ATMEGA2560V-8CU datasheet(8/37 Pages) ATMEL

Part #	ATMEGA2560V-8CU

Description	8-bit Microcontroller with 64K/128K/256K Bytes In-System Programmable Flash

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Manufacturer	ATMEL [ATMEL Corporation]

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8

2549LS–AVR–08/07

ATmega640/1280/1281/2560/2561

resistors are activated. The Port C pins are tri-stated when a reset condition becomes active,

even if the clock is not running.

Port C also serves the functions of special features of the ATmega640/1280/1281/2560/2561 as

listed on page 82.

2.3.6

Port D (PD7..PD0)

Port D is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The

Port D output buffers have symmetrical drive characteristics with both high sink and source

capability. As inputs, Port D pins that are externally pulled low will source current if the pull-up

resistors are activated. The Port D pins are tri-stated when a reset condition becomes active,

even if the clock is not running.

Po rt

D

al so

ser v e s

t h e

f u nct i o n s

o f

va ri ou s

sp eci a l

f e at u r e s

of

t h e

ATmega640/1280/1281/2560/2561 as listed on page 83.

2.3.7

Port E (PE7..PE0)

Port E is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The

Port E output buffers have symmetrical drive characteristics with both high sink and source

capability. As inputs, Port E pins that are externally pulled low will source current if the pull-up

resistors are activated. The Port E pins are tri-stated when a reset condition becomes active,

even if the clock is not running.

Por t

E

also

se rve s

the

fun c tion s

of

va riou s

sp ecial

fe atu r e s

of

th e

ATmega640/1280/1281/2560/2561 as listed on page 86.

2.3.8

Port F (PF7..PF0)

Port F serves as analog inputs to the A/D Converter.

Port F also serves as an 8-bit bi-directional I/O port, if the A/D Converter is not used. Port pins

can provide internal pull-up resistors (selected for each bit). The Port F output buffers have sym-

metrical drive characteristics with both high sink and source capability. As inputs, Port F pins

that are externally pulled low will source current if the pull-up resistors are activated. The Port F

pins are tri-stated when a reset condition becomes active, even if the clock is not running. If the

JTAG interface is enabled, the pull-up resistors on pins PF7(TDI), PF5(TMS), and PF4(TCK) will

be activated even if a reset occurs.

Port F also serves the functions of the JTAG interface.

2.3.9

Port G (PG5..PG0)

Port G is a 6-bit I/O port with internal pull-up resistors (selected for each bit). The Port G output

buffers have symmetrical drive characteristics with both high sink and source capability. As

inputs, Port G pins that are externally pulled low will source current if the pull-up resistors are

activated. The Port G pins are tri-stated when a reset condition becomes active, even if the clock

is not running.

Por t

G

also

ser v es

the

fun c tion s

o f

various

special

f e atures

of

the

ATmega640/1280/1281/2560/2561 as listed on page 90.

2.3.10

Port H (PH7..PH0)

Port H is a 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The

Port H output buffers have symmetrical drive characteristics with both high sink and source

capability. As inputs, Port H pins that are externally pulled low will source current if the pull-up

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ATMEGA2560V-8CU Datasheet(PDF) 8 Page - ATMEL Corporation

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