Am a bit disappointed in the accuracy of the internal 2.56 volt reference used by the A/D converter. Have a nice 3.3 volts on the chip supply. A 0.1 uF ceramic cap across AREF and GND. Nothing connected to AVCC. Working the math backwards agrees with the voltage measured across the 0.1 uF capacitor, that my reference voltage varies from 2.44 to 2.60 on different units. Is this typical? -- David Kelly N4HHE, dkelly@HiWAAY.net ======================================================================== Whom computers would destroy, they must first drive mad.
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Internal Reference Voltage on ATmega64L?
2005-08-22 by David Kelly