ATmega325P datasheet(80/364 Pages) ATMEL

80 / 364 page

8023F–AVR–07/09

ATmega325P/3250P

13.3.6

Alternate Functions of Port H

Port H is only present in ATmega3250P. 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 interrupt

source.

• PCINT22 – Port H, Bit 6

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

source.

• PCINT21 – Port H, Bit 5

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

source.

Table 13-15. Overriding Signals for Alternate Functions in PG4 and PG3

Signal Name

PG4/T0

PG3/T1

PUOE

PUOV

DDOE

DDOV

PVOE

PVOV

PTOE

–

DIEOE

DIEOV

T0 INPUT

T1 INPUT

AIO

–

Table 13-16. 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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