MeiG_SLM156_Hardware Design Manual
MeiG Smart Technology Co., Ltd
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Power on/ off
Pin name
Pin number
I/O Description
DC features
Note
POWER_ON/OFF
53
DI
Power on /
standby
VIHmax=2.1V
VIHmin=1.3V
VILmax=0.5V
PON
54
DI
Power on /
standby
VIHmax=2.1V
VIHmin=1.3V
VILmax=0.5V
Status indication
Pin name
Pin number
I/O Description
DC features
Note
STATUS
39
O
D
Indicate the
operating state
of the module
SINK current
should be less
than
10mA
OD output,
external pull-up
is needed, if
unused, keep it
open
NETLIGHT
16
O
D
Indicate
network state of
the module
SINK current
should be less
than
10mA
OD output,
external pull-up
is needed, if
unused, keep it
open
USB interface
Pin name
Pin number
I/O Description
DC features
Note
VBUS
56
IO
USB detection
Vnorm=5.0V
USB_DM
50
IO
USB differential
data positive
signal
Compliant with
USB2.0 standard
Require
differential
impedance of
90Ω
USB_DP
49
IO
USB differential
data positive
signal
Compliant with
USB2.0 standard
Require
differential
impedance of
90Ω
USIM card interface
Pin name
Pin number
I/O Description
DC features
Note
USIM_DATA
67
IO
USIM card data
bus
1.8V USIM:
VILmax=0.6V
VIHmin=1.2V
VOLmax=0.45V
VOHmin=1.35V
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