Product Info

Smart Module Series
SC200R Series Hardware Design
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A reference design for the battery charging circuit is shown below.
Figure 10: Reference Design for Battery Charging Circuit
Mobile devices such as mobile phones or handheld POS systems are powered by batteries. For different
batteries, you should modify the charging and discharging curve correspondingly to achieve the best
performance.
If the thermistor is not available in the battery, or an adapter is utilized to power the module, you must
connect BAT_THERM to GND via a 47 kΩ resistor. Otherwise, the system may mistakenly judge that the
battery temperature is abnormal, and therefore cause battery charging failure.
BAT_SNS must be connected. Otherwise, the module will have abnormalities in voltage detection, as well
as associated problems with power-on/off and battery charging/discharging.
3.9. USB Interface
SC200R series module provides one integrated Universal Serial Bus (USB) interface which complies with
USB 2.0 specification and supports high speed (480 Mbps) and full-speed (12 Mbps) modes. The USB
interface supports USB OTG and is used for AT command communication, data transmission, software
debugging and firmware upgrade.