AT90PWM2 datasheet(73/365 Pages) ATMEL

73 / 365 page

AT90PWM2/3

4317B–AVR–02/05

Alternate Functions of Port C

The Port C pins with alternate functions are shown in Table 27.

The alternate pin configuration is as follows:

• D2A – Bit 7

D2A, Digital to Analog output

• ADC10/ACMP1 – Bit 6

ADC10, Analog to Digital Converter, input channel 10.

ACMP1, Analog Comparator 1 Positive Input. Configure the port pin as input with the

internal pull-up switched off to avoid the digital port function from interfering with the

function of the Analog Comparator.

• ADC9/AMP1+ – Bit 5

ADC9, Analog to Digital Converter, input channel 9.

AMP1+, Analog Differential Amplifier 1 Positive Input Channel.

• ADC8/AMP1- – Bit 4

ADC8, Analog to Digital Converter, input channel 8.

AMP1-, Analog Differential Amplifier 1 Negative Input Channel.

• T1/PSCOUT23 – Bit 3

T1, Timer/Counter1 counter source.

PSCOUT23: Output 3 of PSC 2.

• T0/PSCOUT22 – Bit 2

T0, Timer/Counter0 counter source.

PSCOUT22: Output 2 of PSC 2.

• PSCIN1/OC1B, Bit 1

PCSIN1, PSC 1 Digital Input.

Table 27. Port C Pins Alternate Functions

Port Pin

Alternate Function

PC7

D2A : DAC output

PC6

ADC10 (Analog Input Channel 10)

ACMP1 (Analog Comparator 1 Positive Input )

PC5

ADC9 (Analog Input Channel 9)

AMP1+ (Analog Differential Amplifier 1 Input Channel )

PC4

ADC8 (Analog Input Channel 8)

AMP1- (Analog Differential Amplifier 1 Input Channel )

PC3

T1 (Timer 1 clock input)

PSCOUT23 output

PC2

T0 (Timer 0 clock input)

PSCOUT22 output

PC1

PSCIN1 (PSC 1 Digital Input)

OC1B (Timer 1 Output Compare B)

PC0

PSCOUT10 output (see note 4)

INT3

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