ATmega48 datasheet(76/340 Pages) ATMEL

76 / 340 page

7530H–AVR–02/09

ATmega48/88/168 Automotive

Table 10-7 and Table 10-8 relate the alternate functions of Port C to the overriding signals

shown in Figure 10-5 on page 68.

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 10-7.

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

Table 10-8.

Overriding Signals for Alternate Functions in PC3..PC0

Signal

Name

PC3/ADC3/

PCINT11

PC2/ADC2/

PCINT10

PC1/ADC1/

PCINT9

PC0/ADC0/

PCINT8

PUOE

PUOV

DDOE

DDOV

PVOE

PVOV

DIEOE

PCINT11 • PCIE1 +

ADC3D

PCINT10 • PCIE1 +

ADC2D

PCINT9 • PCIE1 +

ADC1D

PCINT8 • PCIE1 +

ADC0D

DIEOV

PCINT11 • PCIE1

PCINT10 • PCIE1

PCINT9 • PCIE1

PCINT8 • PCIE1

PCINT11 INPUT

PCINT10 INPUT

PCINT9 INPUT

PCINT8 INPUT

AIO

ADC3 INPUT

ADC2 INPUT

ADC1 INPUT

ADC0 INPUT

ATmega48 Datasheet(PDF) 76 Page - ATMEL Corporation

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