Rainbow Electronics ATtiny861_V - Manual (Page 65)

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