PIC16C65A Microchip Technology, PIC16C65A Datasheet - Page 43

• Manufacturer Part Number: PIC16C65A
• Description: 8-Bit CMOS Microcontrollers
• Manufacturer: Microchip Technology

FIGURE 4-18: PIR1 REGISTER FOR PIC16C64/64A/R64 (ADDRESS 0Ch)
1997 Microchip Technology Inc.
bit7
bit 7:
bit 6:
bit 5-4:
bit 3:
bit 2:
bit 1:
bit 0:
R/W-0
PSPIF
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 software should ensure the appropriate interrupt flag bits are clear prior to
enabling an interrupt.
PSPIF: Parallel Slave Port Interrupt Flag bit
1 = A read or a write operation has taken place (must be cleared in software)
0 = No read or write operation has taken place
Reserved: Always maintain this bit clear.
Unimplemented: Read as '0'
SSPIF: Synchronous Serial Port Interrupt Flag bit
1 = The transmission/reception is complete (must be cleared in software)
0 = Waiting to transmit/receive
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
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
TMR1IF: TMR1 Overflow Interrupt Flag bit
1 = TMR1 register overflow occurred (must be cleared in software)
0 = No TMR1 register occurred
R/W-0
—
U-0
—
U-0
—
SSPIF
R/W-0
CCP1IF
R/W-0
TMR2IF
R/W-0
TMR1IF
R/W-0
bit0
W = Writable bit
U = Unimplemented bit,
- n = Value at POR reset
R = Readable bit
read as ‘0’
PIC16C6X
DS30234D-page 43