ATmega16(L)
• OC1A – Port D, Bit 5
OC1A, Output Compare Match A output: The PD5 pin can serve as an external output for the
Timer/Counter1 Output Compare A. The pin has to be configured as an output (DDD5 set (one))
to serve this function. The OC1A pin is also the output pin for the PWM mode timer function.
• OC1B – Port D, Bit 4
OC1B, Output Compare Match B output: The PD4 pin can serve as an external output for the
Timer/Counter1 Output Compare B. The pin has to be configured as an output (DDD4 set (one))
to serve 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.
• INT0 – Port D, Bit 2
INT0, External Interrupt Source 0: The PD2 pin can serve as an external interrupt 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, the pull-up can still be controlled by the PORTD0 bit.
and
relate the alternate functions of Port D to the overriding signals shown in
Table 32.
Overriding Signals for Alternate Functions PD7..PD4
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
PD7/OC2
0
0
0
0
OC2 ENABLE
OC2
0
0
–
–
PD6/ICP1
0
0
0
0
0
0
0
0
ICP1 INPUT
–
PD5/OC1A
0
0
0
0
OC1A ENABLE
OC1A
0
0
–
–
PD4/OC1B
0
0
0
0
OC1B ENABLE
OC1B
0
0
–
–
64
2466S–AVR–05/09
ATMEL [ ATMEL CORPORATION ]
