32 (CMP) Comparator Module
Comparators are used to interface analog circuits to a digital circuit by comparing two analog voltages and providing a digital indication of their relative magnitudes. Comparators are very useful mixed-signal building blocks because they provide analog functionality independent of program execution. The PIC18(L)F26/45/46K40 devices have two comparators (C1/C2).
The analog comparator module includes the following features:
- Programmable input selection
- Programmable output polarity
- Rising/falling output edge interrupts
- Wake-up from Sleep
- CWG Auto-shutdown source
- Selectable voltage reference
- ADC Auto-trigger
- Odd numbered timers (Timer1, Timer3, etc.) Gate
- Even numbered timers (Timer2, Timer4, etc.) Reset
- CCP Capture Mode Input
- DSM Modulator Source
- Input and Window Signal-to-Signal Measurement Timer