Atmel SAM4L-EK Atmel ATSAM4L-EK ATSAM4L-EK Data Sheet
Product codes
ATSAM4L-EK
564
42023E–SAM–07/2013
ATSAM4L8/L4/L2
23.7.15
Interrupt Flag Register
Name:
IFR
Access:
Read, Clear
Offset:
0x0D0, 0x0D8
Reset Value:
-
• P0-31: Interrupt Flag
0: No interrupt condition has been detected on the corresponding pin.
1: An interrupt condition has been detected on the corresponding pin.
The number of interrupt request lines depends on the number of GPIO 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 one.
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