DSPIC30F1010-30I/SP【PDF 2/66 页】IC DSPIC MCU/DSP 6K 28DIP

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dsPIC30F Flash Programming Specification

DS70102K-page 10

2010 Microchip Technology Inc.

TABLE 5-5:

FOSC CONFIGURATION BITS DESCRIPTION FOR dsPIC30F4011/4012 AND

dsPIC30F5011/5013

Bit Field

Register

Description

FCKSM<1:0>

FOSC

Clock Switching Mode

1x = Clock switching is disabled, Fail-Safe Clock Monitor is disabled

01 = Clock switching is enabled, Fail-Safe Clock Monitor is disabled

00 = Clock switching is enabled, Fail-Safe Clock Monitor is enabled

FOS<1:0>

FOSC

Oscillator Source Selection on POR

FPR<3:0>

FOSC

Primary Oscillator Mode

1111 = ECIO w/PLL 16X – External Clock mode with 16X PLL. OSC2 pin is I/O

1110 = ECIO w/PLL 8X – External Clock mode with 8X PLL. OSC2 pin is I/O

1101 = ECIO w/PLL 4X – External Clock mode with 4X PLL. OSC2 pin is I/O

1100 = ECIO – External Clock mode. OSC2 pin is I/O

1011 = EC – External Clock mode. OSC2 pin is system clock output (FOSC/4)

1010 = FRC w/PLL 8x – Internal fast RC oscillator with 8x PLL. OSC2 pin is I/O

1001 = ERC – External RC Oscillator mode. OSC2 pin is system clock output

(FOSC/4)

1000 = ERCIO – External RC Oscillator mode. OSC2 pin is I/O

0111 = XT w/PLL 16X – XT Crystal Oscillator mode with 16X PLL

0110 = XT w/PLL 8X – XT Crystal Oscillator mode with 8X PLL

0101 = XT w/PLL 4X – XT Crystal Oscillator mode with 4X PLL

0100 =XT – XT Crystal Oscillator mode (4 MHz-10 MHz crystal)

0011 = FRC w/PLL 16x – Internal fast RC oscillator with 16x PLL. OSC2 pin is I/O

0010 =HS – HS Crystal Oscillator mode (10 MHz-25 MHz crystal)

0001 = FRC w/PLL 4x – Internal fast RC oscillator with 4x PLL. OSC2 pin is I/O

0000 =XTL – XTL Crystal Oscillator mode (200 kHz-4 MHz crystal)

11 = Primary Oscillator

10 = Internal Low-Power RC Oscillator

01 = Internal Fast RC Oscillator

00 = Low-Power 32 kHz Oscillator (Timer1 Oscillator)

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