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ATMEGA168-20AUR

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Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), TQFP-32(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentembedded processors & controllersatmega168-20aurfactory-2.0.0extractor-text

Verified ATMEGA168-20AUR

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier mfr, 32 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ATMEGA168-20AUR · TQFP-32(7x7) · 32 pins
  • ✓copper: 32 copper pads, none touching another net
  • ✓datasheet: all 32 pin names found in the 25-page datasheet
  • ✓distributor: lcsc C2053963, digikey ATMEGA168-20AURTR-ND, mouser 556-ATMEGA168-20AUR
  • ✓family: TQFP-32_7x7mm_P0.8mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-b8tynpt5/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 32 pins = 32 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 32 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ atmega168-20aur.kicad_sym✓ atmega168-20aur.kicad_mod✓ atmega168-20aur.step
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Symbol & Footprint

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Contents

README

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ATMEGA168-20AUR

Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · TQFP-32(7x7)

ATMEGA168-20AUR from Microchip Tech, in a TQFP-32(7x7). 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 PD3 bidirectional Port D bit 3 is a bidirectional I/O with internal pull-up, also usable as INT1, PCINT19 or OC2B.
2 PD4 bidirectional Port D bit 4 is a bidirectional I/O with internal pull-up, also usable as T0, XCK0 or PCINT20.
3 GND power_in Ground reference pin for the digital circuitry.
4 VCC power_in Digital supply voltage pin.
5 GND power_in Ground reference pin for the digital circuitry.
6 VCC power_in Digital supply voltage pin.
7 PB6 bidirectional Port B bit 6 is an I/O pin that serves as input to the inverting oscillator amplifier (XTAL1/TOSC1) depending on fuse settings.
8 PB7 bidirectional Port B bit 7 is an I/O pin that serves as output of the inverting oscillator amplifier (XTAL2/TOSC2) depending on fuse settings.
9 PD5 bidirectional Port D bit 5 is a bidirectional I/O with internal pull-up, also usable as T1, OC0B or PCINT21.
10 PD6 bidirectional Port D bit 6 is a bidirectional I/O with internal pull-up, also usable as AIN0, OC0A or PCINT22.
11 PD7 bidirectional Port D bit 7 is a bidirectional I/O with internal pull-up, also usable as AIN1 or PCINT23.
12 PB0 bidirectional Port B bit 0 is a bidirectional I/O with internal pull-up, also usable as ICP1, CLKO or PCINT0.
13 PB1 bidirectional Port B bit 1 is a bidirectional I/O with internal pull-up, also usable as OC1A or PCINT1.
14 PB2 bidirectional Port B bit 2 is a bidirectional I/O with internal pull-up, also usable as SS, OC1B or PCINT2.
15 PB3 bidirectional Port B bit 3 is a bidirectional I/O with internal pull-up, also usable as MOSI, OC2A or PCINT3.
16 PB4 bidirectional Port B bit 4 is a bidirectional I/O with internal pull-up, also usable as MISO or PCINT4.
17 PB5 bidirectional Port B bit 5 is a bidirectional I/O with internal pull-up, also usable as SCK or PCINT5.
18 AVCC power_in Supply voltage pin for the A/D converter, which should be connected to VCC even when the ADC is unused.
19 ADC6 passive Analog input channel 6 of the 10-bit A/D converter, powered from the analog supply.
20 AREF passive Analog reference pin for the A/D converter.
21 GND power_in Ground reference pin for the digital circuitry.
22 ADC7 passive Analog input channel 7 of the 10-bit A/D converter, powered from the analog supply.
23 PC0 bidirectional Port C bit 0 is a bidirectional I/O with internal pull-up, also usable as ADC0 or PCINT8.
24 PC1 bidirectional Port C bit 1 is a bidirectional I/O with internal pull-up, also usable as ADC1 or PCINT9.
25 PC2 bidirectional Port C bit 2 is a bidirectional I/O with internal pull-up, also usable as ADC2 or PCINT10.
26 PC3 bidirectional Port C bit 3 is a bidirectional I/O with internal pull-up, also usable as ADC3 or PCINT11.
27 PC4 bidirectional Port C bit 4 is a bidirectional I/O with internal pull-up, also usable as ADC4, SDA or PCINT12.
28 PC5 bidirectional Port C bit 5 is a bidirectional I/O with internal pull-up, also usable as ADC5, SCL or PCINT13.
29 PC6/RESET input Reset input when the RSTDISBL fuse is unprogrammed; a low level longer than the minimum pulse length generates a reset, otherwise it is an I/O pin with electrical characteristics differing from other Port C pins.
30 PD0 bidirectional Port D bit 0 is a bidirectional I/O with internal pull-up, also usable as RXD0 or PCINT16.
31 PD1 bidirectional Port D bit 1 is a bidirectional I/O with internal pull-up, also usable as TXD0 or PCINT17.
32 PD2 bidirectional Port D bit 2 is a bidirectional I/O with internal pull-up, also usable as INT0 or PCINT18.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package TQFP-32(7x7)
Category Embedded Processors & Controllers
Pins 32

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 (ATmega168) 2.7 5.5 V 2
Speed grade 0-20 MHz 0 20 MHz @ 4.5V - 5.5V 2
Temperature range (industrial) -40 85 °C 2

CAD (KiCad official)

  • Symbol: ATMEGA168-20AUR
  • Footprint: Package_QFP:TQFP-32_7x7mm_P0.8mm
  • 3D model: TQFP-32(7x7) (KiCad packages3D, STEP)
  • 3D model files: atmega168-20aur-etched.step / atmega168-20aur-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atmega168-20aur.step / atmega168-20aur.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (25 pp, sha256 2391f8414ea893b9, retrieved 2026-10-30, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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