Datasheet

© 2010 Microchip Technology Inc. DS70135G-page 153
dsPIC30F4011/4012
FIGURE 21-1: OSCILLATOR SYSTEM BLOCK DIAGRAM
Primary
OSC1
OSC2
SOSCO
SOSCI
Oscillator
32 kHz LP
Clock
and Control
Block
Switching
Oscillator
x4, x8, x16
PLL
Primary
Oscillator
Stability Detector
Stability Detector
Secondary
Oscillator
Programmable
Clock Divider
Oscillator
Start-up
Timer
Fail-Safe Clock
Monitor (FSCM)
Internal Fast RC
Oscillator (FRC)
Internal
Low-Power RC
Oscillator (LPRC)
PWRSAV Instruction
Wake-up Request
Oscillator Configuration bits
System
Clock
Oscillator Trap
to Timer1
LPRC
FRC
Secondary Osc
POR Done
Primary Osc
F
PLL
POST<1:0>
2
FCKSM<1:0>
2
PLL
Lock
COSC<1:0>
NOSC<1:0>
OSWEN
CF