Quectel SC20 Series Hardware Design page 32

CAM1_RST
CAM1_PWD
CAM_I2C_SCL
CAM_I2C_SDA
Keypad Interfaces
Pin Name
PWRKEY
KEY_VOL_UP
KEY_VOL_DOWN
SENSOR_I2C Interface
Pin Name
SENSOR_I2C_
SCL
SENSOR_I2C_
SDA
ADC Interfaces
Pin Name
ADC
VBAT_SNS
VBAT_THERM
Antenna Interfaces
SC20_Series_Hardware_Design
Reset of front
81 DO
camera
Power down of
82 DO
front camera
I2C clock of
83 OD
camera
I2C data of
84 OD
camera
Pin
I/O Description
No.
Turns on/off the
114 DI
module
95 DI Volume up
96 DI Volume down
Pin
I/O Description
No.
I2C clock for
91 OD
external sensor
I2C data for
92 OD
external sensor
Pin
I/O Description
No.
General purpose
128 AI
ADC
Battery voltage
133 AI
detect
Battery
134 AI temperature
detect
Smart Module Series
DC Characteristics Comment
V max = 0.63 V
IL
V min = 1.17 V
IH
DC Characteristics Comment
DC Characteristics Comment
1.8 V power
domain.
1.8 V power
domain.
Internally pulled up
to 1.8 V. Active low.
If unused, keep this
pin open.
If unused, keep this
pin open.
1.8 V power
domain.
1.8 V power
domain.
Maximum input
voltage: 1.7 V.
Maximum input
voltage: 4.5 V.
Internally pulled up.
Externally connect
it to the 47 kΩ NTC
thermistor.
If it is not used,
connect it to GND
with a 47 kΩ
resistor.
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