2camjohn said:
Thanks for the help fellas.
Ill get the WDT working and test the accuracy myself.
Cheers
I think the terminology we're using is wrong. You need the internal osc, not the WDT. The internal osc can be configured to create an interrupt periodically which can wake the PIC from sleep. The WDT is an optional error recovery feature which will reset (not interrupt) the PIC if its counter is not cleared by software periodically. It's related in that the WDT's counter is driven by the internal osc, but you don't use the WDT to wake from sleep.