Datasheet

 2011-2013 Microchip Technology Inc. DS40001574C-page 67
PIC16(L)F1938/9
FIGURE 5-7: INTERNAL OSCILLATOR SWITCH TIMING
HFINTOSC/
LFINTOSC
IRCF <3:0>
System Clock
HFINTOSC/
LFINTOSC
IRCF <3:0>
System Clock
0 0
0 0
Start-up Time
2-cycle Sync Running
2-cycle Sync Running
HFINTOSC/ LFINTOSC (FSCM and WDT disabled)
HFINTOSC/ LFINTOSC (Either FSCM or WDT enabled)
LFINTOSC
HFINTOSC/
IRCF <3:0>
System Clock
= 0  0
Start-up Time 2-cycle Sync
Running
LFINTOSC HFINTOSC/MFINTOSC
LFINTOSC turns off unless WDT or FSCM is enabled
MFINTOSC
MFINTOSC
MFINTOSC
MFINTOSC
MFINTOSC