Datasheet

8023F–AVR–07/09

ATmega325P/3250P

• PCINT20 – Port H, Bit 4

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

source.

• PCINT19– Port H, Bit 3

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

source.

• PCINT18 – Port H, Bit 2

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

source.

• PCINT17/SEG – Port H, Bit 1

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

source.

SEG, LCD front plane 9.

• PCINT16 – Port H, Bit 0

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

source.

Table 13-17 and Table 13-18 relates the alternate functions of Port H to the overriding signals

shown in Figure 13-5 on page 69.

Table 13-17. Overriding Signals for Alternate Functions in PH7:4

Signal Name PH7/PCINT23 PH6/PCINT22 PH5/PCINT21 PH4/PCINT20

PUOE0000

PUOV0000

DDOE0000

DDOV0000

PVOE0000

PVOV0000

PTOE––––

DIEOE PCINT23 • PCIE0 PCINT22 • PCIE0 PCINT21 • PCIE0 PCINT20 • PCIE0

DIEOV0000

DI PCINT23 INPUT PCINT22 INPUT PCINT21 INPUT PCINT20 INPUT

AIO––––