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ATSAM4S-XPLD
533
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
30.7.17 PIO Interrupt Status Register
Name:
PIO_ISR
Address:
0x400E0E4C (PIOA), 0x400E104C (PIOB), 0x400E124C (PIOC)
Access:
Read-only
• P0-P31: Input Change Interrupt Status
0: No Input Change has been detected on the I/O line since PIO_ISR was last read or since reset.
1: At least one Input Change has been detected on the I/O line since PIO_ISR was last read or since reset.
30.7.18 PIO Multi-driver Enable Register
Name:
PIO_MDER
Address:
0x400E0E50 (PIOA), 0x400E1050 (PIOB), 0x400E1250 (PIOC)
Access:
Write-only
This register can only be written if the WPEN bit is cleared in
.
• P0-P31: Multi Drive Enable.
0: No effect.
1: Enables Multi Drive on the I/O line.
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
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