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Topic: pin usage and assignment (Read 152 times) previous topic - next topic


Are the SCK, MOSI, and MISO pins located on the ICSP block on the Arduino Uno connected to pins 11, 12, and 13 also or can they be used independently from the digital pins? In other words, would connecting a device to the ICSP block free up three digital pins? Thanks.


No. The cluster is connected to Uno's SPI on a Uno, and Mega's SPI on a Mega, thereby enabling shields that use it to work on both.

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