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Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet

Product codes
ATSAM4S-WPIR-RD
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SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
31.7.30 PIO Pad Pull-Down Disable Register
Name:
PIO_PPDDR
Address:
0x400E0E90 (PIOA), 0x400E1090 (PIOB), 0x400E1290 (PIOC)
Access:
Write-only 
This register can only be written if the WPEN bit is cleared in 
.
• P0-P31: Pull-Down Disable
0: No effect.
1: Disables the pull-down resistor on the I/O line.
31.7.31 PIO Pad Pull-Down Enable Register
Name:
PIO_PPDER
Address:
0x400E0E94 (PIOA), 0x400E1094 (PIOB), 0x400E1294 (PIOC)
Access:
Write-only 
This register can only be written if the WPEN bit is cleared in 
.
• P0-P31: Pull-Down Enable
0: No effect.
1: Enables the pull-down resistor 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