NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 290 -
Revision V1.30
NUC97
0
T
E
CHNIC
A
L
RE
F
E
RE
N
CE
MA
NUA
L
GPIO Port A-J Pull-Up Enable Register (GPIOx_PUEN)
Register
Offset
R/W
Description
Reset Value
GPIOA_PUEN
0x020
R/W
GPIO Port A Pull-Up Enable Register
0x0000_0000
GPIOB_PUEN
0x060
R/W
GPIO Port B Pull-Up Enable Register
0x0000_0000
GPIOC_PUEN
0x0A0
R/W
GPIO Port C Pull-Up Enable Register
0x0000_0000
GPIOD_PUEN
0x0E0
R/W
GPIO Port D Pull-Up Enable Register
0x0000_0000
GPIOE_PUEN
0x120
R/W
GPIO Port E Pull-Up Enable Register
0x0000_0000
GPIOF_PUEN
0x160
R/W
GPIO Port F Pull-Up Enable Register
0x0000_0000
GPIOG_PUEN
0x1A0
R/W
GPIO Port G Pull-Up Enable Register
0x0000_0000
GPIOH_PUEN
0x1E0
R/W
GPIO Port H Pull-Up Enable Register
0x0000_0000
GPIOI_PUEN
0x220
R/W
GPIO Port I Pull-Up Enable Register
0x0000_0000
GPIOJ_PUEN
0x260
R/W
GPIO Port J Pull-Up Enable Register
0x0000_0000
31
30
29
28
27
26
25
24
Reserved
23
22
21
20
19
18
17
16
Reserved
15
14
13
12
11
10
9
8
PUEN
7
6
5
4
3
2
1
0
PUEN
Bits
Description
[31:16]
Reserved
Reserved.
[15:0]
PUEN
GPIO Pull-up Enable
This field controls the pull-up resistor enable of the pin that can be configured as a
General-Purpose I/O.
This control bit always takes effect no matter the pin configured as a General-Purpose I/O
or not.
0: Disable pull-up function
1: Enable pull-up function
Note1:
For GPIOC, the PUEN[15] are reserved.
Note2:
For GPIOJ, the PUEN[15:5] are reserved.