5. I/O Multiplexing and Considerations
5.1 Multiplexed Signals
Table 5-1. PORT Function Multiplexing
SOIC 8-pin
Pin Name
(1,2)
Other/
Special
ADC0 AC0 DAC0 USART0 SPI0 TWI0 TCA0 TCB0 TCD0 CCL
6 PA0
RESET
UPDI
AIN0 LUT0-IN0
4 PA1 BREAK AIN1
TXD
MOSI
SDA
LUT0-IN1
5 PA2 EVOUT0 AIN2
RxD
MISO
SCL
LUT0-IN2
7 PA3 EXTCLK AIN3
XCK
SCK WO3
8 GND
1 VDD
2 PA6 AIN6 AINN0 OUT
3 PA7 AIN7 AINP0 LUT1-OUT
Note:
1. Pins 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 input.
2. All pins can be used for external interrupt, where pins Px2 and Px6 of each port have full
asynchronous detection.
Tip: Signals on alternative pin locations are in typewriter font.
ATtiny212/412
© 2017 Microchip Technology Inc.
Datasheet Preliminary Summary
DS40001931A-page 9
