PIC12F1822 MICROCHIP [Microchip Technology], PIC12F1822 Datasheet - Page 92

• Manufacturer Part Number: PIC12F1822
• Description: 8/14-Pin Flash Microcontrollers with nanoWatt XLP Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC12F/LF1822/16F/LF1823
8.5.4
The PIR1 register contains the interrupt flag bits, as
shown in Register 8-4.
REGISTER 8-4:
DS41413A-page 92
bit 7
Legend:
R = Readable bit
u = Bit is unchanged
‘1’ = Bit is set
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
TMR1GIF
R/W-0/0
PIR1 REGISTER
TMR1GIF: Timer1 Gate Interrupt Flag bit
1 = Interrupt is pending
0 = Interrupt is not pending
ADIF: A/D Converter Interrupt Flag bit
1 = Interrupt is pending
0 = Interrupt is not pending
RCIF: USART Receive Interrupt Flag bit
1 = Interrupt is pending
0 = Interrupt is not pending
TXIF: USART Transmit Interrupt Flag bit
1 = Interrupt is pending
0 = Interrupt is not pending
SSP1IF: Synchronous Serial Port (MSSP) Interrupt Flag bit
1 = Interrupt is pending
0 = Interrupt is not pending
CCP1IF: CCP1 Interrupt Flag bit
1 = Interrupt is pending
0 = Interrupt is not pending
TMR2IF: Timer2 to PR2 Interrupt Flag bit
1 = Interrupt is pending
0 = Interrupt is not pending
TMR1IF: Timer1 Overflow Interrupt Flag bit
1 = Interrupt is pending
0 = Interrupt is not pending
R/W-0/0
ADIF
PIR1: PERIPHERAL INTERRUPT REQUEST REGISTER 1
W = Writable bit
x = Bit is unknown
‘0’ = Bit is cleared
R-0/0
RCIF
R-0/0
TXIF
Preliminary
U = Unimplemented bit, read as ‘0’
-n/n = Value at POR and BOR/Value at all other Resets
R/W-0/0
SSP1IF
Note:
Interrupt flag bits are set when an interrupt
condition occurs, regardless of the state of
its corresponding enable bit or the Global
Enable bit, GIE, of the INTCON register.
User
appropriate interrupt flag bits are clear prior
to enabling an interrupt.
R/W-0/0
CCP1IF
software
 2010 Microchip Technology Inc.
R/W-0/0
TMR2IF
should
ensure
R/W-0/0
TMR1IF
bit 0
the