ATMEGA8L ATMEL [ATMEL Corporation], ATMEGA8L Datasheet - Page 63

• Manufacturer Part Number: ATMEGA8L
• Description: 8-bit AVR with 8K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

Register Description for I/O Ports
The Port B Data Register –
PORTB
The Port B Data Direction
Register – DDRB
The Port B Input Pins Address
– PINB
The Port C Data Register –
PORTC
The Port C Data Direction
Register – DDRC
The Port C Input Pins Address
– PINC
The Port D Data Register –
PORTD
The Port D Data Direction
Register – DDRD
The Port D Input Pins Address
– PIND
2486M–AVR–12/03
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
PORTB7
PORTD7
PINB7
PIND7
DDB7
DDD7
R/W
R/W
R/W
R/W
N/A
N/A
R
R
R
R
R
7
0
7
0
7
7
–
0
7
–
0
7
–
0
7
0
7
0
7
PORTB6
PORTC6
PORTD6
PINB6
PINC6
PIND6
DDB6
DDC6
DDD6
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
N/A
R
R
R
6
0
6
0
6
6
0
6
0
6
6
0
6
0
6
PORTB5
PORTC5
PORTD5
PINB5
PINC5
PIND5
DDB5
DDC5
DDD5
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
N/A
R
R
R
5
0
5
0
5
5
0
5
0
5
5
0
5
0
5
PORTB4
PORTC4
PORTD4
PINB4
PINC4
PIND4
DDB4
DDC4
DDD4
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
N/A
R
R
R
4
0
4
0
4
4
0
4
0
4
4
0
4
0
4
PORTB3
PORTC3
PORTD3
PINB3
PINC3
PIND3
DDB3
DDC3
DDD3
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
N/A
R
R
R
3
0
3
0
3
3
0
3
0
3
3
0
3
0
3
PORTB2
PORTC2
PORTD2
PINB2
PINC2
PIND2
DDB2
DDC2
DDD2
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
N/A
R
R
R
2
0
2
0
2
2
0
2
0
2
2
0
2
0
2
PORTB1
PORTC1
PORTD1
PINB1
PINC1
PIND1
ATmega8(L)
DDB1
DDC1
DDD1
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
N/A
R
R
R
1
0
1
0
1
1
0
1
0
1
1
0
1
0
1
PORTB0
PORTC0
PORTD0
PINB0
PINC0
PIND0
DDB0
DDC0
DDD0
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
N/A
R
R
R
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
PORTB
PORTC
PORTD
DDRB
DDRC
DDRD
PINB
PINC
PIND
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