6.1.2 Configuring Port Functions (PORTx)

The PORTx registers allow I/O pins to be accessed:

• A write to a PORTx register writes to the corresponding LATx register (PORTx data latch). Those I/O port pin(s) configured as outputs are updated.
• A write to a PORTx register is effectively the same as a write to a LATx register.
• A read from a PORTx register reads the synchronized signal applied to the port I/O pins.