Danke bereits für die Antworten.
Die letzte Schaltung beispielsweise kann ja per ISP programmiert werden,
von daher muss ja ein externer Reset erfolgen oder sehe ich das falsch?
Der interne Widerstand ist der Pull-Up Widerstand, richtig?
Im Datenblatt habe ich gefunden: If some pins are unused, it is
recommended to ensure that these pins have a defined
level. Even though most of the digital inputs are disabled in the deep
sleep modes as
described above, floating inputs should be avoided to reduce current
consumption in all
other modes where the digital inputs are enabled (Reset, Active mode and
Idle mode).
The simplest method to ensure a defined level of an unused pin, is to
enable the internal
pull-up. In this case, the pull-up will be disabled during reset. If low
power consumption
during reset is important, it is recommended to use an external pull-up
or pull-down.
Connecting unused pins directly to VCC or GND is not recommended, since
this may
cause excessive currents if the pin is accidentally configured as an
output.
