8 -digit digital tube display module Max7219 LED display supports level eight -bit serial 3 IO port control

Information download address: http://box.cloud.taobao.com/s/zodjzokjij

MAX7219 digital tube display control module

MAX7219 is a integrated serial input/output co -cathode display drive. It connects microprocessors and 7 -digit 7 -segment digital LED display. It can also connect a line chart display or 64 independent LEDs.It includes a BCD encoder on a 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 closing mode, analog and digital brightness control. A scanning restriction 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!The digital tube is displayed without flashing!Support level!

The digital tube and the PCB board are connected with a 2.54mm spacing circular pores, which can easily replace the digital tube!

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 inches, a 4 -bit integrated co -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

Note:

1. Do not connect withvcc and GND, so as not to burn the chip

2.51 Single -chip Machine P0 need to connect to the pull -up resistance. If your single -chip machine does not connect to the pull -off resistance, you can connect the data cable to other ports

Delivery list:

1. Max7219 digital tube display module 1

2. Straight needle 5p*1 Bending needle 5P*1

7.51 1 single -chip driver 1 (a single module display program and a class joint module display program)