Microchip Technology dsPIC30F - Section 7. Oscillator

© 2004 Microchip Technology Inc. DS70054C-page 7-3
Section 7. Oscillator
Oscillator
7
Figure 7-1: Oscillator System Block Diagram
Primary
OSC1
OSC2
SOSCO
SOSCI
Oscillator
Secondary
Clock
and Control
Block
Switching
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
Oscillator Trap
to Timer1
LPRC
FRC
Secondary Osc
POR
Primary Osc
PLL
Oscillator
32 kHz
F
OSC
(1)
Note 1: The system clock output, FOSC, is divided by 4 to get the instruction cycle clock.
(2)
2: Some devices allow the internal FRC oscillator to be connected to the PLL. See the specific device data sheet
for further details.