component
ATMEGA168-20AUR
Public Made by Adomby adom
Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), TQFP-32(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"type": "component",
"slug": "atmega168-20aur",
"title": "ATMEGA168-20AUR",
"brief": "Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), TQFP-32(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
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"component": {
"mpn": "ATMEGA168-20AUR",
"manufacturer": "Microchip Tech",
"package": "TQFP-32(7x7)",
"pin_count": 32,
"category": "Embedded Processors & Controllers",
"subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
"datasheet": "https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-2545-8-bit-AVR-Microcontroller-ATmega48-88-168_Summary.pdf",
"parts": {
"symbol": "atmega168-20aur.kicad_sym",
"footprint": "atmega168-20aur.kicad_mod",
"model_3d": "atmega168-20aur-hero.glb",
"model_3d_plain": "atmega168-20aur-etched.glb",
"model_3d_step": "atmega168-20aur-etched.step",
"model_3d_step_plain": "atmega168-20aur.step",
"lbr": "atmega168-20aur.lbr"
},
"distributor_links": {
"lcsc": "C2053963",
"digikey": "ATMEGA168-20AURTR-ND",
"mouser": "556-ATMEGA168-20AUR"
},
"distributor_check": {
"checked_at": "2026-10-30T22:46:37Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "ATMEGA168-20AURTR-ND",
"status": "found"
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"pn": "556-ATMEGA168-20AUR",
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},
"pins": [
{
"number": "1",
"name": "PD3",
"type": "bidirectional",
"description": "Port D bit 3 is a bidirectional I/O with internal pull-up, also usable as INT1, PCINT19 or OC2B."
},
{
"number": "2",
"name": "PD4",
"type": "bidirectional",
"description": "Port D bit 4 is a bidirectional I/O with internal pull-up, also usable as T0, XCK0 or PCINT20."
},
{
"number": "3",
"name": "GND",
"type": "power_in",
"description": "Ground reference pin for the digital circuitry."
},
{
"number": "4",
"name": "VCC",
"type": "power_in",
"description": "Digital supply voltage pin."
},
{
"number": "5",
"name": "GND",
"type": "power_in",
"description": "Ground reference pin for the digital circuitry."
},
{
"number": "6",
"name": "VCC",
"type": "power_in",
"description": "Digital supply voltage pin."
},
{
"number": "7",
"name": "PB6",
"type": "bidirectional",
"description": "Port B bit 6 is an I/O pin that serves as input to the inverting oscillator amplifier (XTAL1/TOSC1) depending on fuse settings."
},
{
"number": "8",
"name": "PB7",
"type": "bidirectional",
"description": "Port B bit 7 is an I/O pin that serves as output of the inverting oscillator amplifier (XTAL2/TOSC2) depending on fuse settings."
},
{
"number": "9",
"name": "PD5",
"type": "bidirectional",
"description": "Port D bit 5 is a bidirectional I/O with internal pull-up, also usable as T1, OC0B or PCINT21."
},
{
"number": "10",
"name": "PD6",
"type": "bidirectional",
"description": "Port D bit 6 is a bidirectional I/O with internal pull-up, also usable as AIN0, OC0A or PCINT22."
},
{
"number": "11",
"name": "PD7",
"type": "bidirectional",
"description": "Port D bit 7 is a bidirectional I/O with internal pull-up, also usable as AIN1 or PCINT23."
},
{
"number": "12",
"name": "PB0",
"type": "bidirectional",
"description": "Port B bit 0 is a bidirectional I/O with internal pull-up, also usable as ICP1, CLKO or PCINT0."
},
{
"number": "13",
"name": "PB1",
"type": "bidirectional",
"description": "Port B bit 1 is a bidirectional I/O with internal pull-up, also usable as OC1A or PCINT1."
},
{
"number": "14",
"name": "PB2",
"type": "bidirectional",
"description": "Port B bit 2 is a bidirectional I/O with internal pull-up, also usable as SS, OC1B or PCINT2."
},
{
"number": "15",
"name": "PB3",
"type": "bidirectional",
"description": "Port B bit 3 is a bidirectional I/O with internal pull-up, also usable as MOSI, OC2A or PCINT3."
},
{
"number": "16",
"name": "PB4",
"type": "bidirectional",
"description": "Port B bit 4 is a bidirectional I/O with internal pull-up, also usable as MISO or PCINT4."
},
{
"number": "17",
"name": "PB5",
"type": "bidirectional",
"description": "Port B bit 5 is a bidirectional I/O with internal pull-up, also usable as SCK or PCINT5."
},
{
"number": "18",
"name": "AVCC",
"type": "power_in",
"description": "Supply voltage pin for the A/D converter, which should be connected to VCC even when the ADC is unused."
},
{
"number": "19",
"name": "ADC6",
"type": "passive",
"description": "Analog input channel 6 of the 10-bit A/D converter, powered from the analog supply."
},
{
"number": "20",
"name": "AREF",
"type": "passive",
"description": "Analog reference pin for the A/D converter."
},
{
"number": "21",
"name": "GND",
"type": "power_in",
"description": "Ground reference pin for the digital circuitry."
},
{
"number": "22",
"name": "ADC7",
"type": "passive",
"description": "Analog input channel 7 of the 10-bit A/D converter, powered from the analog supply."
},
{
"number": "23",
"name": "PC0",
"type": "bidirectional",
"description": "Port C bit 0 is a bidirectional I/O with internal pull-up, also usable as ADC0 or PCINT8."
},
{
"number": "24",
"name": "PC1",
"type": "bidirectional",
"description": "Port C bit 1 is a bidirectional I/O with internal pull-up, also usable as ADC1 or PCINT9."
},
{
"number": "25",
"name": "PC2",
"type": "bidirectional",
"description": "Port C bit 2 is a bidirectional I/O with internal pull-up, also usable as ADC2 or PCINT10."
},
{
"number": "26",
"name": "PC3",
"type": "bidirectional",
"description": "Port C bit 3 is a bidirectional I/O with internal pull-up, also usable as ADC3 or PCINT11."
},
{
"number": "27",
"name": "PC4",
"type": "bidirectional",
"description": "Port C bit 4 is a bidirectional I/O with internal pull-up, also usable as ADC4, SDA or PCINT12."
},
{
"number": "28",
"name": "PC5",
"type": "bidirectional",
"description": "Port C bit 5 is a bidirectional I/O with internal pull-up, also usable as ADC5, SCL or PCINT13."
},
{
"number": "29",
"name": "PC6/RESET",
"type": "input",
"description": "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."
},
{
"number": "30",
"name": "PD0",
"type": "bidirectional",
"description": "Port D bit 0 is a bidirectional I/O with internal pull-up, also usable as RXD0 or PCINT16."
},
{
"number": "31",
"name": "PD1",
"type": "bidirectional",
"description": "Port D bit 1 is a bidirectional I/O with internal pull-up, also usable as TXD0 or PCINT17."
},
{
"number": "32",
"name": "PD2",
"type": "bidirectional",
"description": "Port D bit 2 is a bidirectional I/O with internal pull-up, also usable as INT0 or PCINT18."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
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"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
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"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [],
"pages_sent": 25,
"cost_usd": 0.0362,
"at": "2026-10-30T22:46:26"
},
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"sha256": "2391f8414ea893b9",
"source_tier": "mfr"
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"cad": "KiCad official (CC-BY-SA 4.0)",
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"metadata": {
"specs": {
"Manufacturer": "Microchip Tech",
"Package": "TQFP-32(7x7)",
"Category": "Embedded Processors & Controllers",
"Pins": "32"
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"characteristics": {
"version": 1,
"source": "datasheet",
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"name": "Operating voltage (ATmega168)",
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"name": "Speed grade 0-20 MHz",
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"conditions": "@ 4.5V - 5.5V",
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{
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"email": "[email protected]"
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