Product Specs

Table Of Contents
20 GPIO General purpose input/output
Page
121
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
High
1
Read: pin driver is high
Clear
1
Write: writing a '1' sets the pin low; writing a '0' has no effect
W
RW
PIN22
Low
0
Pin 22
Read: pin driver is low
High
1
Read: pin driver is high
Clear
1
Write: writing a '1' sets the pin low; writing a '0' has no effect
X
RW
PIN23
Low
0
Pin 23
Read: pin driver is low
High
1
Read: pin driver is high
Clear
1
Write: writing a '1' sets the pin low; writing a '0' has no effect
Y
RW
PIN24
Low
High
Clear
0
1
1
Pin 24
Read: pin driver is low
Read: pin driver is high
Write: writing a '1' sets the pin low; writing a '0' has no effect
Z
RW
PIN25
Low
High
Clear
0
1
1
Pin 25
Read: pin driver is low
Read: pin driver is high
Write: writing a '1' sets the pin low; writing a '0' has no effect
a
RW
PIN26
Low
High
Clear
0
1
1
Pin 26
Read: pin driver is low
Read: pin driver is high
Write: writing a '1' sets the pin low; writing a '0' has no effect
b
RW
PIN27
Low
High
Clear
0
1
1
Pin 27
Read: pin driver is low
Read: pin driver is high
Write: writing a '1' sets the pin low; writing a '0' has no effect
c
RW
PIN28
Low
High
Clear
0
1
1
Pin 28
Read: pin driver is low
Read: pin driver is high
Write: writing a '1' sets the pin low; writing a '0' has no effect
d
RW
PIN29
Low
High
Clear
0
1
1
Pin 29
Read: pin driver is low
Read: pin driver is high
Write: writing a '1' sets the pin low; writing a '0' has no effect
e
RW
PIN30
Low
High
Clear
0
1
1
Pin 30
Read: pin driver is low
Read: pin driver is high
Write: writing a '1' sets the pin low; writing a '0' has no effect
f
RW
PIN31
Pin 31
Low 0 Read: pin driver is low
High 1 Read: pin driver is high
Clear 1 Write: writing a '1' sets the pin low; writing a '0' has no effect
20.3.4 IN
Address offset: 0x510
Read GPIO port
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 R PIN0
Pin 0
Low
0
Pin input is low
High
1
Pin input is high