Datasheet

Note: 5V range: Max. R
load
30KΩ. 3V range: Max. R
load
15KΩ.
23.2.2. Voltage Reference for External Devices
An external resistor used in conjunction with the current source can be used as voltage reference for
external devices. Using a resistor in series with a lower tolerance than the Current Source accuracy
(≤2%) is recommended. The tables above give examples of voltage references using standard values of
resistors.
23.2.3. Threshold Reference for Internal Analog Comparator
An external resistor used in conjunction with the current source can be used as threshold reference for
the internal Analog Comparator. This can be connected to AIN0 (negative Analog Compare input pin) as
well as AIN1 (positive Analog Compare input pin). Using a resistor in series with a lower tolerance than
the Current Source accuracy (≤2%) is recommended. The tables above give examples of threshold
references using standard values of resistors.
23.3. Register Description
Atmel ATmega16M1/32M1/64M1 [DATASHEET]
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