component
ATMEGA8-16MU
Public Made by Adomby adom
Microchip Tech Pre-ordered MCUs, VQFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"type": "component",
"slug": "atmega8-16mu",
"title": "ATMEGA8-16MU",
"brief": "Microchip Tech Pre-ordered MCUs, VQFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
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"component": {
"mpn": "ATMEGA8-16MU",
"manufacturer": "Microchip Tech",
"package": "VQFN-32-EP(5x5)",
"pin_count": 33,
"category": "Embedded Processors & Controllers",
"subcategory": "Pre-ordered MCUs",
"datasheet": "https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-2486-8-bit-AVR-microcontroller-ATmega8_L_summary.pdf",
"parts": {
"symbol": "atmega8-16mu.kicad_sym",
"footprint": "atmega8-16mu.kicad_mod",
"model_3d": "atmega8-16mu-hero.glb",
"model_3d_plain": "atmega8-16mu-etched.glb",
"model_3d_step": "atmega8-16mu-etched.step",
"model_3d_step_plain": "atmega8-16mu.step",
"lbr": "atmega8-16mu.lbr"
},
"distributor_links": {
"lcsc": "C1337364",
"digikey": "ATMEGA8-16MU-ND"
},
"distributor_check": {
"checked_at": "2026-10-31T18:47:43Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "ATMEGA8-16MU-ND",
"status": "found"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "PD3",
"type": "bidirectional",
"description": "Port D bit 3, an I/O pin with internal pull-up whose alternate function is INT1 external interrupt input."
},
{
"number": "2",
"name": "PD4",
"type": "bidirectional",
"description": "Port D bit 4, an I/O pin with internal pull-up whose alternate functions are XCK (USART clock) and T0 (timer clock input)."
},
{
"number": "3",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "4",
"name": "VCC",
"type": "power_in",
"description": "Digital supply voltage, 4.5V-5.5V for ATmega8 (16MHz grade)."
},
{
"number": "5",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "6",
"name": "VCC",
"type": "power_in",
"description": "Digital supply voltage, 4.5V-5.5V for ATmega8 (16MHz grade)."
},
{
"number": "7",
"name": "PB6",
"type": "bidirectional",
"description": "Port B bit 6, an I/O pin that, depending on clock fuse settings, is the input to the inverting oscillator amplifier (XTAL1) or TOSC1 for Timer/Counter2."
},
{
"number": "8",
"name": "PB7",
"type": "bidirectional",
"description": "Port B bit 7, an I/O pin that, depending on clock fuse settings, is the output of the inverting oscillator amplifier (XTAL2) or TOSC2 for Timer/Counter2."
},
{
"number": "9",
"name": "PD5",
"type": "bidirectional",
"description": "Port D bit 5, an I/O pin with internal pull-up whose alternate function is T1 (timer clock input)."
},
{
"number": "10",
"name": "PD6",
"type": "bidirectional",
"description": "Port D bit 6, an I/O pin with internal pull-up whose alternate function is AIN0 (analog comparator positive input)."
},
{
"number": "11",
"name": "PD7",
"type": "bidirectional",
"description": "Port D bit 7, an I/O pin with internal pull-up whose alternate function is AIN1 (analog comparator negative input)."
},
{
"number": "12",
"name": "PB0",
"type": "bidirectional",
"description": "Port B bit 0, an I/O pin with internal pull-up whose alternate function is ICP1 (Timer/Counter1 input capture)."
},
{
"number": "13",
"name": "PB1",
"type": "bidirectional",
"description": "Port B bit 1, an I/O pin with internal pull-up whose alternate function is OC1A (Timer/Counter1 output compare A)."
},
{
"number": "14",
"name": "PB2",
"type": "bidirectional",
"description": "Port B bit 2, an I/O pin with internal pull-up whose alternate functions are SS (SPI slave select) and OC1B."
},
{
"number": "15",
"name": "PB3",
"type": "bidirectional",
"description": "Port B bit 3, an I/O pin with internal pull-up whose alternate functions are MOSI (SPI) and OC2."
},
{
"number": "16",
"name": "PB4",
"type": "bidirectional",
"description": "Port B bit 4, an I/O pin with internal pull-up whose alternate function is MISO (SPI)."
},
{
"number": "17",
"name": "PB5",
"type": "bidirectional",
"description": "Port B bit 5, an I/O pin with internal pull-up whose alternate function is SCK (SPI clock)."
},
{
"number": "18",
"name": "AVCC",
"type": "power_in",
"description": "Analog supply voltage pin for the ADC section."
},
{
"number": "19",
"name": "ADC6",
"type": "input",
"description": "ADC input channel 6, available in the TQFP and QFN/MLF packages."
},
{
"number": "20",
"name": "AREF",
"type": "input",
"description": "Analog reference pin for the A/D converter."
},
{
"number": "21",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "22",
"name": "ADC7",
"type": "input",
"description": "ADC input channel 7, available in the TQFP and QFN/MLF packages."
},
{
"number": "23",
"name": "PC0",
"type": "bidirectional",
"description": "Port C bit 0, an I/O pin with internal pull-up whose alternate function is ADC0 input."
},
{
"number": "24",
"name": "PC1",
"type": "bidirectional",
"description": "Port C bit 1, an I/O pin with internal pull-up whose alternate function is ADC1 input."
},
{
"number": "25",
"name": "PC2",
"type": "bidirectional",
"description": "Port C bit 2, an I/O pin with internal pull-up whose alternate function is ADC2 input."
},
{
"number": "26",
"name": "PC3",
"type": "bidirectional",
"description": "Port C bit 3, an I/O pin with internal pull-up whose alternate function is ADC3 input."
},
{
"number": "27",
"name": "PC4",
"type": "bidirectional",
"description": "Port C bit 4, an I/O pin with internal pull-up whose alternate functions are ADC4 input and SDA (two-wire interface data)."
},
{
"number": "28",
"name": "PC5",
"type": "bidirectional",
"description": "Port C bit 5, an I/O pin with internal pull-up whose alternate functions are ADC5 input and SCL (two-wire interface clock)."
},
{
"number": "29",
"name": "PC6",
"type": "bidirectional",
"description": "Active-low RESET input (a low level longer than the minimum pulse length generates a reset) or, if the RSTDISBL fuse is programmed, an I/O pin with electrical characteristics differing from other Port C pins."
},
{
"number": "30",
"name": "PD0",
"type": "bidirectional",
"description": "Port D bit 0, an I/O pin with internal pull-up whose alternate function is RXD (USART receive)."
},
{
"number": "31",
"name": "PD1",
"type": "bidirectional",
"description": "Port D bit 1, an I/O pin with internal pull-up whose alternate function is TXD (USART transmit)."
},
{
"number": "32",
"name": "PD2",
"type": "bidirectional",
"description": "Port D bit 2, an I/O pin with internal pull-up whose alternate function is INT0 external interrupt input."
},
{
"number": "33",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-sonnet-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The pin-configuration figure text is extracted without geometry. I assigned pin numbers from the pri; The datasheet text does not describe AVCC, AREF, ADC6 and ADC7. Their descriptions are inferred from; The exposed pad has no printed pad number. 'EP' is used. The note says it is internally connected to",
"1/33 pins cited to the wrong page (name found elsewhere): ['29:PC6@p5']"
],
"pages_sent": 12,
"cost_usd": 0.162,
"at": "2026-10-31T18:47:34"
},
"datasheet": {
"url": "https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-2486-8-bit-AVR-microcontroller-ATmega8_L_summary.pdf",
"pages": 12,
"sha256": "77fb79962ad7d629",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
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"footprint": "viewers/footprint.html"
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"seat": "z = 0",
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "atmega8-16mu-etched.step",
"role": "eda",
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"sha256": "58bdd2d649a56d26db421cd29465c3c7342a533fd345fe1030a116fec88c69a4",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Microchip Tech",
"Package": "VQFN-32-EP(5x5)",
"Category": "Embedded Processors & Controllers",
"Pins": "33"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "77fb79962ad7d629a534df55248d41b637d1e8a3ab8f0ac2af9fa56fe5039ef2",
"rows": [
{
"name": "Operating supply voltage",
"symbol": "VCC",
"kind": "recommended_operating",
"unit": "V",
"min": 4.5,
"typ": null,
"max": 5.5,
"conditions": "ATmega8, 16MHz speed grade",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Clock frequency (speed grade)",
"symbol": "",
"kind": "recommended_operating",
"unit": "MHz",
"min": 0,
"typ": null,
"max": 16,
"conditions": "ATmega8, 4.5 - 5.5V",
"source_page": 1,
"source": "datasheet"
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{
"name": "Operating temperature range",
"symbol": "",
"kind": "recommended_operating",
"unit": "C",
"min": -40,
"typ": null,
"max": 85,
"conditions": "Industrial, ATmega8-16MU, 32M1-A",
"source_page": 6,
"source": "datasheet"
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}
},
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"sections": [
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"discovery_triggers": [
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"discovery_pitch": "ATMEGA8-16MU (Microchip Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
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