Table 29 and Table 30 relate the alternate functions of Port D to the overriding signals
shown in Figure 25 on page 54.
Table 29. Overriding Signals for Alternate Functions PD7..PD4
Signal Name
PUOE
PUO
PD7/AIN1
PD6/AIN0
PD5/T1
PD4/XCK/T0
0
0
0
0
0
0
0
0
OOE
0
0
0
0
OO
0
0
0
0
PVOE
PVO
0
0
0
UMSEL
0
0
0
XCK OUTPUT
DIEOE
DIEO
DI
0
0
0
0
0
0
0
0
–
–
T1 INPUT
–
XCK INPUT / T0 INPUT
–
AIO
AIN1 INPUT
AIN0 INPUT
Table 30. Overriding Signals for Alternate Functions in PD3..PD0
Signal Name
PUOE
PUO
PD3/INT1
PD2/INT0
PD1/TXD
PD0/RXD
0
0
TXEN
RXEN
0
0
0
PORTD0 • PUD
OOE
0
0
TXEN
RXEN
OO
0
0
1
0
PVOE
PVO
0
0
TXEN
0
0
0
TXD
0
DIEOE
DIEO
DI
INT1 ENABLE
INT0 ENABLE
0
0
–
–
0
1
1
0
INT1 INPUT
–
INT0 INPUT
–
RXD
–
AIO
62
ATmega8(L)
2486M–AVR–12/03
ATMEL [ ATMEL ]
