# ATTINY1614-SSNR

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

ATTINY1614-SSNR 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 | Supply voltage input; the operating supply voltage is specified as 1.8 V to 5.5 V. |
| 2 | PA4 | bidirectional | General-purpose bidirectional I/O pin PA4, also usable as ADC0 analog input AIN4, TCA0 waveform output WO4, or other alternate functions per the multiplexing table. |
| 3 | PA5 | bidirectional | General-purpose bidirectional I/O pin PA5, also usable as the VREFA external voltage reference input, ADC0 input AIN5, or TCA0 waveform output WO5. |
| 4 | PA6 | bidirectional | General-purpose bidirectional I/O pin PA6, also usable as ADC0 analog input AIN6 or the DAC0 analog output OUT. |
| 5 | PA7 | bidirectional | General-purpose bidirectional I/O pin PA7, also usable as ADC0 analog input AIN7 or the CCL LUT1-OUT output. |
| 6 | PB3 | passive | Port B pin PB3, shared with the TOSC1 32.768 kHz crystal oscillator connection and TCD0 output WO0 per the multiplexing table. |
| 7 | PB2 | passive | Port B pin PB2, shared with the TOSC2 32.768 kHz crystal oscillator connection and the EVOUT1 event output. |
| 8 | PB1 | bidirectional | General-purpose bidirectional I/O pin PB1, also usable as ADC0/PTC input AIN10, USART0 XCK, TWI0 SDA or TCA0 waveform output WO1. |
| 9 | PB0 | bidirectional | General-purpose bidirectional I/O pin PB0, also usable as ADC0/PTC input AIN11, USART0 XDIR, TWI0 SCL or TCA0 waveform output WO0. |
| 10 | PA0 | bidirectional | Pin PA0 is shared with RESET and UPDI; its function is selected by the RSTPINCFG fuse (GPIO, UPDI or RESET), and it also carries ADC0 input AIN0 and CCL LUT0-IN0. |
| 11 | PA1 | bidirectional | General-purpose bidirectional I/O pin PA1, also usable as ADC0 input AIN1, USART0 TxD, SPI0 MOSI, TWI0 SDA or CCL LUT0-IN1. |
| 12 | PA2 | bidirectional | General-purpose bidirectional I/O pin PA2, also usable as the EVOUT0 event output, ADC0 input AIN2, USART0 RxD, SPI0 MISO or TWI0 SCL. |
| 13 | PA3 | bidirectional | General-purpose bidirectional I/O pin PA3, also usable as the EXTCLK external clock input, ADC0 input AIN3, USART0 XCK, SPI0 SCK or TCA0 waveform output WO3. |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage (ATtiny1614-SSNR, 20 MHz variant) |  | 1.8 |  | 5.5 | V | Ordering information row for ATtiny1614-SSNR (20 MHz, -40°C to +105°C) | 566 |
| Maximum CPU speed (ATtiny1614-SSNR) |  |  |  | 20 | MHz | Ordering information row for ATtiny1614-SSNR, supply 1.8V to 5.5V | 566 |
| Operating temperature range (ATtiny1614-SSNR) |  | -40 |  | 105 | °C | Ordering information row for ATtiny1614-SSNR; N = -40°C to +105°C | 566 |

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

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588884917517733888) (598 pp, sha256 `382df42b05acd53e`, retrieved 2026-10-19, 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](docs/attiny1614-ssnr-datasheet.pdf)