Description: MAX7219 is an integrated serial input / output common-cathode display drivers, which connects the microprocessor 7-segment digital LED display with 8 digits, you can also connect a bar graph displays or 64 independent LED. On which includes a B-type BCD encoder chip, multi-channel scanning loop, segment the word drive, but also an 8 * 8 static RAM for storing each data. Only one external register is used to set the segment current of each LED. Display: 0.36" 4 digit led display 7 seg segment Common cathode Red Power: 5V Material: PCB + Electronic Components Size: 82 * 15 * 18mm Color: Red Wiring instructions (for example, it can connect any IO port, modified the Port Definition in the program): VCC → 5V GND → GND DIN → P00 CS → P01 CLK → P02 Package Included: 10 X MAX7219.
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