The SN9C281A is a USB 2.0 High-Speed (HS) compatible PC camera controller. The low power design provides extreme low consumption on device standby, operation and even high performance state. The low thermal design gets the module operating temperature inside platform under reasonable range. The SN9C281A is fully compliant with USB Video Class. The OS systems supported are including Windows XP, Windows Vista, Windows 7 and Windows 8. )


  • 3.3V, 1.2V power supply are necessary (Core power 1.2V provide by Backend IC )
  • Extreme low power consumption, < 30mA when standby and < 0.5mA when suspend (Power consumption of sensor is not included)
  • Built-in Clock Synthesizer for performance and power saving
  • Using external serial flash to store customized code and data
  • 1.8V output power source to supply CMOS sensor’s I/O power
  • QFN package of 32-pins
  • Pin-to-pin compatible to SN9C271A
  • 2.8V output power source to supply CMOS sensor’s analog power(2.7V~3.3V control by FW setting)
  • No external RAM needed
  • Built-in PLL for internal clock generation


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