Maxbell MAX7219 Dot Matrix 8x8 LED Display Module for Arduino /51/ STM32 / MCU Drive

Description:

Integrating serial input/output common cathode display driver, connects microprocessor to 8-digit or 7-digit LED display, bar graph display and 64 red LED.
Operating Voltage: DC 5V
With 4 screws holes, hole diameter: Approx. 3 mm/ 0.12 inch
With input and output interfaces
Supports several module cascade

Specification:

Module Dimensions: Approx. 32 ×32 ×13 mm/ 1.26 ×1.26 ×0.51 inch
As the pictures show, the input port is in the left side of module, and the onput port is in the right left of that.
When only control a single module, just need to connect the input port to CPU.
When connect more modules, input port of the first module should connect CPU, onput port of that connects the input port of the second module, and the onput port of the second module connects the input port of the third module, and so on.
Taking 51-Single Chip Micyoco as an example:
VCC connects to 5V
GND connects to GND
DIN connects to P2.2
CS connects to P2.1
CLK connects to P2.0

Package Includes:

1 Piece of PCB Board
1 Piece of AS Dot Matrix LED Module
2 Pieces of 1x8 Round Hole Female Header
2 Pieces of 5P Looper

Note:

1.Please don't connect VCC and GND inversely, lest the chip is burnt out.
2.When MCU-51 P0 port controls, the pull-up resistor must be connected, and the suggested resistance is about 4.7K-10K.
3.Please insert the dot matrix to the round hole block firstly, and then insert the round hole block to the PCB board for weing.
4.Please hold the side of dot matrix with words towards yourself, and the PIN of this side is on the order of 12345, from left to right.