# ATTINY1614-SSFR

**Microchip Tech** · ATMEL & AVR · SOIC-14

ATTINY1614-SSFR 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 | Positive supply input, operating range 1.8V to 5.5V (absolute maximum 6V). |
| 2 | PA4 | bidirectional | General purpose I/O PA4 with ADC input AIN4/AIN0, PTC X0/Y0, USART XDIR, SPI SS, TCA0 WO4, TCD0 WOA and LUT0-OUT alternate functions. |
| 3 | PA5 | bidirectional | General purpose I/O PA5 with VREFA external reference input, ADC inputs AIN5/AIN1, PTC X1/Y1, TCA0 WO5, TCB0 WO and TCD0 WOB alternate functions. |
| 4 | PA6 | bidirectional | General purpose I/O PA6 with ADC inputs AIN6/AIN2, PTC X2/Y2, DAC0 OUT and analog comparator inputs. |
| 5 | PA7 | bidirectional | General purpose I/O PA7 with ADC inputs AIN7/AIN3, PTC X3/Y3, analog comparator inputs and LUT1-OUT. |
| 6 | PB3 | bidirectional | General purpose I/O PB3 that also serves as 32.768kHz crystal oscillator pin TOSC1, with USART RxD, TCA0 WO0 and comparator OUT alternate functions. |
| 7 | PB2/TOSC2 | bidirectional | General purpose I/O PB2 that also serves as 32.768kHz crystal oscillator pin TOSC2, with EVOUT1, USART TxD, TCA0 WO2 and comparator OUT alternate functions. |
| 8 | PB1 | bidirectional | General purpose I/O PB1 with ADC input AIN10, PTC X4/Y4, USART XCK, TWI SDA, TCA0 WO1 and comparator input alternate functions. |
| 9 | PB0 | bidirectional | General purpose I/O PB0 with ADC input AIN11, PTC X5/Y5, USART XDIR, TWI SCL, TCA0 WO0 and comparator input alternate functions. |
| 10 | PA0/RESET/UPDI | bidirectional | General purpose I/O PA0 that is configured by the RSTPINCFG fuse as GPIO, RESET input or UPDI programming/debug pin (RESET pin tolerates up to 13V; 12V pulse enables UPDI), also ADC AIN0 and LUT0-IN0. |
| 11 | PA1 | bidirectional | General purpose I/O PA1 with ADC input AIN1, USART TXD, SPI MOSI, TWI SDA and LUT0-IN1 alternate functions. |
| 12 | PA2 | bidirectional | General purpose I/O PA2 with EVOUT0, ADC input AIN2, USART RxD, SPI MISO, TWI SCL and LUT0-IN2 alternate functions. |
| 13 | PA3/EXTCLK | bidirectional | General purpose I/O PA3 that also serves as external clock input EXTCLK, with ADC input AIN3, USART XCK, SPI SCK, TCA0 WO3 and TCB1 WO alternate functions. |
| 14 | GND | power_in | Ground reference 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 |
|---|---|---|---|---|---|---|---|
| Power supply voltage | VDD | 1.8 |  | 5.5 | V | Power Supply 1.8V - 5.5V | 12 |
| Operating temperature range |  | -40 |  | 125 | °C | Industrial (-40°C to +125°C) | 12 |
| Operating frequency |  | 0 |  | 5 | MHz | 1.8V - 5.5V | 2 |
| Operating frequency |  | 0 |  | 10 | MHz | 2.7V - 5.5V | 2 |
| Operating frequency |  | 0 |  | 20 | MHz | 4.5V - 5.5V | 2 |

## 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 | configurations, including indium tin oxide (ITO) sensor grids. The PTC requires one pin per X-line and one pin per Y-line. | 383 |

## CAD (KiCad official)

- Symbol: `ATTINY1614-SSFR`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `attiny1614-ssfr-etched.step` / `attiny1614-ssfr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `attiny1614-ssfr.step` / `attiny1614-ssfr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](docs/attiny1614-ssfr-datasheet.pdf) (493 pp, sha256 `06e23fa8222e1a74`, retrieved 2026-10-26, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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](docs/attiny1614-ssfr-datasheet.pdf)