ATTINY414-SSNR from Microchip, in a SOIC-14. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	VDD	power_in	Input supply voltage (1.8V - 5.5V). Powers the digital core and GPIO VDD domain.
2	PA4	bidirectional	General-purpose I/O port A bit 4. Muxed functions: ADC0 AIN4, PTC X0/Y0, USART0 XDIR, SPI0 SS, TCA0 WO4, TCD0 WOA, CCL LUT0-OUT. External interrupt capable.
3	PA5	bidirectional	General-purpose I/O port A bit 5. Muxed functions: ADC0 AIN5, PTC X1/Y1, AC0 OUT, TCA0 WO5, TCB0 WO, TCD0 WOB. External interrupt capable with full asynchronous detection (Px5 not applicable - see note; PA5 muxes only listed peripherals).
4	PA6	bidirectional	General-purpose I/O port A bit 6. Muxed functions: ADC0 AIN6, PTC X2/Y2, AC0 AINN0, DAC OUT. Full asynchronous external interrupt capability (Px2/Px6 rule).
5	PA7	bidirectional	General-purpose I/O port A bit 7. Muxed functions: ADC0 AIN7, PTC X3/Y3, AC0 AINP0, CCL LUT1-OUT.
6	PB3/TOSC1	bidirectional	General-purpose I/O port B bit 3, alternate TOSC1 for 32.768kHz crystal oscillator input. Muxed functions: USART0 RxD (alt), TCA0 WO0 (alt).
7	PB2/TOSC2	bidirectional	General-purpose I/O port B bit 2, alternate TOSC2 for 32.768kHz crystal oscillator output, EVOUT1 event system output. Muxed functions: USART0 TxD, TCA0 WO2. Full asynchronous external interrupt capability (Px2/Px6 rule).
8	PB1	bidirectional	General-purpose I/O port B bit 1. Muxed functions: ADC0 AIN10, PTC X4/Y4, USART0 XCK, TWI0 SDA, TCA0 WO1.
9	PB0	bidirectional	General-purpose I/O port B bit 0. Muxed functions: ADC0 AIN11, PTC X5/Y5, USART0 XDIR, TWI0 SCL, TCA0 WO0.
10	PA0/RESET/UPDI	bidirectional	General-purpose I/O port A bit 0. Alternate functions: RESET (active-low external reset) and UPDI (Unified Program and Debug Interface). Muxed: ADC0 AIN0, CCL LUT0-IN0.
11	PA1	bidirectional	General-purpose I/O port A bit 1. Muxed functions: BREAK (debug), ADC0 AIN1, USART0 TXD (alt), SPI0 MOSI, TWI0 SDA (alt), CCL LUT0-IN1.
12	PA2	bidirectional	General-purpose I/O port A bit 2. Muxed functions: EVOUT0 (event system output), ADC0 AIN2, USART0 RXD (alt), SPI0 MISO, TWI0 SCL (alt), CCL LUT0-IN2. Full asynchronous external interrupt capability (Px2/Px6 rule).
13	PA3/EXTCLK	bidirectional	General-purpose I/O port A bit 3, alternate external clock input (EXTCLK) for the main clock. Muxed functions: ADC0 AIN3, USART0 XCK (alt), SPI0 SCK, TCA0 WO3.
14	GND	power_in	Ground reference (0V) for the device.

Key specifications

Parameter	Value
Manufacturer	Microchip
Package	SOIC-14
Category	MCU
Pins	14

Ordering variants

Same part, different packaging or reel option.

ATTINY414-SSNR
ATTINY414-SSNRSSFR

CAD (KiCad official)

Symbol: ATTINY414-SSNR
Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
3D model: SOIC-14 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Microchip datasheet (497 pp, sha256 0aeff7148ba82403, retrieved 2026-08-17, tier: manufacturer)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF