PIC16F/LF1946/47
FIGURE 5-7:
INTERNAL OSCILLATOR SWITCH TIMING
HFINTOSC/
MFINTOSC
LFINTOSC (FSCM and WDT disabled)
HFINTOSC/
MFINTOSC
Start-up Time
2-cycle Sync
Running
LFINTOSC
0
0
IRCF <3:0>
System Clock
HFINTOSC/
MFINTOSC
LFINTOSC (Either FSCM or WDT enabled)
HFINTOSC/
MFINTOSC
2-cycle Sync
Running
LFINTOSC
IRCF <3:0>
0
0
System Clock
LFINTOSC
HFINTOSC/MFINTOSC
LFINTOSC turns off unless WDT or FSCM is enabled
Running
LFINTOSC
Start-up Time 2-cycle Sync
HFINTOSC/
MFINTOSC
= 0
0
IRCF <3:0>
System Clock
DS41414A-page 66
Preliminary
2010 Microchip Technology Inc.