component
ATTINY404-SSF
Public Made by Adomby adom
Microchip Tech Pre-ordered MCUs, SOIC-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownATTINY404-SSF
Microchip Tech · Pre-ordered MCUs · SOIC-14
ATTINY404-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 | Input supply voltage; the ATTINY404-SSF ordering code is specified for 2.7 V to 5.5 V at up to 16 MHz, and the device is listed as operating down to 1.8 V in the general ratings. |
| 2 | PA4 | bidirectional | Port A GPIO with analog input AIN4, USART0 XDIR, SPI0 SS, TCA0 WO4 and CCL LUT0-OUT alternate functions; pin position is selected through PORTMUX where alternate positions apply. |
| 3 | PA5 | bidirectional | Port A GPIO with analog input AIN5, analog comparator AC0 OUT, TCA0 WO5 and TCB0 WO alternate functions. |
| 4 | PA6 | bidirectional | Port A GPIO with analog input AIN6, analog comparator AINN0 input and SPI0 MOSI alternate function; PA6 has full asynchronous pin-change detection that can wake the device from all sleep modes. |
| 5 | PA7 | bidirectional | Port A GPIO with analog input AIN7, analog comparator AINP0 input, SPI0 MISO and CCL LUT1-OUT alternate functions. |
| 6 | PB3 | bidirectional | Port B GPIO with USART0 RxD (alternate position) and TCA0 WO0 (alternate position) functions; alternate pin positions are selected via PORTMUX. |
| 7 | PB2 | bidirectional | Port B GPIO with event output EVOUT1, USART0 TxD and TCA0 WO2 alternate functions; PB2 has full asynchronous pin-change detection that can wake the device from all sleep modes. |
| 8 | PB1 | bidirectional | Port B GPIO with analog input AIN10, USART0 XCK, TWI0 SDA and TCA0 WO1 alternate functions. |
| 9 | PB0 | bidirectional | Port B GPIO with analog input AIN11, USART0 XDIR, TWI0 SCL and TCA0 WO0 alternate functions. |
| 10 | PA0/RESET/UPDI | bidirectional | Multiplexed pin configured by RSTPINCFG as GPIO, UPDI or RESET; enabling UPDI with 12 V requires care because the RESET pin overshoot limit is VRSTMAX = 13 V, and it also provides AIN0 and CCL LUT0-IN0. |
| 11 | PA1 | bidirectional | Port A GPIO with analog input AIN1, USART0 TxD (alternate position), SPI0 MOSI and CCL LUT0-IN1 alternate functions. |
| 12 | PA2 | bidirectional | Port A GPIO with event output EVOUT0, analog input AIN2, USART0 RxD (alternate position), SPI0 MISO and CCL LUT0-IN2 alternate functions; PA2 has full asynchronous pin-change detection that can wake the device from all sleep modes. |
| 13 | PA3/EXTCLK | bidirectional | Port A GPIO that also serves as the external clock input EXTCLK, with analog input AIN3, USART0 XCK (alternate position), SPI0 SCK and TCA0 WO3 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage (ATtiny404-SSF ordering variant) | 2.7 | 5.5 | V | 521 | |||
| Operating temperature range (ATtiny404-SSF, F grade) | -40 | 125 | °C | 521 | |||
| Max CPU speed (ATtiny404-SSF) | 16 | MHz | 521 | ||||
| Duration of UPDI.txd=0 | TUPDI | 10 | 200 | µs | 488 | ||
| Duration of Debugger.txd=0 | TDeb0 | 0.2 | 1 | µs | 488 | ||
| Duration of Debugger.txd=z | TDebZ | 200 | 14000 | µs | 488 |
CAD (KiCad official)
- Symbol:
ATTINY404-SSF - Footprint:
Package_SO:SOIC-14_3.9x8.7mm_P1.27mm - 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files:
attiny404-ssf-etched.step/attiny404-ssf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);attiny404-ssf.step/attiny404-ssf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (543 pp, sha256
92355081a8b7ac88, retrieved 2026-10-28, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).