MAX7219 8-Digital Segment Digital LED Display Tube for Arduino 51/AVR/STM32 2pcs

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...)