Atmel SAM4L Xplained Pro Starter Kit Atmel ATSAM4L-XSTK ATSAM4L-XSTK Data Sheet
Product codes
ATSAM4L-XSTK
558
42023E–SAM–07/2013
ATSAM4L8/L4/L2
23.7.9
Pull-up Enable Register
Name:
PUER
Access:
Read/Write, Set, Clear, Toggle
Offset:
0x070, 0x074, 0x078, 0x07C
Reset Value:
-
• P0-31: Pull-up Enable
Writing a zero to a bit in this register will disable pull-up on the corresponding pin.
Writing a one to a bit in this register will enable pull-up on the corresponding pin.
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