Atmel Xplained Pro Evaluation Kit ATSAMD20-XPRO ATSAMD20-XPRO Data Sheet
Product codes
ATSAMD20-XPRO
301
Atmel | SMART SAM D20 [DATASHEET]
Atmel-42129K–SAM-D20_datasheet–06/2014
21.8.11 Write Configuration
This write-only register is used to configure several pins simultaneously with the same configuration and/or peripheral
multiplexing.
multiplexing.
In order to avoid the side effect of non-atomic access, 8-bit or 16-bit writes to this register will have no effect. Reading this
register always returns zero.
register always returns zero.
Name:
WRCONFIG
Offset:
0x28+x*0x80 [x=0..1]
Reset:
0x00000000
Property:
Write-Protected
z
Bit 31 – HWSEL: Half-Word Select
This bit selects the half-word field of a 32-pin group to be reconfigured in the atomic write operation.
This bit selects the half-word field of a 32-pin group to be reconfigured in the atomic write operation.
0: The lower 16 pins of the PORT group will be configured.
1: The upper 16 pins of the PORT group will be configured.
This bit will always read as zero.
z
Bit 30 – WRPINCFG: Write PINCFG
This bit determines whether the atomic write operation will update the Pin Configuration register (PINCFGy) or not
for all pins selected by the WRCONFIG.PINMASK and WRCONFIG.HWSEL bits.
This bit determines whether the atomic write operation will update the Pin Configuration register (PINCFGy) or not
for all pins selected by the WRCONFIG.PINMASK and WRCONFIG.HWSEL bits.
0: The PINCFGy registers of the selected pins will not be updated.
1: The PINCFGy registers of the selected pins will be updated.
Writing a zero to this bit has no effect.
Bit
31
30
29
28
27
26
25
24
HWSEL
WRPINCFG
WRPMUX
PMUX[3:0]
Access
W
W
R
W
W
W
W
W
Reset
0
0
0
0
0
0
0
0
Bit
23
22
21
20
19
18
17
16
DRVSTR
PULLEN
INEN
PMUXEN
Access
R
W
R
W
W
W
W
W
Reset
0
0
0
0
0
0
0
0
Bit
15
14
13
12
11
10
9
8
PINMASK[15:8]
Access
W
W
W
W
W
W
W
W
Reset
0
0
0
0
0
0
0
0
Bit
7
6
5
4
3
2
1
0
PINMASK[7:0]
Access
W
W
W
W
W
W
W
W
Reset
0
0
0
0
0
0
0
0