Datasheet

32072H–AVR32–10/2012

AT32UC3A3

20.6.13 Interrupt Flag Register

Name: IFR

Access Type: Read, Clear

Offset: 0xD0, 0xD8

Reset Value: -

• P0-31: Interrupt Flag

1: An interrupt condition has been detected on the corresponding pin.

0: No interrupt condition has beedn detected on the corresponding pin since reset or the last time it was cleared.

The number of interrupt request lines is dependant on the number of I/O pins on the MCU. Refer to the product specific data for

details. Note also that a bit in the Interrupt Flag register is only valid if the corresponding bit in IER is set.

31 30 29 28 27 26

25 24

P31 P30 P29 P28 P27 P26 P25 P24

23 22 21 20 19 18 17 16

P23 P22 P21 P20 P19 P18 P17 P16

15 14 13 12 11 10 9 8

P15 P14 P13 P12 P11 P10 P9 P8

76543210

P7 P6 P5 P4 P3 P2 P1 P0