AV
CC
AV
CC
is the supply voltage pin for the A/D Converter, Port C (3..0), and ADC (7..6). It
should be externally connected to V
CC
, even if the ADC is not used. If the ADC is used,
it should be connected to V
CC
through a low-pass filter. Note that Port C (5..4) use digital
supply voltage, V
CC
.
AREF is the analog reference pin for the A/D Converter.
In the TQFP and QFN/MLF package, ADC7..6 serve as analog inputs to the A/D con-
verter. These pins are powered from the analog supply and serve as 10-bit ADC
channels.
AREF
ADC7..6 (TQFP and QFN/MLF
Package Only)
6
ATmega8(L)
2486QS–AVR–10/06