Product Specs

20 GPIO — General purpose input/output
Page
125
Bit number
31 30
29
28
27
26
25
24
23 22 21 20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Id
f e
d
c
b
a
Z
Y
X W V U
T
S
R
Q
P
O
N
M
L
K
J
I
H
G
F
E
D
C
B
A
Reset 0x00000000
0 0
0
0
0
0
0
0
0 0 0 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Id
RW Field
Value Id
Value
Description
Output
1
Pin set as output
V
RW
PIN21
Input
0
Pin 21
Pin set as input
Output
1
Pin set as output
W
RW
PIN22
Input
Output
0
1
Pin 22
Pin set as input
Pin set as output
X
RW
PIN23
Input
Output
0
1
Pin 23
Pin set as input
Pin set as output
Y
RW
PIN24
Input
Output
0
1
Pin 24
Pin set as input
Pin set as output
Z
RW
PIN25
Input
Output
0
1
Pin 25
Pin set as input
Pin set as output
a
RW
PIN26
Input
Output
0
1
Pin 26
Pin set as input
Pin set as output
b
RW
PIN27
Input
Output
0
1
Pin 27
Pin set as input
Pin set as output
c
RW
PIN28
Input
Output
0
1
Pin 28
Pin set as input
Pin set as output
d
RW
PIN29
Input
Output
0
1
Pin 29
Pin set as input
Pin set as output
e
RW
PIN30
Input
Output
0
1
Pin 30
Pin set as input
Pin set as output
f
RW
PIN31
Input
0
Pin 31
Pin set as input
Output
1
Pin set as output
20.3.6 DIRSET
Address offset: 0x518
DIR set register
Read: reads value of DIR register.
Bit number
31 30
29
28
27
26
25
24
23 22 21 20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Id
f e
d
c
b
a
Z
Y
X W V U
T
S
R
Q
P
O
N
M
L
K
J
I
H
G
F
E
D
C
B
A
Reset 0x00000000
0 0
0
0
0
0
0
0
0 0 0 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Id
RW Field
Value Id
Value
Description
A
RW
PIN0
Input
0
Set as output pin 0
Read: pin set as input
Output
1
Read: pin set as output
Set
1
Write: writing a '1' sets pin to output; writing a '0' has no effect
B
RW
PIN1
Input
0
Set as output pin 1
Read: pin set as input
Output
1
Read: pin set as output
Set
1
Write: writing a '1' sets pin to output; writing a '0' has no effect
C
RW
PIN2
Set as output pin 2