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ATTINY84-20SSU
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
markdownATTINY84-20SSU
Microchip Tech · Pre-ordered MCUs · SOIC-14
ATTINY84-20SSU 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 | VCC | power_in | Supply voltage, 2.7-5.5V for ATtiny84 (1.8-5.5V for ATtiny84V). |
| 2 | PB0 | bidirectional | Port B bit 0, bidirectional I/O with selectable internal pull-up; alternate functions PCINT8, XTAL1, CLKI. |
| 3 | PB1 | bidirectional | Port B bit 1, bidirectional I/O with selectable internal pull-up; alternate functions PCINT9, XTAL2. |
| 4 | PB3 | bidirectional | Port B bit 3 with RESET capability: a low level longer than the minimum pulse length generates a reset, or it can be used as a weak I/O pin by programming ('0') the RSTDISBL fuse; also PCINT11 and dW. |
| 5 | PB2 | bidirectional | Port B bit 2, bidirectional I/O with selectable internal pull-up; alternate functions PCINT10, INT0, OC0A, CKOUT. |
| 6 | PA7 | bidirectional | Port A bit 7, bidirectional I/O with selectable internal pull-up; alternate functions PCINT7, ICP, OC0B, ADC7. |
| 7 | PA6 | bidirectional | Port A bit 6, bidirectional I/O with selectable internal pull-up; alternate functions PCINT6, OC1A, SDA, MOSI, DI, ADC6. |
| 8 | PA5 | bidirectional | Port A bit 5, bidirectional I/O with selectable internal pull-up; alternate functions ADC5, DO, MISO, OC1B, PCINT5. |
| 9 | PA4 | bidirectional | Port A bit 4, bidirectional I/O with selectable internal pull-up; alternate functions ADC4, USCK, SCL, T1, PCINT4. |
| 10 | PA3 | bidirectional | Port A bit 3, bidirectional I/O with selectable internal pull-up; alternate functions ADC3, T0, PCINT3. |
| 11 | PA2 | bidirectional | Port A bit 2, bidirectional I/O with selectable internal pull-up; alternate functions ADC2, AIN1, PCINT2. |
| 12 | PA1 | bidirectional | Port A bit 1, bidirectional I/O with selectable internal pull-up; alternate functions ADC1, AIN0, PCINT1. |
| 13 | PA0 | bidirectional | Port A bit 0, bidirectional I/O with selectable internal pull-up; alternate functions ADC0, AREF, PCINT0. |
| 14 | GND | power_in | Ground. |
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 |
|---|---|---|---|---|---|---|---|
| Operating voltage | VCC | 2.7 | 5.5 | V | ATtiny24/44/84 (non-V) | 1 | |
| Clock frequency (2.7 - 5.5V) | 0 | 10 | MHz | @ 2.7 - 5.5V | 1 | ||
| Clock frequency (4.5 - 5.5V) | 0 | 20 | MHz | @ 4.5 - 5.5V | 1 | ||
| Operating temperature (industrial) | -40 | 85 | °C | Industrial Temperature Range | 1 |
CAD (KiCad official)
- Symbol:
ATTINY84-20SSU - Footprint:
Package_SO:SOIC-14_3.9x8.7mm_P1.27mm - 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files:
attiny84-20ssu-etched.step/attiny84-20ssu-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);attiny84-20ssu.step/attiny84-20ssu.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (26 pp, sha256
b76f1ec41378e6df, retrieved 2026-10-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).