ATMEGA8L ATMEL [ATMEL Corporation], ATMEGA8L Datasheet - Page 66

• Manufacturer Part Number: ATMEGA8L
• Description: 8-bit AVR with 8K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

General Interrupt Flag
Register – GIFR
66
ATmega8(L)
• Bit 7 – INTF1: External Interrupt Flag 1
When an event on the INT1 pin triggers an interrupt request, INTF1 becomes set (one).
If the I-bit in SREG and the INT1 bit in GICR are set (one), the MCU will jump to the cor-
responding Interrupt Vector. The flag is cleared when the interrupt routine is executed.
Alternatively, the flag can be cleared by writing a logical one to it. This flag is always
cleared when INT1 is configured as a level interrupt.
• Bit 6 – INTF0: External Interrupt Flag 0
When an event on the INT0 pin triggers an interrupt request, INTF0 becomes set (one).
If the I-bit in SREG and the INT0 bit in GICR are set (one), the MCU will jump to the cor-
responding Interrupt Vector. The flag is cleared when the interrupt routine is executed.
Alternatively, the flag can be cleared by writing a logical one to it. This flag is always
cleared when INT0 is configured as a level interrupt.
Bit
Read/Write
Initial Value
INTF1
R/W
7
0
INTF0
R/W
6
0
R
5
–
0
R
4
–
0
R
3
–
0
R
2
–
0
R
1
–
0
2486M–AVR–12/03
R
0
–
0
GIFR