PIC18F2220/2320/4220/4320
REGISTER 9-5:
PIR2: PERIPHERAL INTERRUPT REQUEST (FLAG) REGISTER 2
R/W-0
OSCFIF
bit 7
R/W-0
CMIF
U-0
—
R/W-0
EEIF
R/W-0
BCLIF
R/W-0
LVDIF
R/W-0
R/W-0
TMR3IF
CCP2IF
bit 0
bit 7
bit 6
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
CMIF: Comparator Interrupt Flag bit
1= Comparator input has changed (must be cleared in software)
0= Comparator input has not changed
bit 5
bit 4
Unimplemented: Read as ‘0’
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
bit 2
bit 1
bit 0
BCLIF: Bus Collision Interrupt Flag bit
1= A bus collision occurred (must be cleared in software)
0= No bus collision occurred
LVDIF: Low-Voltage Detect Interrupt Flag bit
1= A low-voltage condition occurred (must be cleared in software)
0= The device voltage is above the Low-Voltage Detect trip point
TMR3IF: TMR3 Overflow Interrupt Flag bit
1= TMR3 register overflowed (must be cleared in software)
0= TMR3 register did not overflow
CCP2IF: CCPx Interrupt Flag bit
Capture mode:
1= A TMR1 register capture occurred (must be cleared in software)
0= No TMR1 register capture occurred
Compare mode:
1= A TMR1 register compare match occurred (must be cleared in software)
0= No TMR1 register compare match occurred
PWM mode:
Unused in this mode.
Legend:
R = Readable bit
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
- n = Value at POR
2003 Microchip Technology Inc.
DS39599C-page 93
MICROCHIP [ MICROCHIP ]
