DSPIC33FJ64GP306 Microchip Technology Inc., DSPIC33FJ64GP306 Datasheet - Page 137

• Manufacturer Part Number: DSPIC33FJ64GP306
• Description: High-performance, 16-bit Digital Signal Controllers
• Manufacturer: Microchip Technology Inc.

8.0
The dsPIC33FJXXXGPX06/X08/X10 oscillator system
provides:
• Various external and internal oscillator options as
FIGURE 8-1:
© 2007 Microchip Technology Inc.
Note:
clock sources
SOSCO
OSC2
OSC1
SOSCI
Note 1: See Figure 8-2 for PLL details
OSCILLATOR
CONFIGURATION
This data sheet summarizes the features
of this group of dsPIC33FJXXXGPX06/
X08/X10 devices. It is not intended to be a
comprehensive reference source. To com-
plement the information in this data sheet,
refer to the “dsPIC33F Family Reference
Manual”. Please refer to the Microchip
web site (www.microchip.com) for the lat-
est dsPIC33F Family Reference Manual
sections.
Oscillator
TUN<5:0>
FRC
Primary Oscillator
Secondary Oscillator
dsPIC33FJXXXGPX06/X08/X10 OSCILLATOR SYSTEM DIAGRAM
Oscillator
LPRC
LPOSCEN
S1
S3
÷ 16
dsPIC33FJXXXGPX06/X08/X10
FRCDIV<2:0>
PLL
(1)
dsPIC33F
XTPLL, HSPLL,
ECPLL, FRCPLL
Clock Fail
• An on-chip PLL to scale the internal operating
• The internal FRC oscillator can also be used with
• Clock switching between various clock sources
• Programmable clock postscaler for system power
• A Fail-Safe Clock Monitor (FSCM) that detects
• A Clock Control register (OSCCON)
• Nonvolatile Configuration bits for main oscillator
A simplified diagram of the oscillator system is shown
in Figure 8-1.
S7
XT, HS, EC
FRCDIV16
frequency to the required system clock frequency
the PLL, thereby allowing full-speed operation
without any external clock generation hardware
savings
clock failure and takes fail-safe measures
selection.
FRCDIVN
SOSC
LPRC
FRC
Clock Switch
NOSC<2:0> FNOSC<2:0>
S1/S3
S7
S6
S0
S5
S4
S2
÷ 2
Reset
DOZE<2:0>
DS70286A-page 135
WDT, PWRT,
Timer 1
FSCM
F
F
OSC
CY