component

ATTINY25-20SSU

Public Made by Adom

by adom

Microchip Tech MICROCHIP, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentembedded processors & controllersattiny25-20ssufactory-2.0.0extractor-text

Verified ATTINY25-20SSU

by Ray · last 5 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

5 Nov 2026RayPublished by the parts factory: tier mfr, 8 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ATTINY25-20SSU · SOIC-8 · 8 pins
  • ✓copper: 8 copper pads, none touching another net
  • ✓datasheet: all 8 pin names found in the 30-page datasheet
  • ✓distributor: lcsc C1338203, digikey ATTINY25-20SSU-ND, mouser 556-ATTINY25-20SSU
  • ✓family: SOIC-8_3.9x4.9mm_P1.27mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-dl8swfuq/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.16)
  • ✓pads: 8 pins = 8 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 8 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ attiny25-20ssu.kicad_sym✓ attiny25-20ssu.kicad_mod✓ attiny25-20ssu.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray
viewers attiny25-20ssu: viewers · Ray
attiny25-20ssu-etched.glb Publish 0.1.0 · Ray
attiny25-20ssu-etched.step attiny25-20ssu: factory component page (tier=mfr) · Ray
attiny25-20ssu-hero.glb attiny25-20ssu: hero GLB from the etched model (keeps the MPN mark) · Ray
attiny25-20ssu-hero.overlay.json Publish 0.1.0 · Ray
attiny25-20ssu.glb Publish 0.1.0 · Ray
attiny25-20ssu.kicad_mod Publish 0.1.0 · Ray
attiny25-20ssu.kicad_sym Publish 0.1.0 · Ray
attiny25-20ssu.lbr Publish 0.1.0 · Ray
attiny25-20ssu.step Publish 0.1.0 · Ray
package.json Publish 0.1.1 · Ray
page.json Publish 0.1.1 · Ray
README.md Publish 0.1.0 · Ray
verification.json Verified: Published by the parts factory: tier mfr, 8 pins · Ray

ATTINY25-20SSU

Microchip Tech · MICROCHIP · SOIC-8

ATTINY25-20SSU from Microchip Tech, in a SOIC-8. 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 PB5 bidirectional Port B bit 5 with reset function: a low level longer than the minimum pulse length generates a reset, and the pin can also be used as a weak I/O pin.
2 PB3 bidirectional Port B bit 3 is a bi-directional I/O pin with internal pull-up selectable per bit, with symmetrical high sink and source drive capability.
3 PB4 bidirectional Port B bit 4 is a bi-directional I/O pin with internal pull-up selectable per bit, with symmetrical high sink and source drive capability.
4 GND power_in Ground reference for the device.
5 PB0 bidirectional Port B bit 0 is a bi-directional I/O pin with internal pull-up selectable per bit, with symmetrical high sink and source drive capability.
6 PB1 bidirectional Port B bit 1 is a bi-directional I/O pin with internal pull-up selectable per bit, with symmetrical high sink and source drive capability.
7 PB2 bidirectional Port B bit 2 is a bi-directional I/O pin with internal pull-up selectable per bit, with symmetrical high sink and source drive capability.
8 VCC power_in Supply voltage: 2.7 - 5.5V for ATtiny25/45/85 (1.8 - 5.5V for the ATtiny25V/45V/85V).

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOIC-8
Category Embedded Processors & Controllers
Pins 8

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 (ATtiny25, 20 MHz grade, Industrial) VCC 2.7 5.5 V ATtiny25-20 ordering code, 20 MHz speed grade 11
Operating frequency vs. supply voltage 0 10 MHz 2.7 - 5.5 V 1
Operating frequency vs. supply voltage 0 20 MHz 4.5 - 5.5 V 1
Operating temperature range (Industrial) -40 85 °C Industrial grade, ATtiny25-20SSU ordering code 11

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 3. Code indicators: H = NiPdAu lead finish, U/N = matte tin, R = tape & reel. 4. Can also be supplied in wafer form. Contact your local Atmel sales office for ordering information and minimum quantiti 11

CAD (KiCad official)

  • Symbol: ATTINY25-20SSU
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: attiny25-20ssu-etched.step / attiny25-20ssu-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); attiny25-20ssu.step / attiny25-20ssu.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (30 pp, sha256 31cd54bf6623a7ca, retrieved 2026-11-05, tier: manufacturer)
  • 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