ATMEGA649 datasheet(84/375 Pages) ATMEL

84 / 375 page

ATmega329/3210/649/6410

2552H–AVR–11/06

• PCINT28/SEG – Port J, Bit 4

PCINT28, Pin Change Interrupt Source 28: The PE28 pin can serve as an external inter-

rupt source.

SEG, LCD front plane 29.

• PCINT27/SEG – Port J, Bit 3

PCINT27, Pin Change Interrupt Source 27: The PE27 pin can serve as an external inter-

rupt source.

SEG, LCD front plane 30.

• PCINT26/SEG – Port J, Bit 2

PCINT26, Pin Change Interrupt Source 26: The PE26 pin can serve as an external inter-

rupt source.

SEG, LCD front plane 31.

• PCINT25/SEG – Port J, Bit 1

PCINT25, Pin Change Interrupt Source 25: The PE25 pin can serve as an external inter-

rupt source.

SEG, LCD front plane 34.

• PCINT24/SEG – Port J, Bit 0

PCINT24, Pin Change Interrupt Source 24: The PE24 pin can serve as an external inter-

rupt source.

SEG, LCD front plane 35.

Table 52 and Table 53 relates the alternate functions of Port J to the overriding signals

shown in Figure 27 on page 65.

Table 52. Overriding Signals for Alternate Functions in PJ7:4

Signal

Name

PJ6/PCINT30/

SEG27

PJ5/PCINT29/

SEG28

PJ4/PCINT28/

SEG29

PUOE

LCDEN

PUOV

DDOE

LCDEN

DDOV

PVOE

PVOV

PTOE

–

DIEOE

PCINT30 •

PCIE0 •LCDEN •

LCDPM

PCINT29 •

PCIE0 •LCDEN •

LCDPM

PCINT28 •

PCIE0 •LCDEN •

LCDPM

DIEOV

AIO

LCDSEG

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