SAM4N_14 Datasheet, PDF (447/795 Pages) ATMEL Corporation – ARM-based Flash MCU

28.7.32 PIO Pad Pull Down Status Register
Name:
PIO_PPDSR
Address: 0x400E0E98 (PIOA), 0x400E1098 (PIOB), 0x400E1298 (PIOC)
Access:
Read-only
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
This register can only be written if the WPEN bit is cleared in “PIO Write Protect Mode Register” .
• P0-P31: Pull Down Status
0: Pull Down resistor is enabled on the I/O line.
1: Pull Down resistor is disabled on the I/O line.
28.7.33 PIO Output Write Enable Register
Name:
PIO_OWER
Address: 0x400E0EA0 (PIOA), 0x400E10A0 (PIOB), 0x400E12A0 (PIOC)
Access:
Write-only
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
This register can only be written if the WPEN bit is cleared in “PIO Write Protect Mode Register” .
• P0-P31: Output Write Enable
0: No effect.
1: Enables writing PIO_ODSR for the I/O line.
SAM4N Series [DATASHEET]
11158A–ATARM–07-Jun-13
447