MAX7219 LED Dot Matrix 8 Digit Digital Tube Display Control Module Compatible with 5V/3.3V MCU microcontroller

MAX7219 digital tube display control module

MAX7219 is a integrated serial input/output co -cathode display drive. It connects microprocessors and 8 -digit 7 -segment digital LED display. It can also connect a line diagram display or 64 independent LEDs. It includes a BCD encoder on the chip, a multi -road scanning circuit, a segment drive, and a 8*8 static RAM used to store each data. Only one external register is used to set the segment current of each LED.

A convenient four -line serial interface can connect all general microprocessors. Each data can be addressing without rewriting all display when updating. MAX7219 also allows users to choose or not coded each data.

The entire device contains a 150 μA low-power shutdown mode, analog and digital brightness control. A scanning restricted register allows users to display 1-8-bit data, and there is a detection mode that allows all LEDs to glow.

Only 3 IO ports can drive 8 -digit digital tube! There is no flicker when the digital tube is displayed! Support level!

The four corners of the PCB board are fixed with copper snails, which can effectively prevent accidents such as short circuit!

The digital tube is 0.36 inch 4 -bit together the cathode digital tube

This module is compatible with 5V/3.3V single -chip machine (51/AVR/STM32 .......)

Wiring instructions (take the procedure as an example, you can take any IO port and modify the port definition in the program):

VCC→5V

GND→GND

Din→p00

CS→P01

CLK→P02

Precautions:

1. Do not overwhelm thevcc and GND, so as not to burn the chip

2.51 The P0 port of the single chip machine needs to be connected to the pull -up resistance. If your single -chip machine does not connect to the pull -up resist

Shipping list:

1. Max7219 digital tube display module 1pices

2. Straight needle 5P

3. Bending needle 5P