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ATTINY85-20SU
Public Made by Adomby adom
Microchip Tech Microcontrollers (MCU/MPU/SOC), SOIC-8-208mil. 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
markdownATTINY85-20SU
Microchip Tech · Microcontrollers (MCU/MPU/SOC) · SOIC-8-208mil
ATTINY85-20SU from Microchip Tech, in a SOIC-8-208mil. 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 is a bidirectional I/O pin with a selectable internal pull-up, and when used as RESET a low level longer than the minimum pulse length generates a reset even if the clock is not running, provided the reset pin has not been disabled. |
| 2 | PB3 | bidirectional | Port B bit 3 is a bidirectional I/O pin with a selectable internal pull-up and symmetrical high sink and source drive, and it also carries the XTAL1/CLKI clock function. |
| 3 | PB4 | bidirectional | Port B bit 4 is a bidirectional I/O pin with a selectable internal pull-up and symmetrical high sink and source drive, and it also carries the XTAL2/CLKO clock function. |
| 4 | GND | power_in | Ground reference for the device. |
| 5 | PB0 (MOSI/DI/SDA/AIN0/OC0A/OC1A/AREF/PCINT0) | bidirectional | Port B bit 0 is a bidirectional I/O pin with a selectable internal pull-up and symmetrical high sink and source drive, and it also carries the MOSI/DI/SDA and AREF alternate functions. |
| 6 | PB1 (MISO/DO/AIN1/OC0B/OC1A/PCINT1) | bidirectional | Port B bit 1 is a bidirectional I/O pin with a selectable internal pull-up and symmetrical high sink and source drive, and it also carries the MISO/DO and analog comparator input AIN1 functions. |
| 7 | PB2 (SCK/USCK/SCL/ADC1/T0/INT0/PCINT2) | bidirectional | Port B bit 2 is a bidirectional I/O pin with a selectable internal pull-up and symmetrical high sink and source drive, and it also carries the SCK/USCK/SCL and external interrupt INT0 functions. |
| 8 | VCC | power_in | Supply voltage for the device. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-8-208mil |
| Category | Embedded Processors & Controllers |
| Pins | 8 |
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 | 204 |
CAD (KiCad official)
- Symbol:
ATTINY85-20SU - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8-208mil (KiCad packages3D, STEP)
- 3D model files:
attiny85-20su-etched.step/attiny85-20su-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);attiny85-20su.step/attiny85-20su.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (234 pp, sha256
d46a1eae33c9f6e7, retrieved 2026-10-17, tier: lcsc) - 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).