MAX7219 is an integrated serial input/output common cathode display driver that connects a microprocessor to an 8-bit 7-segment digital LED display, as well as a bar graph display or 64 independent LEDs
MAX7219 also allows users to choose whether to encode or not to encode each data
The entire device includes a 150 μ A's low-power off mode, analog and digital brightness control, a scan limit register allowing users to display 1-8 bits of data, and a detection mode that causes all LEDs to light up.
You only need 3 IO ports to drive an 8-bit digital tube! There is no flicker when the digital tube is displayed! Support cascading!
This module is compatible with 5V/3.3V microcontroller (51/AVR/STM32...)
Description
Note:
VCC and GND should not be connected reversed, so as not to burn the chip
Specifications:
Material: PCB + Electronic Components
Power: 5V
Size: 82*15*12mm(L*W*H)
Shell Color: Blue & black
Net Weight:13g
Packaging includes
1PCS * MAX7219 LED Dot Matrix 8 Digit Digital Tube Display Control Module For Arduno