PIC12F1822T-I/SL View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC12F1822T-I/SL

8/14-Pin Flash Microcontrollers with nanoWatt XLP Technology

Microchip Technology 

PIC12F/LF1822/16F/LF1823

8.5.4 PIR1 REGISTER

The PIR1 register contains the interrupt flag bits, as

shown in Register 8-4.

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 software should ensure the

appropriate interrupt flag bits are clear prior

to enabling an interrupt.

REGISTER 8-4: PIR1: PERIPHERAL INTERRUPT REQUEST REGISTER 1

R/W-0/0

TMR1GIF

bit 7

R/W-0/0

ADIF

R-0/0

RCIF

R-0/0

TXIF

R/W-0/0

SSP1IF

R/W-0/0

CCP1IF

R/W-0/0

TMR2IF

R/W-0/0

TMR1IF

bit 0

Legend:

R = Readable bit

u = Bit is unchanged

‘1’ = Bit is set

W = Writable bit

x = Bit is unknown

‘0’ = Bit is cleared

U = Unimplemented bit, read as ‘0’

-n/n = Value at POR and BOR/Value at all other Resets

bit 7

TMR1GIF: Timer1 Gate Interrupt Flag bit

1 = Interrupt is pending

0 = Interrupt is not pending

bit 6

ADIF: A/D Converter Interrupt Flag bit

1 = Interrupt is pending

0 = Interrupt is not pending

bit 5

RCIF: USART Receive Interrupt Flag bit

1 = Interrupt is pending

0 = Interrupt is not pending

bit 4

TXIF: USART Transmit Interrupt Flag bit

1 = Interrupt is pending

0 = Interrupt is not pending

bit 3

SSP1IF: Synchronous Serial Port (MSSP) Interrupt Flag bit

1 = Interrupt is pending

0 = Interrupt is not pending

bit 2

CCP1IF: CCP1 Interrupt Flag bit

1 = Interrupt is pending

0 = Interrupt is not pending

bit 1

TMR2IF: Timer2 to PR2 Interrupt Flag bit

1 = Interrupt is pending

0 = Interrupt is not pending

bit 0

TMR1IF: Timer1 Overflow Interrupt Flag bit

1 = Interrupt is pending

0 = Interrupt is not pending

DS41413A-page 92

Preliminary

 2010 Microchip Technology Inc.

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