pic24hj128gp510t-i-pt Microchip Technology Inc., pic24hj128gp510t-i-pt Datasheet - Page 121

• Manufacturer Part Number: pic24hj128gp510t-i-pt
• Description: High-performance, 16-bit Microcontrollers
• Manufacturer: Microchip Technology Inc.

8.0
The PIC24HJXXXGPX06/X08/X10 oscillator system
provides:
• Various external and internal oscillator options as
FIGURE 8-1:
© 2007 Microchip Technology Inc.
Note:
clock sources
Note 1: See Figure 8-2 for PLL details
OSC2
OSC1
SOSCO
SOSCI
OSCILLATOR
CONFIGURATION
This data sheet summarizes the features
of this group of PIC24HJXXXGPX06/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 “PIC24H Family Reference
Manual”. Refer to the Microchip web site
(www.microchip.com)
PIC24H
sections.
Oscillator
TUN<5:0>
FRC
Primary Oscillator
Secondary Oscillator
Oscillator
PIC24HJXXXGPX06/X08/X10 OSCILLATOR SYSTEM DIAGRAM
Family
LPRC
LPOSCEN
Reference
S1
÷ 16
S3
for
FRCDIV<2:0>
the
PIC24HJXXXGPX06/X08/X10
Manual
latest
PLL
(1)
PIC24H
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
S0
S5
S4
S2
S6
÷ 2
Reset
DOZE<2:0>
DS70175F-page 119
WDT, PWRT,
Timer 1
FSCM
F
F
OSC
CY