ATmega328P datasheet(87/448 Pages) ATMEL

87 / 448 page

8161D–AVR–10/09

ATmega48PA/88PA/168PA/328P

• ADC1/PCINT9 – Port C, Bit 1

PC1 can also be used as ADC input Channel 1. Note that ADC input channel 1 uses analog

power.

PCINT9: Pin Change Interrupt source 9. The PC1 pin can serve as an external interrupt source.

• ADC0/PCINT8 – Port C, Bit 0

PC0 can also be used as ADC input Channel 0. Note that ADC input channel 0 uses analog

power.

PCINT8: Pin Change Interrupt source 8. The PC0 pin can serve as an external interrupt source.

Table 13-7 and Table 13-8 relate the alternate functions of Port C to the overriding signals

shown in Figure 13-5 on page 80.

Note:

1. When enabled, the 2-wire Serial Interface enables slew-rate controls on the output pins PC4

and PC5. This is not shown in the figure. In addition, spike filters are connected between the

AIO outputs shown in the port figure and the digital logic of the TWI module.

Table 13-7.

Overriding Signals for Alternate Functions in PC6..PC4

(1)

Signal

Name

PC6/RESET/PCINT14

PC5/SCL/ADC5/PCINT13

PC4/SDA/ADC4/PCINT12

PUOE

RSTDISBL

TWEN

PUOV

PORTC5 • PUD

PORTC4 • PUD

DDOE

RSTDISBL

TWEN

DDOV

SCL_OUT

SDA_OUT

PVOE

TWEN

PVOV

DIEOE

RSTDISBL + PCINT14 •

PCIE1

PCINT13 • PCIE1 + ADC5D

PCINT12 • PCIE1 + ADC4D

DIEOV

RSTDISBL

PCINT13 • PCIE1

PCINT12 • PCIE1

PCINT14 INPUT

PCINT13 INPUT

PCINT12 INPUT

AIO

RESET INPUT

ADC5 INPUT / SCL INPUT

ADC4 INPUT / SDA INPUT

ATmega328P Datasheet(PDF) 87 Page - ATMEL Corporation

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