PIC16F7X7
2.2.2.7
PIR2 Register
Note:
Interrupt flag bits are set when an interrupt
condition occurs regardless of the state of
its corresponding enable bit or the Global
Interrupt Enable bit, GIE (INTCON<7>).
User software should ensure the appropri-
ate interrupt flag bits are clear prior to
enabling an interrupt.
The PIR2 register contains the flag bits for the CCP2
interrupt.
REGISTER 2-7:
PIR2: PERIPHERAL INTERRUPT REQUEST (FLAG) REGISTER 2 (ADDRESS 0Dh)
R/W-0
OSFIF
R/W-0
CMIF
R/W-0
LVDIF
U-0
—
R/W-0
BCLIF
U-0
—
R/W-0
R/W-0
CCP2IF
bit 0
CCP3IF
bit 7
bit 7
bit 6
bit 5
OSFIF: Oscillator Fail Interrupt Flag bit
1= System oscillator failed, clock input has changed to INTRC (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
LVDIF: Low-Voltage Detect Interrupt Flag bit
1= The supply voltage has fallen below the specified LVD voltage (must be cleared in software)
0= The supply voltage is greater then the specified LVD voltage
bit 4
bit 3
Unimplemented: Read as ‘0’
BCLIF: Bus Collision Interrupt Flag bit
1= A bus collision has occurred in the SSP when configured for I2C Master mode
0= No bus collision has occurred
bit 2
bit 1
Unimplemented: Read as ‘0’
CCP3IF: CCP3 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.
bit 0
CCP2IF: CCP2 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.
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
2004 Microchip Technology Inc.
DS30498C-page 27
MICROCHIP [ MICROCHIP ]
