If an external capacitor is used on
the analog reference pin (AREF), it must be equal to or larger than 100 nF. Smaller
capacitor values can make the AREF buffer unstable with large ringing, which will reduce
the accuracy of the ADC. Work aroundNone.
Affected Silicon Revisions
ATmega48PB/88PB
ATmega168PB
Rev. A
Rev. B
Rev. K
Rev. M
Rev. A
Rev. B
Rev. C
Rev. N
Rev. O
X
X
-
-
X
X
X
-
-
The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.
