Datasheet

149
ATmega323(L)
1457E11/01
ICP - Port D, Bit 6
ICP
Input Capture Pin: The PD6 pin can act as an input capture pin for
Timer/Counter1. The pin has to be configured as an input (DDD6 cleared(zero)) to serve
this function. See the timer description on how to enable this function.
OC1A - Port D, Bit 5
OC1A, Output compare matchA output: The PD5 pin can serve as an external output for
the Timer/Counter1 output compareA. The pin has to be configured as an output (DDD5
set (one)) to serve this function. See the timer description on how to enable this function.
The OC1A pin is also the output pin for the PWM mode timer function.
OC1B - Port D, Bit 4
OC1B, Output compare matchB output: The PD4 pin can serve as an external output for
the Timer/Counter1 output compareB. The pin has to be configured as an output (DDD4
set (one)) to serve this function. See the timer description on how to enable this function.
The OC1B pin is also the output pin for the PWM mode timer function.
INT1 - Port D, Bit 3
INT1, External Interrupt source 1: The PD3 pin can serve as an external interrupt source
to the MCU. See the interrupt description for further details, and how to enable the
source.
INT0 - Port D, Bit 2
INT0, External Interrupt source 0: The PD2 pin can serve as an external interrupt source
to the MCU. See the interrupt description for further details, and how to enable the
source.
TXD - Port D, Bit 1
TXD, Transmit Data (Data output pin for the USART). When the USART transmitter is
enabled, this pin is configured as an output regardless of the value of DDD1.
RXD - Port D, Bit 0
RXD, Receive Data (Data input pin for the USART). When the USART receiver is
enabled this pin is configured as an input regardless of the value of DDD0. When the
USART forces this pin to be an input, a logical one in PORTD0 will turn on the internal
pull-up.