Smart Module Series
SC20_Series_Hardware_Design 54 / 133
3.16. ADC Interfaces
SC20 series provides three analog-to-digital converter (ADC) interfaces, and the pin definition is shown
below.
Table 20: Pin Definition of ADC Interfaces
The resolution of the ADC pin is up to 16 bits and the effective resolution is 12 bits.
When the input voltage exceeds the maximum input voltage of the VBAT_SNS pin, apply the voltage
division design via the ADC pin instead of VBAT_SNS.
3.17. Motor Drive Interface
The pin definition of motor drive interface is listed below.
SENSOR_I2C_SCL 91 OD
I2C clock signal for external
sensor
Used for external sensor
SENSOR_I2C_SDA 92 OD
I2C data signal for external
sensor
Pin Name Pin No.
I/O
Description Comment
ADC 128 AI General purpose ADC Maximum input voltage: 1.7 V.
VBAT_SNS 133 AI Battery voltage detect Maximum input voltage: 4.5 V.
VBAT_THERM 134 AI Battery temperature detect
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.
NOTE
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