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I'm Using an AT91M55800A
If I disable all perifericals conected to ports A and B, only use the USARTs, SPI and IRQ interruptions, all ports are used as input or output, What is the mission of PORTA and PORTB peripherical CLOCK????
APMC_PCER = (1<<PIOA_ID) | (1<<PIOB_ID);
this is the sintaxis to activate de clock, but, what is the mission?
Thanks!!