ATMEGA32 View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'ATMEGA32' PDF : 346 Pages View PDF
Table 33. Overriding Signals for Alternate Functions in PD3..PD0
Signal Name PD3/INT1
PD2/INT0
PD1/TXD
PUOE
0
0
TXEN
PUOV
0
0
0
DDOE
0
0
TXEN
DDOV
0
0
1
PVOE
0
0
TXEN
PVOV
0
0
TXD
DIEOE
INT1 ENABLE
INT0 ENABLE
0
DIEOV
1
1
0
DI
INT1 INPUT
INT0 INPUT
–
AIO
–
–
–
PD0/RXD
RXEN
PORTD0 • PUD
RXEN
0
0
0
0
0
RXD
–
Register Description for
I/O Ports
Port A Data Register – PORTA
Bit
Read/Write
Initial Value
7
PORTA7
R/W
0
6
PORTA6
R/W
0
5
PORTA5
R/W
0
4
PORTA4
R/W
0
3
PORTA3
R/W
0
2
PORTA2
R/W
0
1
PORTA1
R/W
0
0
PORTA0
R/W
0
PORTA
Port A Data Direction Register
– DDRA
Bit
Read/Write
Initial Value
7
DDA7
R/W
0
6
DDA6
R/W
0
5
DDA5
R/W
0
4
DDA4
R/W
0
3
DDA3
R/W
0
2
DDA2
R/W
0
1
DDA1
R/W
0
0
DDA0
R/W
0
DDRA
Port A Input Pins Address –
PINA
Bit
Read/Write
Initial Value
7
PINA7
R
N/A
6
PINA6
R
N/A
5
PINA5
R
N/A
4
PINA4
R
N/A
3
PINA3
R
N/A
2
PINA2
R
N/A
1
PINA1
R
N/A
0
PINA0
R
N/A
PINA
Port B Data Register – PORTB
Bit
Read/Write
Initial Value
7
PORTB7
R/W
0
6
PORTB6
R/W
0
5
PORTB5
R/W
0
4
PORTB4
R/W
0
3
PORTB3
R/W
0
2
PORTB2
R/W
0
1
PORTB1
R/W
0
0
PORTB0
R/W
0
PORTB
Port B Data Direction Register
– DDRB
Bit
Read/Write
Initial Value
7
DDB7
R/W
0
6
DDB6
R/W
0
5
DDB5
R/W
0
4
DDB4
R/W
0
3
DDB3
R/W
0
2
DDB2
R/W
0
1
DDB1
R/W
0
0
DDB0
R/W
0
DDRB
64 ATmega32(L)
2503J–AVR–10/06
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