Atmel ATmega88PA Manual do Utilizador descarregar pdf (Página 4)

8161DS–AVR–10/09

ATmega48PA/88PA/168PA/328P

The various special features of Port D are elaborated in ”Alternate Functions of Port D” on page

82.

1.1.7 AV

is the supply voltage pin for the A/D Converter, PC3:0, and ADC7:6. It should be externally

connected to V

, even if the ADC is not used. If the ADC is used, it should be connected to V

through a low-pass filter. Note that PC6..4 use digital supply voltage, V

1.1.8 AREF

AREF is the analog reference pin for the A/D Converter.

1.1.9 ADC7:6 (TQFP and QFN/MLF Package Only)

In the TQFP and QFN/MLF package, ADC7:6 serve as analog inputs to the A/D converter.

These pins are powered from the analog supply and serve as 10-bit ADC channels.

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Atmel ATmega88PA Manual do Utilizador Página 4