PIC18F2455-I/SO【PDF 10/438 页】IC PIC MCU FLASH 12KX16 28SOIC

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Sheet目录3833

6页 7页 8页 9页 [10页]11页 12页 13页 14页

2009 Microchip Technology Inc.

DS39632E-page 105

PIC18F2455/2550/4455/4550

REGISTER 9-5:

PIR2: PERIPHERAL INTERRUPT REQUEST (FLAG) REGISTER 2

R/W-0

OSCFIF

CMIF

USBIF

EEIF

BCLIF

HLVDIF

TMR3IF

CCP2IF

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7

OSCFIF: Oscillator Fail Interrupt Flag bit

1 = System oscillator failed, clock input has changed to INTOSC (must be cleared in software)

0 = System clock operating

bit 6

CMIF: Comparator Interrupt Flag bit

1 = Comparator input has changed (must be cleared in software)

0 = Comparator input has not changed

bit 5

USBIF: USB Interrupt Flag bit

1 = USB has requested an interrupt (must be cleared in software)

0 = No USB interrupt request

bit 4

EEIF: Data EEPROM/Flash Write Operation Interrupt Flag bit

1 = The write operation is complete (must be cleared in software)

0 = The write operation is not complete or has not been started

bit 3

BCLIF: Bus Collision Interrupt Flag bit

1 = A bus collision has occurred (must be cleared in software)

0 = No bus collision occurred

bit 2

HLVDIF: High/Low-Voltage Detect Interrupt Flag bit

1 = A high/low-voltage condition occurred (must be cleared in software)

0 = No high/low-voltage event has occurred

bit 1

TMR3IF: TMR3 Overflow Interrupt Flag bit

1 = TMR3 register overflowed (must be cleared in software)

0 = TMR3 register did not overflow

bit 0

CCP2IF: CCP2 Interrupt Flag bit

Capture mode:

1 = A TMR1 or TMR3 register capture occurred (must be cleared in software)

0 = No TMR1 or TMR3 register capture occurred

Compare mode:

1 = A TMR1 or TMR3 register compare match occurred (must be cleared in software)

0 = No TMR1 or TMR3 register compare match occurred

PWM mode:

Unused in this mode.

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