Looking for link to documentation for configuring secondary oscillator for PIC16F1619
I am hoping to use the timer 1 interrupt to wake a 8 bit PIC from sleep. It is my understanding that the secondary oscillator will continue oscillating through sleep. However, I have not been able to find any documentation on how the secondary oscillator is configured and/or enabled. Even the PIC16F1619 (for instance) only has four instances of the word "secondary", and none of them near any configuration information.
I'm sure that there has to be some information, perhaps in an application note somewhere!
Any help/advice would be much appreciated!