Datasheet

76
ATmega325/3250/645/6450
2570K–AVR–04/07
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)