RMW Read modify write

[longpole001]

when using the whole port as a data i/o bus is specifying LAT control possible or required for the port ?

[HenrikOlsson]

Hi Sheldon,
Yes, it's possible. It's not required but generally recommended (I'd say).
You say i/o but you can't use LAT to read the state of the pins when in input mode. If you read LAT you get the state of the output latch, not the state of the actual pins.

/Henrik.