Data is sent out at the serial output pin on the falling edge of CLK. Then this data is passed to either the digit or control registers on the rising edge of LOAD/CS. On the rising edge of a clock input, this data is shifted into the 16-bit shift register integrated inside this chip. How to use MAX7219?Ī 16-bit data is sent at serial DIN input. One of the biggest advantages of using this IC is you can address Individual digits without rewriting the entire display.
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