PIC16C781 Ver la hoja de datos (PDF) - Microchip Technology

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PIC16C781

8-Bit CMOS Microcontrollers with A/D, D/A, OPAMP, Comparators and PSMC

Microchip Technology 

PIC16C781/782

2.7 PIR1 Register

This register contains the individual flag bits for the

peripheral interrupts.

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 (INTCON<7>). User soft-

ware should ensure the appropriate inter-

rupt flag bits are clear prior to enabling an

interrupt.

REGISTER 2-5: PERIPHERAL INTERRUPT REGISTER (PIR1 0Ch)

R/W-0 R/W-0 R/W-0 R/W-0

U-0

U-0

LVDIF

ADIF

C2IF

C1IF

—

—

bit7

U-0

R/W-0

— TMR1IF

bit 0

bit 7

bit 6

bit 5

bit 4

bit 3-1

bit 0

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 than the specified LVD voltage

ADIF: Analog-to-Digital Converter Interrupt Flag bit

1 = An ADC conversion completed (must be cleared in software)

0 = The ADC conversion is not complete

C2IF: Comparator C2 Interrupt Flag bit

1 = Comparator C2 input has crossed the threshold (must be cleared in software)

0 = Comparator C2 input has not crossed the threshold

C1IF: Comparator C1 Interrupt Flag bit

1 = Comparator C1 input has crossed the threshold (must be cleared in software)

0 = Comparator C1 input has not crossed the threshold

Unimplemented: Read as ‘0’

TMR1IF: TMR1 Overflow Interrupt Flag bit

1 = TMR1 register overflowed (must be cleared in software)

0 = TMR1 register did not overflow

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

 2001-2013 Microchip Technology Inc.

Preliminary

DS41171B-page 21

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