PIC16F882 Datasheet, PDF (70/288 Pages) Microchip Technology – 28/40/44-Pin, Enhanced Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F882/883/884/886/887
FIGURE 4-6:
INTERNAL OSCILLATOR SWITCH TIMING
HFINTOSC LFINTOSC (FSCM and WDT disabled)
HFINTOSC
LFINTOSC
Start-up Time
2-cycle Sync
IRCF <2:0>
≠0
=0
System Clock
HFINTOSC LFINTOSC (Either FSCM or WDT enabled)
HFINTOSC
LFINTOSC
IRCF <2:0>
2-cycle Sync
≠0
=0
System Clock
Running
Running
LFINTOSC HFINTOSC
LFINTOSC
HFINTOSC
Start-up Time 2-cycle Sync
IRCF <2:0>
=0
¼0
System Clock
LFINTOSC turns off unless WDT or FSCM is enabled
Running
41291D-page 68
Preliminary
© 2007 Microchip Technology Inc.