ATMEGA325 datasheet(76/353 Pages) ATMEL

76 / 353 page

ATmega325/3250/645/6450

2570J–AVR–11/06

Alternate Functions of Port H

Port H is only present in ATmega3250/6450. The alternate pin configuration is as

follows:

The alternate pin configuration is as follows:

• PCINT23 – Port H, Bit 7

PCINT23, Pin Change Interrupt Source 23: The PH7 pin can serve as an external inter-

rupt source.

• PCINT22 – Port H, Bit 6

PCINT22, Pin Change Interrupt Source 22: The PH6 pin can serve as an external inter-

rupt source.

• PCINT21 – Port H, Bit 5

PCINT21, Pin Change Interrupt Source 21: The PH5 pin can serve as an external inter-

rupt source.

• PCINT20 – Port H, Bit 4

PCINT20, Pin Change Interrupt Source 20: The PH4 pin can serve as an external inter-

rupt source.

• PCINT19 – Port H, Bit 3

PCINT19, Pin Change Interrupt Source 19: The PH3 pin can serve as an external inter-

rupt source.

• PCINT18 – Port H, Bit 2

PCINT18, Pin Change Interrupt Source 18: The PH2 pin can serve as an external inter-

rupt source.

• PCINT17 – Port H, Bit 1

PCINT17, Pin Change Interrupt Source 17: The P1 pin can serve as an external inter-

rupt source.

• PCINT16 – Port H, Bit 0

PCINT16, Pin Change Interrupt Source 16: The PH0 pin can serve as an external inter-

rupt source.

Table 40. Port H Pins Alternate Functions

Port Pin

Alternate Function

PH7

PCINT23 (Pin Change Interrupt23)

PH6

PCINT22 (Pin Change Interrupt22)

PH5

PCINT21 (Pin Change Interrupt21)

PH4

PCINT20 (Pin Change Interrupt20)

PH3

PCINT19 (Pin Change Interrupt19)

PH2

PCINT18 (Pin Change Interrupt18)

PH1

PCINT17 (Pin Change Interrupt17)

PH0

PCINT16 (Pin Change Interrupt16)

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