PIC16C72T-02E 查看數據表（PDF） - Microchip Technology

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PIC16C72T-02E

8-Bit CMOS microcontroller with A,D converter

Microchip Technology 

PIC16C72 Series

2.2.2.5 PIR1 REGISTER

This register contains the individual flag bits for the

Peripheral interrupts.

FIGURE 2-7: PIR1 REGISTER (ADDRESS 0Ch)

Note:

Interrupt flag bits get 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.

U-0

R/W-0

U-0

—

ADIF

—

bit7

U-0

R/W-0

—

SSPIF

bit 7: Unimplemented: Read as '0'

R/W-0

CCP1IF

R/W-0

TMR2IF

R/W-0

TMR1IF

bit0

R = Readable bit

W = Writable bit

U = Unimplemented bit,

read as ‘0’

- n = Value at POR reset

bit 6:

ADIF: A/D Converter Interrupt Flag bit

1 = An A/D conversion completed (must be cleared in software)

0 = The A/D conversion is not complete

bit 5-4: Unimplemented: Read as '0'

bit 3:

SSPIF: Synchronous Serial Port Interrupt Flag bit

1 = The transmission/reception is complete (must be cleared in software)

0 = Waiting to transmit/receive

bit 2:

CCP1IF: CCP1 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 1:

TMR2IF: TMR2 to PR2 Match Interrupt Flag bit

1 = TMR2 to PR2 match occurred (must be cleared in software)

0 = No TMR2 to PR2 match occurred

bit 0:

TMR1IF: TMR1 Overflow Interrupt Flag bit

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

0 = TMR1 register did not overflow

© 1998 Microchip Technology Inc.

Preliminary

DS39016A-page 13

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