MAX7219 LED Digital Tube Display Module Supports

2123

Saving your microcontroller resources without open timer scan freeing the microcontroller to do more things! Only you need to update the display data, a data transfer!

 
MAX7219 digital display control module
 
MAX7219 is an integrated serial input / output common-cathode display driver, which connects the microprocessor 7-segment digital LED display with 8 digits, you can connect a bar graph display or 64 independent LED. On which includes a B-type BCD encoder chip, multi-channel scanning loop, segment word driver, but also an 8 x 8 static RAM for storing each data. Only one external register is used to set the segment current for each LED.
 
A convenient four-wire serial interface can connect all the general-purpose microprocessor. Each data can be addressed in the update does not need to rewrite all of the display. MAX7219 also allows users to select each data coding or non-coding.
The entire device contains a 150μA low-power shutdown mode, analog and digital brightness control, a scan-limit register allows the user to display 1-8 bit data, there is a LED light all the detection mode.
 
Only three IO ports to drive eight digital tube! Digital flicker-free display! Support cascade!
 
PCB plate fixed to the four corners of copper studs, which can effectively prevent a short circuit accident occurs!
 
Digital tube 0.36 inches four one common cathode LED
 
This module is compatible with 5V / 3.3V microcontroller (51 / AVR / STM32 .......)
 
Wiring instructions (in program provides an example, you can access any IO ports, you can modify the port defined in the program):
 
VCC → 5V
 
GND → GND
 
DIN → P00
 
CS → P01
 
CLK → P02
 
NOTES:
 
1.VCC and GND Do not reversed, it would burn chip
 
2.51 MCU P0 port need pull-up resistor, if your device does not have pull-up resistor can be connected to other ports data lines
 
Package:
 
1x MAX7219 digital display module
 
1x Straight pin 5P
 
1x bent pin 5P



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