ATmega3290P datasheet(75/385 Pages) ATMEL

75 / 385 page

8021E–AVR–07/09

ATmega329P/3290P

13.3.4

Alternate Functions of Port D

The Port D pins with alternate functions are shown in Table 13-12.

The alternate pin configuration is as follows:

• SEG – Port D, Bit 7:2

SEG, LCD front plane 19/15-24/20.

•INT0/SEG – Port D, Bit 1

INT0, External Interrupt Source 0. The PD1 pin can serve as an external interrupt source to the

MCU.

SEG, LCD front plane 25/21.

• ICP1/SEG – Port D, Bit 0

ICP1 – Input Capture pin1: The PD0 pin can act as an Input Capture pin for Timer/Counter1.

SEG, LCD front plane 26/22

Table 13-11. Overriding Signals for Alternate Functions in PC3:PC0

Signal Name

PC3/SEG(13/9)

PC2/SEG(14/10)

PC1/SEG(15/11)

PC0/SEG(16/12)

PUOE

LCDEN

PUOV

0000

DDOE

LCDEN

DDOV

0000

PVOE

0000

PVOV

0000

PTOE

––––

DIEOE

LCDEN

DIEOV

0000

––––

AIO

LCDSEG

Table 13-12. Port D Pins Alternate Functions (SEG refers to 100-pin/64-pin pinout)

Port Pin

Alternate Function

PD7

SEG (LCD front plane 19/15)

PD6

SEG (LCD front plane 20/16)

PD5

SEG (LCD front plane 21/17)

PD4

SEG (LCD front plane 22/18)

PD3

SEG (LCD front plane 23/19)

PD2

SEG (LCD front plane 24/20)

PD1

INT0/SEG (External Interrupt0 Input or LCD front plane 25/21)

PD0

ICP1/SEG (Timer/Counter1 Input Capture pin or LCD front plane 26/22)

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