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Tobias
- 23rd May 2009, 06:03
What is the difference between an external interrupt and port change interrupt?

For example a 16F877A, INTE enables the RB0/INT external interrupt while RBIE Enables the RB port change interrupt.
tenaja
- 23rd May 2009, 06:32
The difference is one only allows one pin to trigger the interrupt, while the other allows four pins to trigger it.
Tobias
- 23rd May 2009, 06:46
gotcha so the external is an 'only' with the other is 'either/or'