# ATSAMD09D14A-MUT

**Microchip Tech** · Microcontroller Units (MCUs/MPUs/SOCs) · QFN-24-EP(4x4)

ATSAMD09D14A-MUT from Microchip Tech, in a QFN-24-EP(4x4). 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 | PA02 | bidirectional | General-purpose I/O pin PA02, shown as an analog-capable pin (ADC input AIN) in the pinout. |
| 2 | PA03 | bidirectional | General-purpose I/O pin PA03, shown as an analog-capable pin in the pinout. |
| 3 | PA04 | bidirectional | General-purpose I/O pin PA04, shown as an analog-capable pin in the pinout. |
| 4 | PA05 | bidirectional | General-purpose I/O pin PA05, shown as an analog-capable pin in the pinout. |
| 5 | PA06 | bidirectional | General-purpose I/O pin PA06, shown as an analog-capable pin in the pinout. |
| 6 | PA07 | bidirectional | General-purpose I/O pin PA07, shown as an analog-capable pin in the pinout. |
| 7 | PA08 | bidirectional | General-purpose I/O pin PA08, shown with the oscillator color code in the pinout. |
| 8 | PA09 | bidirectional | General-purpose I/O pin PA09, shown with the oscillator color code in the pinout. |
| 9 | PA10 | bidirectional | General-purpose digital I/O pin PA10. |
| 10 | PA11 | bidirectional | General-purpose digital I/O pin PA11. |
| 11 | PA14 | bidirectional | General-purpose digital I/O pin PA14. |
| 12 | PA15 | bidirectional | General-purpose digital I/O pin PA15. |
| 13 | PA16 | bidirectional | General-purpose digital I/O pin PA16. |
| 14 | PA17 | bidirectional | General-purpose digital I/O pin PA17. |
| 15 | PA22 | bidirectional | General-purpose digital I/O pin PA22. |
| 16 | PA23 | bidirectional | General-purpose digital I/O pin PA23. |
| 17 | PA27 | bidirectional | General-purpose digital I/O pin PA27. |
| 18 | PA28/RST | bidirectional | Reset/GPIO pin: active-low external reset (RST) or general-purpose I/O PA28. |
| 19 | PA30 | bidirectional | General-purpose digital I/O pin PA30. |
| 20 | PA31 | bidirectional | General-purpose digital I/O pin PA31. |
| 21 | PA24 | bidirectional | General-purpose digital I/O pin PA24. |
| 22 | PA25 | bidirectional | General-purpose digital I/O pin PA25. |
| 23 | GND | power_in | Ground. |
| 24 | VDDIO/IN/ANA | power_in | Input supply for I/O, internal regulator input and analog; operating voltage 2.4V to 3.63V. |
| 25 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | QFN-24-EP(4x4) |
| Category | Embedded Processors & Controllers |
| Pins | 25 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating voltage |  | 2.4 |  | 3.63 | V | Listed under Features (Operating Voltage); no test conditions printed | 2 |
| Operating temperature (package grade U, -40 to 85 °C) |  | -40 |  | 85 | °C | Package grade 'U' in ordering code legend | 4 |
| Junction-to-ambient thermal resistance, 24-pin QFN | θJA |  | 61.7 |  | °C/W | 24-pin QFN package (Table 7-1) | 11 |
| Junction-to-case thermal resistance, 24-pin QFN | θJC |  | 25.4 |  | °C/W | 24-pin QFN package (Table 7-1) | 11 |

## CAD (KiCad official)

- Symbol: `ATSAMD09D14A-MUT`
- Footprint: `Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm`
- 3D model: QFN-24-EP(4x4) (KiCad packages3D, STEP)
- 3D model files: `atsamd09d14a-mut-etched.step` / `atsamd09d14a-mut-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `atsamd09d14a-mut.step` / `atsamd09d14a-mut.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](docs/atsamd09d14a-mut-datasheet.pdf) (17 pp, sha256 `6499da7b83f7c711`, retrieved 2026-11-05, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/atsamd09d14a-mut-datasheet.pdf)