The ATtiny416 Xplained Nano has a direct fan-out of the I/O pins of the device and all I/O's are accessible at the edge connectors.
| Edge Connector | ATtiny416 Pin | Functions | Shared Functionality |
|---|---|---|---|
| 1 | VCC | Power supply | |
| 2 | PA[0] | ADC0_0/UPDI/RESET | mEDBG UPDI |
| 3 | PA[1] | ADC0_1/MOSI0/TxD0/SDA0 | mEDBG CDC TX |
| 4 | PA[2] | ADC0_2/MISO0/EVOUT0/RxD0/SCL0 | mEDBG CDC RX |
| 5 | PA[3] | ADC0_3/SCK0/WO3/CLKIN/XCK0 | |
| 6 | PA[4] | ADC0_4/ADC1_0/XY0/SS0/WOA/XDIR | |
| 7 | PA[5] | ADC0_5/ADC1_1/XY1/ACOUT/WO4/WOB | |
| 8 | PA[6] | ADC0_6/ADC1_2/XY2/ACN0/DACOUT/WO5 | |
| 9 | PA[7] | ADC0_7/ADC1_3/XY3/ACP0/ | |
| 10 | PB[5] | ADC0_8/ACN1/CLKOUT/WO2 | User LED |
| 11 | PB[4] | ADC0_9/ACP1/WO1 | User button |
| 12 | PB[3] | TOSC1/EVOUT1/RxD0/WO0 | |
| 13 | PB[2] | TOSC2/TxD0/WO2 | |
| 14 | PB[1] | ADC0_10/XY4/XCK0/SDA0/WO1 | |
| 15 | PB[0] | ADC0_11/XY5/XDIR0/SCL0/WO0 | |
| 16 | PC[0] | ADC1_6/WOC/SCK0 | |
| 17 | PC[1] | ADC1_7/WOD/MISO0 | |
| 18 | PC[2] | ADC1_8/EVOUT2/MOSI0 | |
| 19 | PC[3] | ADC1_9/SS0/WO3 | |
| 20 | GND | Ground |