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ATTINY84A-SSF
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Microchip Tech Microcontrollers (MCU/MPU/SOC), 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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Contents
README
markdownATTINY84A-SSF
Microchip Tech · Microcontrollers (MCU/MPU/SOC) · SOIC-14
ATTINY84A-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 | VCC | power_in | Supply voltage pin for the device, whose operating range is stated as 1.8 to 5.5 V in the Features list. |
| 2 | PB0 (PCINT8/XTAL1/CLKI) | bidirectional | Port B bit 0 is a bidirectional I/O with selectable internal pull-up that also serves as XTAL1/CLKI and pin change interrupt PCINT8. |
| 3 | PB1 (PCINT9/XTAL2) | bidirectional | Port B bit 1 is a bidirectional I/O with selectable internal pull-up that also serves as XTAL2 and pin change interrupt PCINT9. |
| 4 | PB3 (PCINT11/RESET/dW) | bidirectional | Port B bit 3 is a bidirectional I/O that acts as the reset input (low pulse longer than the minimum in Table 20-4 generates a reset) unless the RSTDISBL fuse is programmed to '0', and also provides debugWIRE and PCINT11. |
| 5 | PB2 (PCINT10/INT0/OC0A/CKOUT) | bidirectional | Port B bit 2 is a bidirectional I/O with selectable internal pull-up that also serves as external interrupt INT0, OC0A output, clock output CKOUT and pin change interrupt PCINT10. |
| 6 | PA7 (PCINT7/ICP/OC0B/ADC7) | bidirectional | Port A bit 7 is an 8-bit bidirectional I/O pin with selectable internal pull-up that also serves as ADC channel 7, timer input capture ICP, OC0B output and pin change interrupt PCINT7. |
| 7 | PA6 (PCINT6/OC1A/SDA/MOSI/DI/ADC6) | bidirectional | Port A bit 6 is a bidirectional I/O with selectable internal pull-up that also serves as ADC channel 6, OC1A output, SDA/MOSI/DI and pin change interrupt PCINT6. |
| 8 | PA5 (ADC5/DO/MISO/OC1B/PCINT5) | bidirectional | Port A bit 5 is a bidirectional I/O with selectable internal pull-up that also serves as ADC channel 5, DO/MISO, OC1B output and pin change interrupt PCINT5. |
| 9 | PA4 (ADC4/USCK/SCL/T1/PCINT4) | bidirectional | Port A bit 4 is a bidirectional I/O with selectable internal pull-up that also serves as ADC channel 4, USCK/SCL, timer/counter input T1 and pin change interrupt PCINT4. |
| 10 | PA3 (ADC3/T0/PCINT3) | bidirectional | Port A bit 3 is a bidirectional I/O with selectable internal pull-up that also serves as ADC channel 3, timer/counter input T0 and pin change interrupt PCINT3. |
| 11 | PA2 (ADC2/AIN1/PCINT2) | bidirectional | Port A bit 2 is a bidirectional I/O with selectable internal pull-up that also serves as ADC channel 2, analog comparator input AIN1 and pin change interrupt PCINT2. |
| 12 | PA1 (ADC1/AIN0/PCINT1) | bidirectional | Port A bit 1 is a bidirectional I/O with selectable internal pull-up that also serves as ADC channel 1, analog comparator input AIN0 and pin change interrupt PCINT1. |
| 13 | PA0 (ADC0/AREF/PCINT0) | bidirectional | Port A bit 0 is a bidirectional I/O with selectable internal pull-up that also serves as ADC channel 0, ADC voltage reference AREF and pin change interrupt PCINT0. |
| 14 | GND | power_in | Ground reference pin 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 |
|---|---|---|---|---|---|---|---|
| Operating voltage | 1.8 | 5.5 | V | Operating voltage (Features list, applies to the ATtiny24A/44A/84A family) | 1 | ||
| Speed grade (max clock frequency) | 0 | 4 | MHz | 1.8, 5.5 V | 1 | ||
| Speed grade (max clock frequency) | 0 | 10 | MHz | 2.7, 5.5 V | 1 | ||
| Speed grade (max clock frequency) | 0 | 20 | MHz | 4.5, 5.5 V | 1 | ||
| Operating temperature range (ATtiny84A-SSF industrial grade) | -40 | 125 | °C | Industrial (-40°C to +125°C) grade per ordering code table for ATtiny84A-SSF (14S1 SOIC) | 13 |
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 | , H: NiPdAu lead finish, F, N, U: matte tin | 11 |
CAD (KiCad official)
- Symbol:
ATTINY84A-SSF - Footprint:
Package_SO:SOIC-14_3.9x8.7mm_P1.27mm - 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files:
attiny84a-ssf-etched.step/attiny84a-ssf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);attiny84a-ssf.step/attiny84a-ssf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (22 pp, sha256
d586ec349d151ac1, retrieved 2026-10-18, 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).