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ATTINY814-SSF

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Microchip Tech Microcontrollers (MCU/MPU/SOC), SOIC-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ATTINY814-SSF

Microchip Tech · Microcontrollers (MCU/MPU/SOC) · SOIC-14

ATTINY814-SSF from Microchip Tech, in a SOIC-14. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VDD power_in Power supply pin for the device, placed on the VDD power domain.
2 PA4 bidirectional General-purpose I/O pin PA4 on the VDD domain, also ADC0 input AIN4, PTC X0/Y0, USART0 XDIR (alternate position), SPI0 SS, TCA0 WO4 and WOA, and CCL LUT0-OUT.
3 PA5 bidirectional General-purpose I/O pin PA5 on the VDD domain, also ADC0 input AIN5, PTC X1/Y1, DAC0 OUT, TCA0 WO5 and WO, and TCB1 WOB.
4 PA6 bidirectional General-purpose I/O pin PA6 on the VDD domain, also ADC0 input AIN6, PTC X2/Y2, AC0 negative input AINN0, and DAC0 OUT (PA6 is the DAC0 output pin).
5 PA7 bidirectional General-purpose I/O pin PA7 on the VDD domain, also ADC0 input AIN7, PTC X3/Y3, AC0 positive input AINP0, and CCL LUT1-OUT.
6 PB3 bidirectional General-purpose I/O pin PB3, also the TOSC1 crystal oscillator input, USART0 RxD (alternate position) and TCA0 WO0 (alternate position).
7 PB2 bidirectional General-purpose I/O pin PB2, also the TOSC2 crystal oscillator output, EVSYS EVOUT1, USART0 TxD and TCA0 WO2.
8 PB1 bidirectional General-purpose I/O pin PB1, also ADC0 input AIN10, PTC X4/Y4, USART0 XCK, TWI0 SDA and TCA0 WO1.
9 PB0 bidirectional General-purpose I/O pin PB0, also ADC0 input AIN11, PTC X5/Y5, USART0 XDIR, TWI0 SCL and TCA0 WO0.
10 PA0 (RESET/UPDI) bidirectional Pin PA0 is the RESET or single-pin UPDI programming/debug interface, selected by the RSTPINCFG fuse; it can also serve as ADC0 input AIN0 and CCL LUT0-IN0 when used as GPIO.
11 PA1 bidirectional General-purpose I/O pin PA1, also ADC0 input AIN1, USART0 TxD (alternate position), SPI0 MOSI, TWI0 SDA (alternate position) and CCL LUT0-IN1.
12 PA2 bidirectional General-purpose I/O pin PA2, also EVSYS EVOUT0, ADC0 input AIN2, USART0 RxD (alternate position), SPI0 MISO, TWI0 SCL (alternate position) and CCL LUT0-IN2.
13 PA3 (EXTCLK) bidirectional General-purpose I/O pin PA3, also the external clock input EXTCLK, ADC0 input AIN3, USART0 XCK (alternate position), SPI0 SCK and TCA0 WO3.
14 GND power_in Ground reference pin for the device.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOIC-14
Category Embedded Processors & Controllers
Pins 14

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply voltage VDD 2.7 5.5 V 560
Operating temperature range -40 125 °C 560
Max. CPU speed 16 MHz 560

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin including indium tin oxide (ITO) sensor grids. The PTC requires one pin per X-line and one pin per Y-line. In the Self Capacitance mode, the PTC requires only one pin (Y-line) for each touch sensor. 461

CAD (KiCad official)

  • Symbol: ATTINY814-SSF
  • Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
  • 3D model: SOIC-14 (KiCad packages3D, STEP)
  • 3D model files: attiny814-ssf-etched.step / attiny814-ssf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); attiny814-ssf.step / attiny814-ssf.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (596 pp, sha256 c2392fe1c4c9666a, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF