ATmega328P datasheet(85/448 Pages) ATMEL

85 / 448 page

8161D–AVR–10/09

ATmega48PA/88PA/168PA/328P

13.3.2

Alternate Functions of Port C

The Port C pins with alternate functions are shown in Table 13-6.

Table 13-5.

Overriding Signals for Alternate Functions in PB3..PB0

Signal

Name

PB3/MOSI/

OC2/PCINT3

PB2/SS/

OC1B/PCINT2

PB1/OC1A/

PCINT1

PB0/ICP1/

PCINT0

PUOE

SPE • MSTR

PUOV

PORTB3 • PUD

PORTB2 • PUD

DDOE

SPE • MSTR

DDOV

PVOE

SPE • MSTR +

OC2A ENABLE

OC1B ENABLE

OC1A ENABLE

PVOV

SPI MSTR OUTPUT

+ OC2A

OC1B

OC1A

DIEOE

PCINT3 • PCIE0

PCINT2 • PCIE0

PCINT1 • PCIE0

PCINT0 • PCIE0

DIEOV

111

PCINT3 INPUT

SPI SLAVE INPUT

PCINT2 INPUT

SPI SS

PCINT1 INPUT

PCINT0 INPUT

ICP1 INPUT

AIO

–––

–

Table 13-6.

Port C Pins Alternate Functions

Port Pin

Alternate Function

PC6

RESET (Reset pin)

PCINT14 (Pin Change Interrupt 14)

PC5

ADC5 (ADC Input Channel 5)

SCL (2-wire Serial Bus Clock Line)

PCINT13 (Pin Change Interrupt 13)

PC4

ADC4 (ADC Input Channel 4)

SDA (2-wire Serial Bus Data Input/Output Line)

PCINT12 (Pin Change Interrupt 12)

PC3

ADC3 (ADC Input Channel 3)

PCINT11 (Pin Change Interrupt 11)

PC2

ADC2 (ADC Input Channel 2)

PCINT10 (Pin Change Interrupt 10)

PC1

ADC1 (ADC Input Channel 1)

PCINT9 (Pin Change Interrupt 9)

PC0

ADC0 (ADC Input Channel 0)

PCINT8 (Pin Change Interrupt 8)

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