User's Manual

E
hon
g
T
6.2.
The m
o
charac
t
The R
E
freque
n
RESE
T
5ms.
A
t RES
The pu
l
6.3.
EH-MB
(3.3V).
throug
h
Note:
A
ll PIO
A
ny of
t
modes.
6.4.
EH-MB
functio
n
PIO.
T
echnolo
gy
C
o
Reset
o
dule may
b
t
er or via s
o
E
SETB pin i
n
cy clock o
s
T
B being ac
t
ETB the di
g
l
l-down sta
t
Pin
N
P
P
PIO
05 has a t
o
Their funct
i
h
software t
o
lines are c
o
t
he PIO lin
e
AIO
05 has 2 a
n
n
s can be c
o
o
., Ltd 
b
e reset fr
o
o
ftware con
f
s an active
s
cillator. A
R
t
ive. It is re
c
g
ital I/O pin
t
e is shown
N
ame / G
r
USB_DP
USB_DN
UART_RX
UART_TX
SPI_MOSI
SPI_CLK
SPI_CSB
SPI_MISO
RESETB
PIOs
PCM_IN
PCM_CLK
P
CM_SYN
C
P
CM_OUT
o
tal of 11 di
g
i
ons depen
d
o
have eith
e
o
nfigured a
s
e
s can be c
o
n
alogue I/
O
o
nfigured t
o
o
m several
f
igured wat
c
low RESE
T
R
ESETB wi
c
ommende
d
s are set t
o
below.
r
oup
C
Table
9
g
ital progra
m
d
on firmw
a
e
r weak or
s
s
inputs wi
t
o
nfigured a
O
terminals.
o
battery v
o
sources:
R
c
hdog time
r
T
B and is i
n
ll be perfor
m
d
that RES
E
o
inputs for
b
9
: Pin Statu
m
mable I/
O
a
re running
s
trong pull-
h weak pul
l
s interrupt
r
Their funct
i
o
ltage mea
s
R
ESETB pi
n
r
.
n
ternally filt
e
m
ed betwe
e
E
TB be ap
p
b
i-direction
a
Pi
n
s on Reset
O
terminals.
on the dev
i
ups or pull
-
l
-downs at
r
r
equest lin
e
i
ons depen
d
s
urement.
T
B
n
, powe
r
-o
n
e
red using
t
e
n 1.5 and
4
p
lied for a
p
a
l pins and
n
Status o
n
N/
a
N/
a
PD
PU
PD
PD
PU
PD
PU
PD
PD
PD
PD
PD
They are
p
i
ce. PIO lin
e
-
downs.
r
eset.
e
s or as wa
k
d
on softw
a
T
hey can al
s
B
luetooth Au
d
n
reset, a
U
t
he internal
4
.0ms follo
w
p
eriod great
outputs ar
e
n
RESET
B
a
a
p
owered fro
m
e
s can be
c
k
e-up lines
a
re. Typical
l
s
o be used
d
io Module
U
ART brea
k
low
w
ing
e
r than
e
tri-state.
B
m
VDD
c
onfigured
from sleep
l
y ADC
as a digital
k