User's Manual

E
hon
g
T
5. Pi
n
5.1.
Pin
1
2
3
4
5
6
7
8
9
10
11
T
echnolo
gy
C
o
n
out an
d
Pin assi
Symbol
GND
RESET
B
SPI_CL
K
SPI_MIS
O
SPI_MO
S
SPI_CS
B
LED0
PIO3
PCM_OU
T
MIC_RP
MIC_RN
o
., Ltd 
d
Termi
n
gnment
l
Groun
d
B
CMO
S
intern
a
K
Input
w
down
O
CMO
S
weak i
S
I
CMO
S
intern
a
B
Input
w
up
Open
d
Bi-dir
e
progr
a
intern
a
T
CMO
S
weak i
A
nalo
g
A
nalo
g
n
al Des
c
Figure
I/O Ty
p
d
S
input with
a
l pull-up
w
ith weak i
n
S
output, tri
-
nternal pull
S
input, with
a
l pull-dow
n
w
ith weak i
n
d
rain outpu
ctional wit
h
mmable st
r
a
l pull-up/d
o
S
output, tri
-
nternal pull
g
ue
g
ue
c
ription
1： Pinout
o
p
e
weak
n
ternal pull-
-
state, with
-down
weak
n
n
ternal pull-
t
h
r
ength
o
wn
-
state, with
-down
o
f EH-MB0
5
Ground
A
ctive L
O
so must
RESET
B
Serial P
e
program
Serial P
e
program
Serial P
e
program
Chip sel
e
Interfac
e
low
LED Dri
v
Progra
m
Synchro
n
Microph
o
Microph
o
B
5
Des
c
O
W RESE
T
be low for
>
B
e
ripheral in
t
ming only
e
ripheral In
t
ming only
e
ripheral In
t
ming only
e
ct for Syn
c
e
for progra
m
v
e
r
m
mable inp
u
n
ous Data
O
o
ne input p
o
o
ne input n
e
B
luetooth Au
d
c
ription
T
B, input d
e
>
5ms to ca
u
t
erface clo
c
t
erface out
p
t
erface inp
u
c
hronous S
e
m
ming onl
y
u
t/output lin
e
O
utput
o
sitive, righ
e
gative, rig
h
d
io Module
e
bounced
u
se a
c
k for
p
ut for
u
t for
e
rial
y
, active
e
t
h
t