Product Info

Smart LTE Module Series
SC66 Hardware Design
SC66_Hardware_Design 41 / 139
Pin Name
Pin
No.
I/O Description
DC
Characteristics
Comment
MI2S_2_WS 203 DO I2S word select signal 1.8V power domain.
MI2S_2_DATA0 249 IO I2S DATA0 signal 1.8V power domain.
MI2S_2_SCK 250 DO I2S serial clock signal 1.8V power domain.
MI2S_2_DATA1 251 IO I2S DATA1 signal 1.8V power domain.
MI2S_2_MCLK 114 DO I2S main clock signal 1.8V power domain.
LPI_MI2S_SCLK 212 DO
LPI_I2S serial clock
signal
1.8V power domain.
Cannot be multiplexed
into a general-purpose
GPIO.
LPI_MI2S_WS 156 DO LPI_I2S word select
LPI_MI2S_
DATA0
154 IO LPI_I2S signal data0
LPI_MI2S_
DATA1
155 IO LPI_I2S signal data1
Emergency Download Interface
Pin Name
Pin
No.
I/O Description
DC
Characteristics
Comment
USB_BOOT 57 DI
Force the module to
enter emergency
download mode
Pulled up to
LDO13A_1P8 during
power-up will force the
module to enter
emergency download
mode.
Other Interfaces
Pin Name
Pin
No.
I/O Description
DC
Characteristics
Comment
BAT_PLUS 27 AI
Battery vo
ltage detection
differential input (+)
Must be connected.
BAT_MINUS 28 AI
Battery voltage detection
differential input (-)
Must be connected.
BAT_THERM 29 AI
Battery temperature
detection
Internally pulled up.
Externally connected
to GND via a 47KΩ
NTC resistor.
GNSS_PPS_
OUT
202 DO LNA enable control
1.8V power domain;
It should not be pulled
up.