ATmega640/1280/1281/2560/2561
Port D Data Register – PORTD
Bit
7
PORTD7
R/W
0
6
PORTD6
R/W
0
5
PORTD5
R/W
0
4
PORTD4
R/W
0
3
PORTD3
R/W
0
2
PORTD2
R/W
0
1
PORTD1
R/W
0
0
PORTD0
R/W
0
PORTD
DDRD
PIND
Read/Write
Initial Value
Port D Data Direction Register
– DDRD
Bit
7
DDD7
R/W
0
6
DDD6
R/W
0
5
DDD5
R/W
0
4
DDD4
R/W
0
3
DDD3
R/W
0
2
DDD2
R/W
0
1
DDD1
R/W
0
0
DDD0
R/W
0
Read/Write
Initial Value
Port D Input Pins Address –
PIND
Bit
7
6
5
4
3
2
1
0
PIND7
R/W
N/A
PIND6
R/W
N/A
PIND5
R/W
N/A
PIND4
R/W
N/A
PIND3
R/W
N/A
PIND2
R/W
N/A
PIND1
R/W
N/A
PIND0
R/W
N/A
Read/Write
Initial Value
Port E Data Register – PORTE
Bit
7
PORTE7
R/W
0
6
PORTE6
R/W
0
5
PORTE5
R/W
0
4
PORTE4
R/W
0
3
PORTE3
R/W
0
2
PORTE2
R/W
0
1
PORTE1
R/W
0
0
PORTE0
R/W
0
PORTE
DDRE
PINE
Read/Write
Initial Value
Port E Data Direction Register
– DDRE
Bit
7
DDE7
R/W
0
6
DDE6
R/W
0
5
DDE5
R/W
0
4
DDE4
R/W
0
3
DDE3
R/W
0
2
DDE2
R/W
0
1
DDE1
R/W
0
0
DDE0
R/W
0
Read/Write
Initial Value
Port E Input Pins Address –
PINE
Bit
7
6
5
4
3
2
1
0
PINE7
R/W
N/A
PINE6
R/W
N/A
PINE5
R/W
N/A
PINE4
R/W
N/A
PINE3
R/W
N/A
PINE2
R/W
N/A
PINE1
R/W
N/A
PINE0
R/W
N/A
Read/Write
Initial Value
Port F Data Register – PORTF
Bit
7
PORTF7
R/W
0
6
PORTF6
R/W
0
5
PORTF5
R/W
0
4
PORTF4
R/W
0
3
PORTF3
R/W
0
2
PORTF2
R/W
0
1
PORTF1
R/W
0
0
PORTF0
R/W
0
PORTF
DDRF
PINF
Read/Write
Initial Value
Port F Data Direction Register
– DDRF
Bit
7
DDF7
R/W
0
6
DDF6
R/W
0
5
DDF5
R/W
0
4
DDF4
R/W
0
3
DDF3
R/W
0
2
DDF2
R/W
0
1
DDF1
R/W
0
0
DDF0
R/W
0
Read/Write
Initial Value
Port F Input Pins Address –
PINF
Bit
7
6
5
4
3
2
1
0
PINF7
R/W
N/A
PINF6
R/W
N/A
PINF5
R/W
N/A
PINF4
R/W
N/A
PINF3
R/W
N/A
PINF2
R/W
N/A
PINF1
R/W
N/A
PINF0
R/W
N/A
Read/Write
Initial Value
113
2549A–AVR–03/05
ATMEL [ ATMEL ]
