# ATTINY804-SSNR

**Microchip Tech** · Microcontroller Units (MCUs/MPUs/SOCs) · SOIC-14

ATTINY804-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 | Positive supply voltage, 1.8 V to 5.5 V operating range. |
| 2 | PA4 | bidirectional | General-purpose I/O PA4 with ADC input AIN4, USART XDIR (alternate), SPI SS (alternate), TCA0 WO4 and CCL LUT0-OUT. |
| 3 | PA5 | bidirectional | General-purpose I/O PA5 with ADC input AIN5, analog comparator output OUT, TCA0 WO5 and TCB0 WO. |
| 4 | PA6 | bidirectional | General-purpose I/O PA6 with ADC input AIN6 and analog comparator negative input AINN0. |
| 5 | PA7 | bidirectional | General-purpose I/O PA7 with ADC input AIN7, analog comparator positive input AINP0 and CCL LUT1-OUT. |
| 6 | PB3 | bidirectional | General-purpose I/O PB3 with USART RxD and TCA0 WO0 (alternate position). |
| 7 | PB2 | bidirectional | General-purpose I/O PB2 with event output EVOUT1, USART TxD and TCA0 WO2. |
| 8 | PB1 | bidirectional | General-purpose I/O PB1 with ADC input AIN10, USART XCK, TWI SDA and TCA0 WO1. |
| 9 | PB0 | bidirectional | General-purpose I/O PB0 with ADC input AIN11, USART XDIR, TWI SCL and TCA0 WO0. |
| 10 | PA0 (RESET/UPDI) | bidirectional | General-purpose I/O PA0, also the RESET/UPDI programming and debug pin (function set by RSTPINCFG fuse), with ADC input AIN0 and CCL LUT0-IN0. |
| 11 | PA1 | bidirectional | General-purpose I/O PA1 with ADC input AIN1, USART TxD (alternate), SPI MOSI and CCL LUT0-IN1. |
| 12 | PA2 | bidirectional | General-purpose I/O PA2 with event output EVOUT0, ADC input AIN2, USART RxD (alternate), SPI MISO and CCL LUT0-IN2. |
| 13 | PA3 (EXTCLK) | bidirectional | General-purpose I/O PA3 that also serves as external clock input EXTCLK, with ADC input AIN3, USART XCK (alternate), SPI SCK and TCA0 WO3. |
| 14 | GND | power_in | Ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-14 |
| Category | Single Chip Microcomputer/Microcontroller |
| 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 | 1.8 |  | 5.5 | V | Ordering table, ATtiny804-SSNR | 493 |
| Max. CPU Speed |  |  |  | 20 | MHz | Ordering table, ATtiny804-SSNR | 493 |
| Temperature Range |  | -40 |  | 105 | °C | Ordering table, ATtiny804-SSNR | 493 |

## CAD (KiCad official)

- Symbol: `ATTINY804-SSNR`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `attiny804-ssnr-etched.step` / `attiny804-ssnr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `attiny804-ssnr.step` / `attiny804-ssnr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](docs/attiny804-ssnr-datasheet.pdf) (522 pp, sha256 `f5c03e904027d54c`, retrieved 2026-10-23, 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/attiny804-ssnr-datasheet.pdf)