Atmel Xplained Pro Evaluation Kit for the ATSAMD21J18A Microcontroller ATSAMD21-XPRO ATSAMD21-XPRO Data Sheet
Product codes
ATSAMD21-XPRO
378
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181C–SAM-D21_Datasheet–07/2014
22.8.1 Data Direction
Name:
DIR
Offset:
0x00+x*0x80 [x=0..2]
Reset:
0x00000000
Property:
Write-Protected
z
Bits 31:0 – DIR[31:0]: Port Data Direction
These bits set the data direction for the individual I/O pins in the PORT group.
0: The corresponding I/O pin in the group is configured as an input.
1: The corresponding I/O pin in the group is configured as an output.
These bits set the data direction for the individual I/O pins in the PORT group.
0: The corresponding I/O pin in the group is configured as an input.
1: The corresponding I/O pin in the group is configured as an output.
Bit
31
30
29
28
27
26
25
24
DIR[31:24]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bit
23
22
21
20
19
18
17
16
DIR[23:16]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bit
15
14
13
12
11
10
9
8
DIR[15:8]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bit
7
6
5
4
3
2
1
0
DIR[7:0]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0