Microchip Technology MCP1630DM-DDBS1 Data Sheet
PIC12F683
DS41211D-page 26
©
2007 Microchip Technology Inc.
FIGURE 3-6:
INTERNAL OSCILLATOR SWITCH TIMING
HFINTOSC
LFINTOSC
IRCF <2:0>
System Clock
HFINTOSC
LFINTOSC
IRCF <2:0>
System Clock
HF
LF
(1)
≠ 0
= 0
≠
0
=
0
Start-up Time
2-cycle Sync
Running
2-cycle Sync
Running
HFINTOSC
LFINTOSC (FSCM and WDT disabled)
Note 1:
When going from LF to HF.
HFINTOSC
LFINTOSC (Either FSCM or WDT enabled)
LFINTOSC
HFINTOSC
IRCF <2:0>
System Clock
= 0
≠
0
Start-up Time 2-cycle Sync
Running
LFINTOSC
HFINTOSC
LFINTOSC turns off unless WDT or FSCM is enabled