Smart Module Series
SC690A_Series_Hardware_Design 18 / 105
Audio Interfaces
Audio Inputs
3 analog microphone inputs
2 digital microphone inputs
Audio Outputs
Class AB stereo headphone output
Class AB earpiece differential output
Class AB LINE_OUT output
Audio Codec
Supports MP3; AAC; HE AAC v1, v2; FLAC; APE; ALAC; AIFF
(U)SIM Interface
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2 (U)SIM interfaces
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Supports USIM/SIM card: 1.8/2.95 V
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Supports Dual SIM Dual Standby (supported by default)
I2C Interface
5 I2C interfaces, used for peripherals such as TP, camera, sensor,
etc.
ADC Interfaces
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1 generic ADC interface
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Supports up to 15-bit resolution
Real Time Clock
Supported
USB Interface
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Compliant with USB 3.1 and 2.0 specifications, with transmission
rates up to 5 Gbps on USB 3.1 Gen1 and 480 Mbps on USB 2.0
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Supports USB OTG
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Used for AT command communication, data transmission,
software debugging, firmware upgrade.
SD Card Interface
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Supports SD 3.0 protocol
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Supports SD card hot-plug
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Supports 1.8/2.95 V SD card
UART Interfaces
UART5:
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Supports RTS and CTS hardware flow control
UART1:
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Supports RTS and CTS hardware flow control
Debug UART:
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Used for debugging
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Default baud rate: 115200 bps
Vibrator drive interface
Drive ERM vibrator
Flashlight Interface
2 high current flash and torch LED driver:
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1 A for flash mode and 300 mA for torch mode by default
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Maximum 1.5 A combined
Charging Interface
Used for battery voltage detection, fuel gauge, battery temperature
detection
Bluetooth Features
Supports
Bluetooth 5.1
Supports BR/EDR/BLE
GNSS Features
GPS/GLONASS/BeiDo
u/Galileo
Antenna Interface
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ANT_MAIN
