Rainbow-electronics ATtiny861_V Manual de usuario descargar pdf (Pagina 65)

2588B–AVR–11/06

ATtiny261/461/861

12.3.2 Alternate Functions of Port A

The Port A pins with alternate function are shown in Table 12-6.

The alternate pin configuration is as follows:

• Port A, Bit 7- ADC6/AIN0/PCINT7

ADC6: Analog to Digital Converter, Channel 6

AIN0: Analog Comparator 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.

PCINT7: Pin Change Interrupt source 8.

• Port A, Bit 6 - ADC5/AIN1/PCINT6

ADC5: Analog to Digital Converter, Channel 5.

AIN1: Analog Comparator 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.

PCINT6: Pin Change Interrupt source 6.

• Port A, Bit 5 - ADC4/AIN2/PCINT5

ADC4: Analog to Digital Converter, Channel 4.

AIN2: Analog Comparator 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.

PCINT5: Pin Change Interrupt source 5.

• Port A, Bit 4 - ADC3/ICP0/PCINT4

ADC3: Analog to Digital Converter, Channel 3.

ICP0: Timer/Counter0 Input Capture Pin.

PCINT4: Pin Change Interrupt source 4.

• Port A, Bit 3 - AREF/PCINT3

AREF: External analog reference for ADC. Pullup and output driver are disabled on PA3 when

the pin is used as an external reference or internal voltage reference with external capacitor at

the AREF pin.

Table 12-6. Port B Pins Alternate Functions

Port Pin Alternate Function

PA7 ADC6 / AIN0 / PCINT7

PA6 ADC5 / AIN1 / PCINT6

PA5 ADC4 / AIN2 / PCINT5

PA4 ADC3 /ICP0/ PCINT4

PA3 AREF / PCINT3

PA2 ADC2 / INT1 / USCK / SCL / PCINT2

PA1 ADC1 / DO / PCINT1

PA0 ADC0 / DI / SDA / PCINT0

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 235 236

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Rainbow-electronics ATtiny861_V Manual de usuario Pagina 65