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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.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 (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