PIC32MX220F032B-I/SO 查看數據表（PDF） - Microchip Technology

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PIC32MX220F032B-I/SO

32-bit Microcontrollers (up to 128 KB Flash and 32 KB SRAM) with Audio and Graphics Interfaces, USB, and Advanced Analog

Microchip Technology 

PIC32MX1XX/2XX

REGISTER 8-1: OSCCON: OSCILLATOR CONTROL REGISTER(1)

bit 2

UFRCEN: USB FRC Clock Enable bit(2)

1 = Enable FRC as the clock source for the USB clock source

0 = Use the Primary Oscillator or USB PLL as the USB clock source

bit 1

SOSCEN: Secondary Oscillator (SOSC) Enable bit

1 = Enable Secondary Oscillator

0 = Disable Secondary Oscillator

bit 0

OSWEN: Oscillator Switch Enable bit

1 = Initiate an oscillator switch to selection specified by NOSC<2:0> bits

0 = Oscillator switch is complete

Note 1: Writes to this register require an unlock sequence. Refer to Section 6. “Oscillator” (DS61112) in the

“PIC32 Family Reference Manual” for details.

2: This bit is available on PIC32MX2XX devices only.

© 2011 Microchip Technology Inc.

Preliminary

DS61168C-page 99

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