21
(7) COM3/4/5/6 (9-pin): RS232 Serial Port Header
M
S
IN
-
M
S
O
-
G
N
D
M
R
T
S
-
Pin1
M
D
T
R
-
M
C
T
S
-
M
R
I-
Pin6
M
D
C
D
-
M
D
S
R
-
(8) GPIO (10-pin): GPIO Port Header
GND
VCC
Pin 1
2
SIO_GP40
SIO_G P42
SIO_G P44
SIO _GP46
SIO_G P41
SIO_G P43
SIO_G P45
SIO _G P47
GPIO
COM3
COM4
COM6
COM5