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ATTINY826-SUR
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Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), SOIC-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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ATTINY826-SUR
Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · SOIC-20
ATTINY826-SUR from Microchip Tech, in a SOIC-20. 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 | Power supply input for the device, specified for 1.8V to 5.5V operation. |
| 2 | PA4 | bidirectional | PORTA pin 4 general-purpose I/O with ADC input AIN4, USART XDIR, SPI SS, TCA0 WO4 and CCL LUT0-OUT. |
| 3 | PA5 | bidirectional | PORTA pin 5 general-purpose I/O with external voltage reference input VREFA, ADC input AIN5, AC0 OUT, TCA0 WO5 and TCB0 WO. |
| 4 | PA6 | bidirectional | PORTA pin 6 general-purpose I/O with ADC input AIN6 and analog comparator negative input AINN0. |
| 5 | PA7 | bidirectional | PORTA pin 7 general-purpose I/O with ADC input AIN7, analog comparator positive input AINP0, CCL LUT1-OUT and EVOUTA on the alternative pin location. |
| 6 | PB5 | bidirectional | PORTB pin 5 general-purpose I/O with CLKOUT, ADC input AIN8, analog comparator positive input AINP1 and TCA0 WO2 on the alternative pin location. |
| 7 | PB4 | bidirectional | PORTB pin 4 general-purpose I/O with ADC input AIN9, analog comparator negative input AINN1, CCL LUT0-OUT, and RESET and TCA0 WO1 on the alternative pin location. |
| 8 | PB3 | bidirectional | PORTB pin 3 general-purpose I/O with 32 kHz crystal oscillator pin TOSC1, USART RxD, CCL LUT2-OUT and TCA0 WO0 on the alternative pin location. |
| 9 | PB2 | bidirectional | PORTB pin 2 general-purpose I/O with 32 kHz crystal oscillator pin TOSC2, EVOUTB, USART TxD, TCA0 WO2 and CCL LUT2-IN2. |
| 10 | PB1 | bidirectional | PORTB pin 1 general-purpose I/O with ADC input AIN10, analog comparator positive input AINP2, USART XCK, TWI SDA, TCA0 WO1 and CCL LUT2-IN1. |
| 11 | PB0 | bidirectional | PORTB pin 0 general-purpose I/O with ADC input AIN11, analog comparator negative input AINN2, USART XDIR, TWI SCL, TCA0 WO0 and CCL LUT2-IN0. |
| 12 | PC0 | bidirectional | PORTC pin 0 general-purpose I/O with ADC input AIN12, CCL LUT3-IN0, and USART XCK, SPI SCK and TCB0 WO on the alternative pin location. |
| 13 | PC1 | bidirectional | PORTC pin 1 general-purpose I/O with ADC input AIN13, CCL LUT3-IN1, and USART RxD, SPI MISO and LUT1-OUT on the alternative pin location. |
| 14 | PC2 | bidirectional | PORTC pin 2 general-purpose I/O with EVOUTC, ADC input AIN14, CCL LUT3-IN2, and USART TxD and SPI MOSI on the alternative pin location. |
| 15 | PC3 | bidirectional | PORTC pin 3 general-purpose I/O with ADC input AIN15, CCL LUT1-IN0, and USART XDIR, SPI SS and TCA0 WO3 on the alternative pin location. |
| 16 | PA0 | bidirectional | PORTA pin 0 general-purpose I/O that serves as the RESET pin and UPDI programming/debug pin, with CCL LUT0-IN0. |
| 17 | PA1 | bidirectional | PORTA pin 1 general-purpose I/O with ADC input AIN1, USART TXD, SPI MOSI and CCL LUT0-IN1. |
| 18 | PA2 | bidirectional | PORTA pin 2 general-purpose I/O with EVOUTA, ADC input AIN2, USART RXD, SPI MISO and CCL LUT0-IN2. |
| 19 | PA3 | bidirectional | PORTA pin 3 general-purpose I/O with external clock input EXTCLK, ADC input AIN3, USART XCK, SPI SCK, TCA0 WO3 and TCB1 WO. |
| 20 | GND | power_in | Ground reference for the device. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-20 |
| Category | Single Chip Microcomputer/Microcontroller |
| Pins | 20 |
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 | VDD | 1.8 | 5.5 | V | ATTINY826-SUR ordering table, supply voltage 1.8V-5.5V | 509 | |
| Operating temperature range | -40 | 85 | °C | ATTINY826-SUR ordering table, temperature range -40°C to +85°C | 509 |
CAD (KiCad official)
- Symbol:
ATTINY826-SUR - Footprint:
Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm - 3D model: SOIC-20 (KiCad packages3D, STEP)
- 3D model files:
attiny826-sur-etched.step/attiny826-sur-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);attiny826-sur.step/attiny826-sur.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (532 pp, sha256
654989c2c48c3753, retrieved 2026-10-27, tier: manufacturer) - 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).
# ATTINY826-SUR
**Microchip Tech** · Microcontroller Units (MCUs/MPUs/SOCs) · SOIC-20
ATTINY826-SUR from Microchip Tech, in a SOIC-20. 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 | Power supply input for the device, specified for 1.8V to 5.5V operation. |
| 2 | PA4 | bidirectional | PORTA pin 4 general-purpose I/O with ADC input AIN4, USART XDIR, SPI SS, TCA0 WO4 and CCL LUT0-OUT. |
| 3 | PA5 | bidirectional | PORTA pin 5 general-purpose I/O with external voltage reference input VREFA, ADC input AIN5, AC0 OUT, TCA0 WO5 and TCB0 WO. |
| 4 | PA6 | bidirectional | PORTA pin 6 general-purpose I/O with ADC input AIN6 and analog comparator negative input AINN0. |
| 5 | PA7 | bidirectional | PORTA pin 7 general-purpose I/O with ADC input AIN7, analog comparator positive input AINP0, CCL LUT1-OUT and EVOUTA on the alternative pin location. |
| 6 | PB5 | bidirectional | PORTB pin 5 general-purpose I/O with CLKOUT, ADC input AIN8, analog comparator positive input AINP1 and TCA0 WO2 on the alternative pin location. |
| 7 | PB4 | bidirectional | PORTB pin 4 general-purpose I/O with ADC input AIN9, analog comparator negative input AINN1, CCL LUT0-OUT, and RESET and TCA0 WO1 on the alternative pin location. |
| 8 | PB3 | bidirectional | PORTB pin 3 general-purpose I/O with 32 kHz crystal oscillator pin TOSC1, USART RxD, CCL LUT2-OUT and TCA0 WO0 on the alternative pin location. |
| 9 | PB2 | bidirectional | PORTB pin 2 general-purpose I/O with 32 kHz crystal oscillator pin TOSC2, EVOUTB, USART TxD, TCA0 WO2 and CCL LUT2-IN2. |
| 10 | PB1 | bidirectional | PORTB pin 1 general-purpose I/O with ADC input AIN10, analog comparator positive input AINP2, USART XCK, TWI SDA, TCA0 WO1 and CCL LUT2-IN1. |
| 11 | PB0 | bidirectional | PORTB pin 0 general-purpose I/O with ADC input AIN11, analog comparator negative input AINN2, USART XDIR, TWI SCL, TCA0 WO0 and CCL LUT2-IN0. |
| 12 | PC0 | bidirectional | PORTC pin 0 general-purpose I/O with ADC input AIN12, CCL LUT3-IN0, and USART XCK, SPI SCK and TCB0 WO on the alternative pin location. |
| 13 | PC1 | bidirectional | PORTC pin 1 general-purpose I/O with ADC input AIN13, CCL LUT3-IN1, and USART RxD, SPI MISO and LUT1-OUT on the alternative pin location. |
| 14 | PC2 | bidirectional | PORTC pin 2 general-purpose I/O with EVOUTC, ADC input AIN14, CCL LUT3-IN2, and USART TxD and SPI MOSI on the alternative pin location. |
| 15 | PC3 | bidirectional | PORTC pin 3 general-purpose I/O with ADC input AIN15, CCL LUT1-IN0, and USART XDIR, SPI SS and TCA0 WO3 on the alternative pin location. |
| 16 | PA0 | bidirectional | PORTA pin 0 general-purpose I/O that serves as the RESET pin and UPDI programming/debug pin, with CCL LUT0-IN0. |
| 17 | PA1 | bidirectional | PORTA pin 1 general-purpose I/O with ADC input AIN1, USART TXD, SPI MOSI and CCL LUT0-IN1. |
| 18 | PA2 | bidirectional | PORTA pin 2 general-purpose I/O with EVOUTA, ADC input AIN2, USART RXD, SPI MISO and CCL LUT0-IN2. |
| 19 | PA3 | bidirectional | PORTA pin 3 general-purpose I/O with external clock input EXTCLK, ADC input AIN3, USART XCK, SPI SCK, TCA0 WO3 and TCB1 WO. |
| 20 | GND | power_in | Ground reference for the device. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-20 |
| Category | Single Chip Microcomputer/Microcontroller |
| Pins | 20 |
## 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 | VDD | 1.8 | | 5.5 | V | ATTINY826-SUR ordering table, supply voltage 1.8V-5.5V | 509 |
| Operating temperature range | | -40 | | 85 | °C | ATTINY826-SUR ordering table, temperature range -40°C to +85°C | 509 |
## CAD (KiCad official)
- Symbol: `ATTINY826-SUR`
- Footprint: `Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm`
- 3D model: SOIC-20 (KiCad packages3D, STEP)
- 3D model files: `attiny826-sur-etched.step` / `attiny826-sur-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `attiny826-sur.step` / `attiny826-sur.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Microchip Tech datasheet](docs/attiny826-sur-datasheet.pdf) (532 pp, sha256 `654989c2c48c3753`, retrieved 2026-10-27, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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](docs/attiny826-sur-datasheet.pdf)