Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Data Sheet
Product codes
AT32UC3A3-XPLD
400
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
7
6
5
4
3
2
1
0
P7
P6
P5
P4
P3
P2
P1
P0