ATMEGA169 ATMEL [ATMEL Corporation], ATMEGA169 Datasheet - Page 76

• Manufacturer Part Number: ATMEGA169
• Description: 8-bit Microcontroller with 16K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

Register Description for
I/O-Ports
Port A Data Register – PORTA
Port A Data Direction Register
– DDRA
Port A Input Pins Address –
PINA
Port B Data Register – PORTB
Port B Data Direction Register
– DDRB
Port B Input Pins Address –
PINB
Port C Data Register – PORTC
Port C Data Direction Register
– DDRC
76
ATmega169/V
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
PORTA7
PORTB7
PORTC7
PINA7
PINB7
DDA7
DDB7
DDC7
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
7
0
7
0
7
7
0
7
0
7
7
0
7
0
PORTB6
PORTC6
PORTA6
PINA6
PINB6
DDB6
DDC6
DDA6
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
6
0
6
0
6
6
0
6
0
6
6
0
6
0
PORTB5
PORTC5
PORTA5
PINA5
PINB5
DDA5
DDB5
DDC5
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
5
0
5
0
5
5
0
5
0
5
5
0
5
0
PORTA4
PORTB4
PORTC4
PINA4
PINB4
DDA4
DDB4
DDC4
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
4
0
4
0
4
4
0
4
0
4
4
0
4
0
PORTA3
PORTB3
PORTC3
PINA3
PINB3
DDB3
DDC3
DDA3
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
3
0
3
0
3
3
0
3
0
3
3
0
3
0
PORTB2
PORTC2
PORTA2
PINA2
PINB2
DDA2
DDB2
DDC2
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
2
0
2
0
2
2
0
2
0
2
2
0
2
0
PORTA1
PORTB1
PORTC1
PINA1
PINB1
DDA1
DDB1
DDC1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
1
0
1
0
1
1
0
1
0
1
1
0
1
0
PORTA0
PORTB0
PORTC0
PINA0
PINB0
DDA0
DDB0
DDC0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
2514P–AVR–07/06
0
0
0
0
0
0
0
0
0
0
0
0
0
0
PORTA
PORTB
PORTC
DDRA
DDRB
DDRC
PINA
PINB