PIC16 datasheet(80/418 Pages) MICROCHIP

80 / 418 page

PIC16(L)F1508/9

DS40001609C-page 80

 2011-2013 Microchip Technology Inc.

PIR1: PERIPHERAL INTERRUPT REQUEST REGISTER 1

R/W-0/0

U-0

R/W-0/0

TMR1GIF

ADIF

RCIF

TXIF

SSP1IF

—

TMR2IF

TMR1IF

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

u = Bit is unchanged

x = Bit is unknown

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

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 7

TMR1GIF: Timer1 Gate Interrupt Flag bit

1 = Interrupt is pending

0 = Interrupt is not pending

bit 6

ADIF: ADC 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

Unimplemented: Read as ‘0’

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

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 of the INTCON

appropriate interrupt flag bits are clear prior

to enabling an interrupt.

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