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Max7219 digital tube display control module
Max 7219 is an integrated string input/output co-cathode display drive that connects microprocessors to 7-bit digital LED displays of 8 bits, or to bar-line displays or 64 independent leds.It includes a B-type BCD encoder on a piece, a multi-way scan circuit, a field drive, and a static RAM of 8x8 to store each data.Only one external register is used to set the current of each LED.

A convenient four-line sequence interface connects all common microprocessors.Each information can be addressed without having to rewrite all displays when updating.Max 7219 also allows users to choose code or not to encode each data.
The entire device contains a 150 a low power shutdown mode, analog and digital brightness control, a scan-restricted register that allows users to display 1-8 bit data, and a detection mode that lets all leds glow.

Just 3 IO ports can drive 8 digit digital tubes!The digital tube is not flashy when displaying!Support cascades!

Pcb board four corners are fixed with copper stud, which can effectively prevent short circuit and other unexpected situations!

Digital tube is 3cm bit one-in-one cathode digital tube

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

Wiring instructions (for example, any IO port can be connected to the supplied program and the definition of port can be modified):

Vcc 5V
Gnd GND
Din P00
Cs P01
Clk P02

Points to note:
1.Vcc and GND must not be counter-routed to avoid damaging the chip
2.51 the P0 of a single chip microcomputer needs to be connected to the pull resistance. if your single chip does not have a pull resistance, you can connect the data line to other ports

Shipping list:
1.Max7219 digital tube display module 1 pcs
- straight row needle 5P
- curved needle 5P
4.Max7219 english data manual 1
5.Max7219 1 chinese data manual
6.Pdf format schematic 1
7.51 single-chip driver 1 (single module display program and cascade module display pro