Datasheet

ATtiny828 [DATASHEET]

8371A–AVR–08/12

Table 21. Alternative Functions of Port A

Note: 1. Configure port pin as input with the internal pull-up switched off to avoid the digital port function from inter-

fering with the function of the analog comparator.

Table 22, below, summarises the override signals used by the alternative functions of the port. For an illustration on how

signals are used, see Figure 25 on page 64.

Pin Function Description of Alternative Function

PA0

PCINT0 Pin change interrupt source

ADC0 Input channel for analog to digital converter (ADC)

PA1

PCINT1 Pin change interrupt source

ADC1 Input channel for analog to digital converter (ADC)

AIN0 Positive input of analog comparator

(1)

PA2

PCINT2 Pin change interrupt source

ADC2 Input channel for analog to digital converter (ADC)

AIN1 Negative input channel of analog comparator

(1)

PA3

PCINT3 Pin change interrupt source

ADC3 Input channel for analog to digital converter (ADC)

PA4

PCINT4 Pin change interrupt source

ADC4 Input channel for analog to digital converter (ADC)

PA5

PCINT5 Pin change interrupt source

ADC5 Input channel for analog to digital converter (ADC)

PA6

PCINT6 Pin change interrupt source

ADC6 Input channel for analog to digital converter (ADC)

PA7

PCINT7 Pin change interrupt source

ADC7 Input channel for analog to digital converter (ADC)