Datasheet

71
ATmega48/88/168 Automotive [DATASHEET]
7530K–AVR–07/14
10.4 Register Description for I/O Ports
10.4.1 The Port B Data Register – PORTB
10.4.2 The Port B Data Direction Register – DDRB
10.4.3 The Port B Input Pins Address – PINB
10.4.4 The Port C Data Register – PORTC
Table 10-11. Overriding Signals for Alternate Functions in PD3..PD0
Signal Name PD3/OC2B/INT1/PCINT19 PD2/INT0/PCINT18 PD1/TXD/PCINT17 PD0/RXD/PCINT16
PUOE 0 0 TXEN RXEN
PUO 0 0 0 PORTD0 × PUD
DDOE 0 0 TXEN RXEN
DDOV 0 0 1 0
PVOE OC2B ENABLE 0 TXEN 0
PVOV OC2B 0 TXD 0
DIEOE
INT1 ENABLE + PCINT19 ×
PCIE2
INT0 ENABLE + PCINT18
× PCIE1
PCINT17 × PCIE2 PCINT16 × PCIE2
DIEOV 1 1 1 1
DI
PCINT19 INPUT
INT1 INPUT
PCINT18 INPUT
INT0 INPUT
PCINT17 INPUT
PCINT16 INPUT
RXD
AIO – – – –
Bit 76543210
PORTB7 PORTB6 PORTB5 PORTB4 PORTB3 PORTB2 PORTB1 PORTB0 PORTB
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value00000000
Bit 76543210
DDB7 DDB6 DDB5 DDB4 DDB3 DDB2 DDB1 DDB0 DDRB
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value00000000
Bit 76543210
PINB7 PINB6 PINB5 PINB4 PINB3 PINB2 PINB1 PINB0 PINB
Read/Write R RRRRRRR
Initial Value N/A N/A N/A N/A N/A N/A N/A N/A
Bit 76543210
– PORTC6PORTC5PORTC4PORTC3PORTC2PORTC1PORTC0 PORTC
Read/Write R R/W R/W R/W R/W R/W R/W R/W
Initial Value00000000