12.8 cm X 12.8 cm wide and 1.3 cm high X
4. fixing screws with 64 holes with a diameter 3mm
5. module with input and output interfaces, support for cascading multiple modules

Wiring instructions:

1. The left side of the module to the input port, the right to an output port.
2. When the control of a single module, simply input port connected to CPU
3. When a plurality of cascaded modules, input and output termination CPU, an input terminal of the second output end of the first module a module, the first two modules of the input terminal of the three termination modules, and so on. ..
51 microcontrollers, for example:
VCC → 5V
GND → GND
DIN → P2.2
CS → P2.1
CLK → P2.0