MAX7219 LED Display 8-bit Digital Tube Display Control Module 3IO Port Control
$ 2.76
Description
Describe: 100% new and high quality Material:Metal Color: see picture Size:Longth 8.2cm/3.23in，width 1.5cm/0.59in，height 1.2cm/0.47in Package Includes: 1Pc MAX7219 8-bit Digital Tube Display Control Module The MAX7219 is an integrated serial input/output common cathode display driver that connects a microprocessor to an 8-digit, 7-segment digital LED display. It can also be connected to a bar graph display or 64 independent LEDs. It includes an on-chip B-type BCD encoder, multi-channel scanning loop, segment driver, and an 8*8 static RAM to store each data. There is only one external register used to set the segment current of each LED. A convenient four-wire serial interface connects to all common microprocessors. Each data can be addressed and updated without rewriting the entire display. The MAX7219 also allows the user to choose whether to encode or not encode each piece of data. The entire device contains a 150μA low-power shutdown mode, analog and digital brightness controls, a scan limit register allowing the user to display 1-8 bits of data, and a detection mode that lights all LEDs. Only 3 IO ports are needed to drive 8-bit digital tubes! The digital tube displays without flickering! Support cascade! The digital tube is connected to the PCB board using a 2.54mm pitch round hole pin header, making it easy to replace the digital tube! The four corners of the PCB board are fixed with copper studs, which can effectively prevent accidents such as short circuits! The digital tube is a 0.36-inch 4-bit common cathode digital tube. This module is compatible with 5V/3.3V microcontroller (51/AVR/STM32....) Wiring instructions (take the provided program as an example, you can connect any IO port, just modify the port definition in the program): VCC→5V GND→GND DIN →P00 CS →P01 CLK→P02 Precautions: 1. Never connect VCC and GND reversely to avoid burning out the chip. The P0 port of the 2.51 microcontroller needs to be connected to a pull-up resistor. If your microcontroller does not have a pull-up resistor, you can connect the data line to other ports. Shipping list: 1. MAX7219 digital tube display module 1 2. Straight pins 5P*1 pcs. Curved pins 5P*1 pcs. 1 copy of 7.51 microcontroller driver (single module display program and cascade module display program) Note: 1. Please allow 5-10mm differences due to manual measurement, thanks. 2. The actual color of the product may be slightly different from the picture, and the website is caused by various factors such as the brightness of the monitor and the brightness of the light. On Jan 3, 2025 at 02:07:28 PST, seller added the following information:
