Specifications

64
A
A
K
K
7
7
3
3
-
-
1
1
3
3
9
9
4
4
O
O
n
n
l
l
i
i
n
n
e
e
M
M
a
a
n
n
u
u
a
a
l
l
Hardware
Installation
G
G
P
P
O
O
(
(
G
G
e
e
n
n
e
e
r
r
a
a
l
l
P
P
u
u
r
r
p
p
o
o
s
s
e
e
O
O
u
u
t
t
p
p
u
u
t
t
)
)
C
C
o
o
n
n
n
n
e
e
c
c
t
t
o
o
r
r
GPO (General Purpose Output)
is an advanced specification developed by AOpen for power
users to define the further function by oneself. For example, you can design a daughter board to
provide additional capabilities, such as an alarm, a buzzer, a timekeeper, etc.
N/C
GND
+3.3V
GPO21
GPO19
GPIO 1
1
34
GPIO
1
Pin 1