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The description for each pin is given below.ĭIG0- Common ground for all eight segments of DIGIT0ĭIG1- Common ground for all eight segments of DIGIT1ĭIG2- Common ground for all eight segments of DIGIT2ĭIG3- Common ground for all eight segments of DIGIT3ĭIG4- Common ground for all eight segments of DIGIT4ĭIG5- Common ground for all eight segments of DIGIT5ĭIG6- Common ground for all eight segments of DIGIT6ĭIG7- Common ground for all eight segments of DIGIT7

MAX7219 is a 24-pin IC available in different packages and is selected depending on the requirements.

The IC is serial input common-cathode (Common Negative) display drivers that interface microprocessors (or microcontroller) to 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or 64 individual LEDs. The MAX7219 is an IC designed to control a 8x8 LED MATRIX.