Datasheet ATtiny214, ATtiny414, ATtiny814 Summary (Microchip) - 10

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ATtiny214/414/814 5. I/O Multiplexing and Considerations 5.1 Multiplexed Signals Table 5-1. PORT Function Multiplexing Pin Name (1,2) Other/Special ADC0 PTC(3) AC0 DAC0 USART0 SPI0 TWI0 TCA0 TCB0 TCD0 CCL SOIC 14-pin
10 PA0 AIN0 LUT0-IN0 RESET UPDI 11 PA1 BREAK AIN1 TXD MOSI SDA LUT0-IN1 12 PA2 EVOUT0 AIN2 RxD MISO SCL LUT0-IN2 13 PA3 EXTCLK AIN3 XCK SCK WO3 14 GND 1 VDD 2 PA4 AIN4 X0/Y0 XDIR SS WO4 WOA LUT0-OUT 3 PA5 AIN5 X1/Y1 OUT WO5 WO WOB 4 PA6 AIN6 X2/Y2 AINN0 OUT 5 PA7 AIN7 X3/Y3 AINP0 LUT1-OUT 6 PB3 RxD WO0 TOSC1 7 PB2 TOSC2, EVOUT1 TxD WO2 8 PB1 AIN10 X4/Y4 XCK SDA WO1 9 PB0 AIN11 X5/Y5 XDIR SCL WO0
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. 3. PTC is only available in devices with 8KB Flash (ATtiny814). Every PTC line can be configured as X-line or Y-line.
Tip: 
Signals on alternative pin locations are in typewriter font. © 2017 Microchip Technology Inc.
Datasheet Preliminary Summary
DS40001932A-page 10 Document Outline Introduction Features Table of Contents 1. tinyAVR® 1-Series Overview 1.1. Configuration Summary 1.1.1. Peripheral Summary 2. Ordering Information 2.1. ATtiny214 2.2. ATtiny414 2.3. ATtiny814 3. Block Diagram 4. Pinout 4.1. 14-pin SOIC 5. I/O Multiplexing and Considerations 5.1. Multiplexed Signals 6. Package Drawings 6.1. 14-pin SOIC150 7. Thermal Considerations 7.1. Thermal Resistance Data 7.2. Junction Temperature The Microchip Web Site Customer Change Notification Service Customer Support Microchip Devices Code Protection Feature Legal Notice Trademarks Quality Management System Certified by DNV Worldwide Sales and Service