ATmega88PA Automotive Atmel Corporation, ATmega88PA Automotive Datasheet - Page 78
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ATmega88PA Automotive
Manufacturer Part Number
ATmega88PA Automotive
Description
Manufacturer
Atmel Corporation
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14.2.6
Unconnected Pins
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 V
or GND is not recommended, since this may cause excessive cur-
CC
rents if the pin is accidentally configured as an output.
Atmel ATmega48PA/88PA/168PA [Preliminary]
78
9223B–AVR–09/11
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