attiny261a-xu ATMEL Corporation, attiny261a-xu Datasheet - Page 68

• Manufacturer Part Number: attiny261a-xu
• Description: 8-bit Avr Microcontroller With 2/4/8k Bytes In-system Programmable Flash
• Manufacturer: ATMEL Corporation

10.3.4
10.3.5
10.3.6
10.3.7
68
ATtiny261A/461A/861A
PINA – Port A Input Pins Address
PORTB – Port B Data Register
DDRB – Port B Data Direction Register
PINB – Port B Input Pins Address
Bit
0x19 (0x39)
Read/Write
Initial Value
Bit
0x18 (0x38)
Read/Write
Initial Value
Bit
0x17 (0x37)
Read/Write
Initial Value
Bit
0x16 (0x36)
Read/Write
Initial Value
R/W
R/W
R/W
R/W
7
PINA7
N/A
7
PORTB7
0
7
DDB7
0
7
PINB7
N/A
6
PINA6
R/W
N/A
6
PORTB6
R/W
0
6
DDB6
R/W
0
6
PINB6
R/W
N/A
5
PINA5
R/W
N/A
5
PORTB5
R/W
0
5
DDB5
R/W
0
5
PINB5
R/W
N/A
4
PORTB4
R/W
0
4
DDB4
R/W
0
4
PINA4
R/W
N/A
4
PINB4
R/W
N/A
3
PINA3
R/W
N/A
3
PORTB3
R/W
0
3
DDB3
R/W
0
3
PINB3
R/W
N/A
2
PORTB2
R/W
0
2
DDB2
R/W
0
2
PINA2
R/W
N/A
2
PINB2
R/W
N/A
1
PORTB1
R/W
0
1
DDB1
R/W
0
1
PINA1
R/W
N/A
1
PINB1
R/W
N/A
0
PORTB0
0
0
DDB0
0
0
R/W
N/A
R/W
R/W
0
R/W
N/A
PINA0
PINB0
8197B–AVR–01/10
PORTB
DDRB
PINA
PINB