ATtiny212/214/412/414 Automotive

5.1 Multiplexed Signals

Table 5-1. PORT Function Multiplexing, 14 Pins
SOIC 14-Pin	Pin Name ^(1,2)	Other/Special	ADC0	AC0	DAC0	USART0	SPI0	TWI0	TCA0	TCB0	TCD0	CCL
10	PA0	RESET/ UPDI	AIN0									LUT0-IN0
11	PA1		AIN1			TxD⁽³⁾	MOSI	SDA⁽³⁾				LUT0-IN1
12	PA2	EVOUT0	AIN2			RxD⁽³⁾	MISO	SCL⁽³⁾				LUT0-IN2
13	PA3	EXTCLK	AIN3			XCK⁽³⁾	SCK		WO3
14	GND
1	V_DD
2	PA4		AIN4			XDIR⁽³⁾	SS		WO4		WOA	LUT0-OUT
3	PA5		AIN5	OUT					WO5	WO	WOB
4	PA6		AIN6	AINN0	OUT		MOSI⁽³⁾
5	PA7		AIN7	AINP0			MISO⁽³⁾					LUT1-OUT
6	PB3	TOSC1				RxD			WO0⁽³⁾
7	PB2	TOSC2, EVOUT1				TxD			WO2
8	PB1		AIN10			XCK		SDA	WO1
9	PB0		AIN11			XDIR		SCL	WO0

Note:

Pin names are of type Pxn, with x being the PORT instance (A, B) and n the pin number. The notation for signals is PORTx_PINn. All pins can be used as event input.
All pins can be used for external interrupt, where pins Px2 and Px6 of each port have full asynchronous detection.
Alternate pin positions. For selecting the alternate positions, refer to section 16 PORTMUX - Port Multiplexer.

Table 5-2. PORT Function Multiplexing, Eight Pins
SOIC 8-Pin	Pin Name ^(1,2)	Other/Special	ADC0	AC0	DAC0	USART0	SPI0	TWI0	TCA0	TCB0	TCD0	CCL
6	PA0	RESET/UPDI	AIN0			XDIR	SS					LUT0-IN0
4	PA1		AIN1			TxD⁽³⁾	MOSI	SDA	WO1			LUT0-IN1
5	PA2	EVOUT0	AIN2			RxD⁽³⁾	MISO	SCL	WO2			LUT0-IN2
7	PA3	EXTCLK	AIN3	OUT		XCK	SCK		WO0/WO3
8	GND
1	VDD
2	PA6		AIN6	AINN0	OUT	TxD	MOSI⁽³⁾			WO0	WOA	LUT0-OUT
3	PA7		AIN7	AINP0		RxD	MISO⁽³⁾		WO0⁽³⁾		WOB	LUT1-OUT

Note:

Pin names are of type Pxn, with x being the PORT instance (A, B) and n the pin number. Notation for signals is PORTx_PINn. All pins can be used as event inputs.
All pins can be used for external interrupts, where pins Px2 and Px6 of each port have full asynchronous detection.
Alternate pin positions. For selecting the alternate positions, refer to section 16 PORTMUX - Port Multiplexer.

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