I am looking at the attiny261.
In the latest datasheet I could find on the atmel website, Rev2588a -10/6.
-There is a Pin labeled AVCC.
-No mention in the datsheet about hooking up an inductor and cap to the AVCC pin for noise reduction in the ADC section.
-On page 143, Fig 19-1, "ADC Block Schematic", it does not list AVCC as an input, instead it shows VCC
-On Page 3, Fig 2-1, "Block Diagram", it shows AVCC as input to the ADC.
I am used to the atmega168/88/48, and I know that for accurate ADC samples you need to hook up an inductor and cap to AVCC. The Attiny261 datasheet seems to have conflicting information as to the role of AVCC, what purpose does it really serve and if I decouple the pin with an inductor and cap will it reduce sample noise?
[CLIFF: I merged the three identical threads you started and deleted two copies of the OP - I assume it was an accident with an unresponsive [submit] button but if this happens again [X] the additional copies or contact a moderator]