PIC16F872 Datasheet, PDF (18/160 Pages) Microchip Technology – 28-Pin, 8-Bit CMOS FLASH Microcontroller

PIC16F872
2.2.2.7 PIR2 REGISTER
The PIR2 register contains the flag bits for the SSP bus
collision interrupt and the EEPROM write operation
interrupt.
.
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.
REGISTER 2-7: PIR2 REGISTER (ADDRESS 0Dh)
U-0 R/W-0 U-0 R/W-0 R/W-0 U-0
U-0 R/W-0
—
—
—
EEIF BCLIF
—
bit7
—
—
R = Readable bit
bit0 ^{W = Writable bit}
U = Unimplemented bit,
read as ‘0’
- n= Value at POR reset
bit 7: Unimplemented: Read as '0'
bit 6: Reserved: Always maintain this bit clear
bit 5: Unimplemented: Read as '0'
bit 4:
EEIF: EEPROM Write Operation Interrupt Flag bit
1 = The write operation completed (must be cleared in software)
0 = The write operation is not complete or has not been started
bit 3:
BCLIF: Bus Collision Interrupt Flag
1 = A bus collision has occurred in the SSP, when configured for I²C master mode
0 = No bus collision has occurred
bit 2-1: Unimplemented: Read as '0'
bit 0: Reserved: Always maintain this bit clear
DS30221A-page 18
Preliminary
© 1999 Microchip Technology Inc.