pic24hj16gp304 Microchip Technology Inc., pic24hj16gp304 Datasheet - Page 83

• Manufacturer Part Number: pic24hj16gp304
• Description: High-performance, 16-bit Microcontrollers
• Manufacturer: Microchip Technology Inc.

7.0
The PIC24HJ32GP202/204 and PIC24HJ16GP304
oscillator system provides:
• External and internal oscillator options as clock
• An on-chip PLL to scale the internal operating
FIGURE 7-1:
© 2007 Microchip Technology Inc.
Note:
sources
frequency to the required system clock frequency
OSCO
Note 1: See Figure 7-2 for PLL details
SOSCO
OSCI
SOSCI
OSCILLATOR
CONFIGURATION
This data sheet summarizes the features
of
PIC24HJ16GP304 devices. It is not
intended to be a comprehensive reference
source. To complement the information in
this data sheet, refer to the “PIC24H
Family Reference Manual”.
PIC24HJ32GP202/204 and PIC24HJ16GP304
Oscillator
TUN<5:0>
FRC
the
Primary Oscillator
Secondary Oscillator
Oscillator
PIC24HJ32GP202/204 AND PIC24HJ16GP304 OSCILLATOR SYSTEM DIAGRAM
PIC24HJ32GP202/204
LPRC
LPOSCEN
S1
S3
÷ 16
FRCDIV<2:0>
and
PLL
Preliminary
(1)
PIC24H
XTPLL, HSPLL,
ECPLL, FRCPLL
Clock Fail
• An internal FRC oscillator that can also be used
• 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 7-1.
S7
XT, HS, EC
FRCDIV16
with 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>
DS-70289A-page 81
WDT, PWRT,
Timer 1
FSCM
F
F
OSC
CY