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ATTINY2313A-SU

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Microchip Tech ATMEL & AVR, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ATTINY2313A-SU

Microchip Tech · ATMEL & AVR · SOIC-20-300mil

ATTINY2313A-SU from Microchip Tech, in a SOIC-20-300mil. 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 PA2 input Port A bit 2 with alternate functions RESET/dW/PCINT10; a low level longer than the minimum pulse length generates a reset unless the RSTDISBL fuse is programmed to use it as I/O.
2 PD0 bidirectional Port D bit 0 bi-directional I/O with internal pull-up, alternate functions RXD/PCINT11.
3 PD1 bidirectional Port D bit 1 bi-directional I/O with internal pull-up, alternate functions TXD/PCINT12.
4 PA1 bidirectional Port A bit 1 I/O with internal pull-up; alternate function XTAL2 is the output from the inverting oscillator amplifier (also PCINT9).
5 PA0 bidirectional Port A bit 0 I/O with internal pull-up; alternate function XTAL1 is the input to the inverting oscillator amplifier and internal clock circuit (also CLKI/PCINT8).
6 PD2 bidirectional Port D bit 2 bi-directional I/O with internal pull-up, alternate functions CKOUT/XCK/INT0/PCINT13.
7 PD3 bidirectional Port D bit 3 bi-directional I/O with internal pull-up, alternate functions INT1/PCINT14.
8 PD4 bidirectional Port D bit 4 bi-directional I/O with internal pull-up, alternate functions T0/PCINT15.
9 PD5 bidirectional Port D bit 5 bi-directional I/O with internal pull-up, alternate functions OC0B/T1/PCINT16.
10 GND power_in Ground.
11 PD6 bidirectional Port D bit 6 bi-directional I/O with internal pull-up, alternate functions ICPI/PCINT17.
12 PB0 bidirectional Port B bit 0 bi-directional I/O with internal pull-up, alternate functions AIN0/PCINT0.
13 PB1 bidirectional Port B bit 1 bi-directional I/O with internal pull-up, alternate functions AIN1/PCINT1.
14 PB2 bidirectional Port B bit 2 bi-directional I/O with internal pull-up, alternate functions OC0A/PCINT2.
15 PB3 bidirectional Port B bit 3 bi-directional I/O with internal pull-up, alternate functions OC1A/PCINT3.
16 PB4 bidirectional Port B bit 4 bi-directional I/O with internal pull-up, alternate functions OC1B/PCINT4.
17 PB5 bidirectional Port B bit 5 bi-directional I/O with internal pull-up, alternate functions MOSI/DI/SDA/PCINT5.
18 PB6 bidirectional Port B bit 6 bi-directional I/O with internal pull-up, alternate functions MISO/DO/PCINT6.
19 PB7 bidirectional Port B bit 7 bi-directional I/O with internal pull-up, alternate functions USCK/SCL/SCK/PCINT7.
20 VCC power_in Digital supply voltage, 1.8 - 5.5V operating range.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOIC-20-300mil
Category Embedded Processors & Controllers
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
Operating Voltage VCC 1.8 5.5 V 1
Operating Temperature Range (Industrial) -40 85 °C Industrial 1
Clock Speed 0 4 MHz 1.8, 5.5V 1
Clock Speed 0 10 MHz 2.7, 5.5V 1
Clock Speed 0 20 MHz 4.5, 5.5V 1

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, U or N: matte tin 12

CAD (KiCad official)

  • Symbol: ATTINY2313A-SU
  • Footprint: Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm
  • 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
  • 3D model files: attiny2313a-su-etched.step / attiny2313a-su-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); attiny2313a-su.step / attiny2313a-su.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Microchip Tech datasheet (22 pp, sha256 bb50254d14d9fd25, retrieved 2026-10-23, tier: lcsc)
  • 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