Product Specs

20 GPIO — General purpose input/output
Page
128
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
Set 1 Write: writing a '1' sets pin to output; writing a '0' has no effect
e
RW PIN30
Input
0
Set as output pin 30
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
f
RW PIN31
Input
0
Set as output pin 31
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
20.3.7 DIRCLR
Address offset: 0x51C
DIR clear 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 input pin 0
Read: pin set as input
Output
1
Read: pin set as output
Clear
1
Write: writing a '1' sets pin to input; writing a '0' has no effect
B
RW
PIN1
Set as input pin 1
Input
0
Read: pin set as input
Output
1
Read: pin set as output
Clear
1
Write: writing a '1' sets pin to input; writing a '0' has no effect
C
RW
PIN2
Set as input pin 2
Input
0
Read: pin set as input
Output
1
Read: pin set as output
Clear
1
Write: writing a '1' sets pin to input; writing a '0' has no effect
D
RW
PIN3
Set as input pin 3
Input
0
Read: pin set as input
Output
1
Read: pin set as output
Clear
1
Write: writing a '1' sets pin to input; writing a '0' has no effect
E
RW
PIN4
Set as input pin 4
Input
0
Read: pin set as input
Output
1
Read: pin set as output
Clear
1
Write: writing a '1' sets pin to input; writing a '0' has no effect
F
RW
PIN5
Set as input pin 5
Input
0
Read: pin set as input
Output
1
Read: pin set as output
Clear
1
Write: writing a '1' sets pin to input; writing a '0' has no effect
G
RW
PIN6
Set as input pin 6
Input
0
Read: pin set as input
Output
1
Read: pin set as output
Clear
1
Write: writing a '1' sets pin to input; writing a '0' has no effect
H
RW
PIN7
Set as input pin 7
Input
0
Read: pin set as input
Output
1
Read: pin set as output
Clear
1
Write: writing a '1' sets pin to input; writing a '0' has no effect
I
RW
PIN8
Set as input pin 8
Input
0
Read: pin set as input