MAX7219 Dot Matrix Module MCU Control Drive Module LED Display Module Suitable For Arduino Red/Green/BlueItem NO.: MAX7219Matrix1Bit

MAX7219 Dot Matrix Module Red/Blue/Green

Product Information:

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, as well as a bar graph display or 64 independent LEDs. It includes an on chip B-type BCD encoder, a multi scan loop, a segment word driver, and an 8 * 8 static RAM for storing each data. There is only one external register used to set the segment current of each LED.

A convenient four wire serial interface can connect to general-purpose microprocessors. Each data can be addressed without overwriting all displays when updated. The MAX7219 also allows users to choose whether to encode or not to encode each piece of data.

The entire device contains a 150 μ A's low-power off mode, analog and digital brightness control, a scan limit register that allows users to display 1-8 bits of data, and a detection mode that allows all LEDs to emit light.

Only 3 IO ports are required to drive 1 dot matrix! No flicker during dot matrix display! Support cascading!

Module Parameters:

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

2. Module working voltage: 5V

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

4. With 4 fixing screw holes, with an aperture of 3mm

5. The module is equipped with input and output interfaces, supporting multiple modules cascading

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 the input port needs to be connected to the CPU

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

Take 51 single-chip microcomputer as an example:

VCC → 5V

GND → GND

DIN → P2.0

CS → P2.1

CLK → P2.2