DSPIC33FJ12MC202 Microchip Technology Inc., DSPIC33FJ12MC202 Datasheet - Page 95
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DSPIC33FJ12MC202
Manufacturer Part Number
DSPIC33FJ12MC202
Description
High-performance, 16-bit Digital Signal Controllers
Manufacturer
Microchip Technology Inc.
Datasheet
1.DSPIC33FJ12MC202.pdf
(284 pages)
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7.0
The
provides:
• External and internal oscillator options as clock
FIGURE 7-1:
© 2007 Microchip Technology Inc.
Note:
sources
OSCO
SOSCO
OSCI
SOSCI
Note 1: See Figure 7-2 for PLL details.
dsPIC33FJ12MC201/202
OSCILLATOR
CONFIGURATION
This data sheet summarizes the features
of the dsPIC33FJ12MC201/202 devices.
It is not intended to be a comprehensive
reference source. To complement the
information in this data sheet, refer to the
“dsPIC33F Family Reference Manual”.
Please see the Microchip web site
(www.microchip.com)
dsPIC33F
chapters.
Oscillator
TUN<5:0>
FRC
Primary Oscillator
Secondary Oscillator
dsPIC33FJ12MC201/202 OSCILLATOR SYSTEM DIAGRAM
Oscillator
LPRC
Family
LPOSCEN
Reference
S1
S3
÷ 16
oscillator
for
FRCDIV<2:0>
the
Manual
system
latest
PLL
Preliminary
(1)
dsPIC33FJ12MC201/202
dsPIC33F
XTPLL, HSPLL,
ECPLL, FRCPLL
Clock Fail
• An on-chip Phase-Locked Loop (PLL) to scale the
• 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
internal operating frequency to the required
system clock frequency
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>
S5
S4
S1/S3
S7
S6
S0
S2
÷ 2
Reset
DOZE<2:0>
WDT, PWRT,
DS70265B-page 93
Timer 1
FSCM
F
F
OSC
CY
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