PIC24FJ16GA MICROCHIP [Microchip Technology], PIC24FJ16GA Datasheet - Page 89

• Manufacturer Part Number: PIC24FJ16GA
• Description: 28/44-Pin General Purpose, 16-Bit Flash Microcontrollers
• Manufacturer: MICROCHIP [Microchip Technology]

7.0
The oscillator system for PIC24FJ64GA004 family
devices has the following features:
• A total of four external and internal oscillator options
• On-chip 4x PLL to boost internal operating frequency
FIGURE 7-1:
© 2008 Microchip Technology Inc.
Note:
as clock sources, providing 11 different clock modes
on select internal and external oscillator sources
SOSCO
SOSCI
OSCO
OSCI
OSCILLATOR
CONFIGURATION
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
“PIC24F
”Section 6. Oscillator” (DS39700).
Primary Oscillator
Secondary Oscillator
Oscillator
Oscillator
LPRC
FRC
Family
PIC24FJ64GA004 FAMILY CLOCK DIAGRAM
SOSCEN
Enable
Oscillator
(nominal)
31 kHz (nominal)
8 MHz
Reference
Manual”,
CLKDIV<10:8>
PIC24FJ64GA004 FAMILY
Preliminary
PIC24FJ64GA004 Family
4 x PLL
8 MHz
4 MHz
• Software-controllable switching between various
• Software-controllable postscaler for selective
• A Fail-Safe Clock Monitor (FSCM) that detects
A simplified diagram of the oscillator system is shown
in Figure 7-1.
clock sources
clocking of CPU for system power savings
clock failure and permits safe application recovery
or shutdown
ECPLL,FRCPLL
XTPLL, HSPLL
XT, HS, EC
FRCDIV
SOSC
LPRC
FRC
Clock Control Logic
Fail-Safe
Monitor
Clock
CLKDIV<14:12>
WDT, PWRT
Clock Source Option
for Other Modules
DS39881C-page 87
CLKO
Peripherals
CPU