ATtiny87-15MZ datasheet(76/282 Pages) ATMEL

76 / 282 page

7728D–AVR–07/09

ATtiny87/ATtiny167

9.3.3

Alternate Functions of Port A

The Port A pins with alternate functions are shown in Table 9-3.

Table 9-3.

Port A Pins Alternate Functions

Port Pin

Alternate Function

PA7

PCINT7 (Pin Change Interrupt 7)

ADC7 (ADC Input Channel 7)

AIN1 (Analog Comparator Positive Input)

XREF (Internal Voltage Reference Output)

AREF (External Voltage Reference Input)

PA6

PCINT6 (Pin Change Interrupt 6)

ADC6 (ADC Input Channel 6)

AIN0 (Analog Comparator Negative Input)

SS (SPI Slave Select Input)

PA5

PCINT5 (Pin Change Interrupt 5)

ADC5 (ADC Input Channel 5)

T1 (Timer/Counter1 Clock Input)

USCK (Three-wire Mode USI Alternate Clock Input)

SCL (Two-wire Mode USI Alternate Clock Input)

SCK (SPI Master Clock)

PA4

PCINT4 (Pin Change Interrupt 4)

ADC4 (ADC Input Channel 4)

ICP1 (Timer/Counter1 Input Capture Trigger)

DI (Three-wire Mode USI Alternate Data Input)

SDA (Two-wire Mode USI Alternate Data Input / Output)

MOSI (SPI Master Output / Slave Input)

PA3

PCINT3 (Pin Change Interrupt 3)

ADC3 (ADC Input Channel 3)

ISRC (Current Source Pin)

INT1 (External Interrupt1 Input)

PA2

PCINT2 (Pin Change Interrupt 2)

ADC2 (ADC Input Channel 2)

OC0A (Output Compare and PWM Output A for Timer/Counter0)

DO (Three-wire Mode USI Alternate Data Output)

MISO (SPI Master Input / Slave Output)

PA1

PCINT1 (Pin Change Interrupt 1)

ADC1 (ADC Input Channel 1)

TXD (UART Transmit Pin)

TXLIN (LIN Transmit Pin)

PA0

PCINT0 (Pin Change Interrupt 0)

ADC0 (ADC Input Channel 0)

RXD (UART Receive Pin)

RXLIN (LIN Receive Pin)

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