Atmel ATmega328P Xplained Mini MEGA328P-XMINI MEGA328P-XMINI Data Sheet
Product codes
MEGA328P-XMINI
91
ATmega48A/PA/88A/PA/168A/PA/328/P [DATASHEET]
Atmel-8271H-AVR- ATmega-Datasheet_08/2014
• RXD/PCINT16 – 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.
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.
PCINT16: Pin Change Interrupt source 16. The PD0 pin can serve as an external interrupt source.
and
relate the alternate functions of Port D to the overriding signals shown in
.
Table 14-10.
Overriding Signals for Alternate Functions PD7...PD4
Signal
Name
Name
PD7/AIN1
/PCINT23
/PCINT23
PD6/AIN0/
OC0A/PCINT22
OC0A/PCINT22
PD5/T1/OC0B/
PCINT21
PCINT21
PD4/XCK/
T0/PCINT20
T0/PCINT20
PUOE
0
0
0
0
PUO
0
0
0
0
DDOE
0
0
0
0
DDOV
0
0
0
0
PVOE
0
OC0A ENABLE
OC0B ENABLE
UMSEL
PVOV
0
OC0A
OC0B
XCK OUTPUT
DIEOE
PCINT23 • PCIE2
PCINT22 • PCIE2
PCINT21 • PCIE2
PCINT20 • PCIE2
DIEOV
1
1
1
1
DI
PCINT23 INPUT
PCINT22 INPUT
PCINT21 INPUT
T1 INPUT
T1 INPUT
PCINT20 INPUT
XCK INPUT
T0 INPUT
XCK INPUT
T0 INPUT
AIO
AIN1 INPUT
AIN0 INPUT
–
–
Table 14-11.
Overriding Signals for Alternate Functions in PD3...PD0
Signal
Name
Name
PD3/OC2B/INT1/
PCINT19
PCINT19
PD2/INT0/
PCINT18
PCINT18
PD1/TXD/
PCINT17
PCINT17
PD0/RXD/
PCINT16
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
PCINT19 • PCIE2
INT0 ENABLE +
PCINT18 • PCIE1
PCINT18 • PCIE1
PCINT17 • PCIE2
PCINT16 • PCIE2
DIEOV
1
1
1
1
DI
PCINT19 INPUT
INT1 INPUT
INT1 INPUT
PCINT18 INPUT
INT0 INPUT
INT0 INPUT
PCINT17 INPUT
PCINT16 INPUT
RXD
RXD
AIO
–
–
–
–