NOYITO MAX7219 Dot Matrix Module 4 in 1 Display Module Blue Red Green Three Colors with 5Pin Wire Suitable for Microcontroller Red

The MAX7219 is an integrated serial inputoutput commoncathode display driver that connects a microprocessor to an 8digit digital 7segment LED display or a bar graph display or 64 separate LEDs It includes an onchip Btype BCD encoder multichannel scan loop segment word driver and an 8x8 static RAM to store each data Only one external register is used to set the segment current of each LED A convenient fourwire serial interface can be connected to all common microprocessors Each data can be addressed without any need to overwrite all displays when updating The MAX7219 also allows the user to choose whether to encode or not encode each data The entire device includes a 150A lowpower shutdown mode analog and digital brightness control a scan limit register that allows the user to display 18 bits of data and a detection mode that allows all LEDs to illuminate There are three colors red blue and green The blue and green products are upgraded based on user feedback.