1 setting reference, 2 setting adc input port – SENA Rhio10 User Manual

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Figure 4-5 Setting ADC Input Port

4.4.1 Setting Reference

Specify a reference voltage for analog input data. Rhio represents voltage from 0 V to a

reference voltage in 1,024 steps. A reference voltage may not exceed 5 V. Specify a reference

voltage in the Reference list box.

Use Avcc: Specify Avcc (5V) as a reference voltage.

Use inside: Specify the internal reference voltage (2.56V) as a reference voltage.

Use Outside : Specify voltage issued to Aref as a reference voltage.

4.4.2 Setting ADC Input Port

Analog Input Port has two modes: Level mode and Switch mode.

Level mode: Display voltage from 0 V to a reference voltage in 1,024 steps (“0000” ~

“1023”).

Switch mode: Compare input voltage level to threshold level setting and send a state

change response when the input level is higher or lower than the threshold. An ADC

input recognizes it is changed only when it is changed larger than 8 steps from the pre-

configured threshold.