Product Info

Smart LTE Module Series
SC20 Hardware Design
SC20_Hardware_Design 35 / 130
into SPI_MOSI.
GPIO_16
123
IO
GPIO
1.8V power domain.
GPIO_17
124
IO
GPIO
1.8V power domain.
Other Interfaces
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
VIB_DRV
28
PO
Motor drive
Imax=0~175mA
Vmax=1.2V~3.1V
Connected to the
negative terminal of
the motor.
RESET_N
2)
179
DI
Reset the module
Disabled by default
and can be enabled
through software
configuration.
USB_BOOT
46
DI
Force the module to
boot from USB port
Set USB_BOOT to
high level will force
the module to enter
into emergency
download mode.
CHARGE_
SEL
127
DI
Used for charger
selection
If it is open, internal
charger is used.
If it is connected to
GND, external
charger is used.
Reserved Interfaces
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
RESERVED
151, 152,
153, 154,
155, 156,
157, 158,
159, 183,
187, 190,
191, 194,
195, 196,
197, 199,
202, 203,
204, 205,
206, 207,
210
Reserved pins
Keep these pins
open.