SN8F2280 Series
USB 2.0 Full-Speed 8-Bit Micro-Controller
12.8 ADC CIRCUIT
The analog signal is inputted to ADC input pin “AINn/P4.n”. The ADC input signal must be through a 0.1uF capacitor
“A”. The 0.1uF capacitor is set between ADC input pin and VSS pin, and must be on the side of the ADC input pin as
possible. Don’t connect the capacitor’s ground pin to ground plain directly, and must be through VSS pin. The capacitor
can reduce the power noise effective coupled with the analog signal.
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