component
ATMEGA48A-AU
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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{
"slug": "atmega48a-au",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), TQFP-32(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"single chip microcomputer-microcontroller",
"atmega48a-au",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
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"path": "docs/hero.png"
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"README.md",
"atmega48a-au.kicad_sym",
"atmega48a-au.kicad_mod",
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"atmega48a-au.step",
"atmega48a-au.lbr",
"docs/hero.png",
"docs/atmega48a-au-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
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],
"component": {
"mpn": "ATMEGA48A-AU",
"manufacturer": "Microchip Tech",
"package": "TQFP-32(7x7)",
"pin_count": 32,
"category": "Single Chip Microcomputer/Microcontroller",
"subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
"datasheet": "https://ww1.microchip.com/downloads/en/DeviceDoc/ATmega48A-PA-88A-PA-168A-PA-328-P-DS-DS40002061B.pdf",
"parts": {
"symbol": "atmega48a-au.kicad_sym",
"footprint": "atmega48a-au.kicad_mod",
"model_3d": "atmega48a-au-hero.glb",
"model_3d_plain": "atmega48a-au-etched.glb",
"model_3d_step": "atmega48a-au-etched.step",
"model_3d_step_plain": "atmega48a-au.step",
"lbr": "atmega48a-au.lbr"
},
"distributor_links": {
"lcsc": "C618734",
"digikey": "ATMEGA48A-AU-ND",
"mouser": "556-ATMEGA48A-AU"
},
"distributor_check": {
"checked_at": "2026-10-30T18:17:12Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "ATMEGA48A-AU-ND",
"status": "found"
},
"mouser": {
"pn": "556-ATMEGA48A-AU",
"status": "found",
"lifecycle": "Not Recommended for New Designs"
}
},
"pins": [
{
"number": "1",
"name": "PD3",
"type": "bidirectional",
"description": "Port D bit 3 is a bi-directional I/O pin with internal pull-up, alternate functions INT1 / OC2B / PCINT19."
},
{
"number": "2",
"name": "PD4",
"type": "bidirectional",
"description": "Port D bit 4 is a bi-directional I/O pin with internal pull-up, alternate functions XCK / T0 / PCINT20."
},
{
"number": "3",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "4",
"name": "VCC",
"type": "power_in",
"description": "Digital supply voltage."
},
{
"number": "5",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "6",
"name": "VCC",
"type": "power_in",
"description": "Digital supply voltage."
},
{
"number": "7",
"name": "PB6",
"type": "bidirectional",
"description": "Port B bit 6 is a bi-directional I/O pin with internal pull-up; depending on the clock fuse settings it is the input to the inverting oscillator amplifier (XTAL1/TOSC1) and cannot be used as I/O when used as a clock pin."
},
{
"number": "8",
"name": "PB7",
"type": "bidirectional",
"description": "Port B bit 7 is a bi-directional I/O pin with internal pull-up; depending on the clock fuse settings it is the output of the inverting oscillator amplifier (XTAL2/TOSC2) and cannot be used as I/O when used as a clock pin."
},
{
"number": "9",
"name": "PD5",
"type": "bidirectional",
"description": "Port D bit 5 is a bi-directional I/O pin with internal pull-up, alternate functions T1 / OC0B / PCINT21."
},
{
"number": "10",
"name": "PD6",
"type": "bidirectional",
"description": "Port D bit 6 is a bi-directional I/O pin with internal pull-up, alternate functions AIN0 (analog comparator positive input) / OC0A / PCINT22."
},
{
"number": "11",
"name": "PD7",
"type": "bidirectional",
"description": "Port D bit 7 is a bi-directional I/O pin with internal pull-up, alternate functions AIN1 (analog comparator negative input) / PCINT23."
},
{
"number": "12",
"name": "PB0",
"type": "bidirectional",
"description": "Port B bit 0 is a bi-directional I/O pin with internal pull-up, alternate functions ICP1 / CLKO / PCINT0."
},
{
"number": "13",
"name": "PB1",
"type": "bidirectional",
"description": "Port B bit 1 is a bi-directional I/O pin with internal pull-up, alternate functions OC1A / PCINT1."
},
{
"number": "14",
"name": "PB2",
"type": "bidirectional",
"description": "Port B bit 2 is a bi-directional I/O pin with internal pull-up, alternate functions SS / OC1B / PCINT2."
},
{
"number": "15",
"name": "PB3",
"type": "bidirectional",
"description": "Port B bit 3 is a bi-directional I/O pin with internal pull-up, alternate functions MOSI / OC2A / PCINT3."
},
{
"number": "16",
"name": "PB4",
"type": "bidirectional",
"description": "Port B bit 4 is a bi-directional I/O pin with internal pull-up, alternate functions MISO / PCINT4."
},
{
"number": "17",
"name": "PB5",
"type": "bidirectional",
"description": "Port B bit 5 is a bi-directional I/O pin with internal pull-up, alternate functions SCK / PCINT5."
},
{
"number": "18",
"name": "AVCC",
"type": "power_in",
"description": "Supply voltage pin for the A/D converter, PC3:0 and ADC7:6; it should be connected to VCC even if the ADC is not used, and through a low-pass filter if the ADC is used."
},
{
"number": "19",
"name": "ADC6",
"type": "input",
"description": "Analog input channel 6 of the 10-bit A/D converter (TQFP and VQFN package only), powered from the analog supply."
},
{
"number": "20",
"name": "AREF",
"type": "power_in",
"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": "Analog input channel 7 of the 10-bit A/D converter (TQFP and VQFN package only), powered from the analog supply."
},
{
"number": "23",
"name": "PC0",
"type": "bidirectional",
"description": "Port C bit 0 is a bi-directional I/O pin with internal pull-up, alternate functions ADC0 / PCINT8; ADC input channel 0 uses analog power."
},
{
"number": "24",
"name": "PC1",
"type": "bidirectional",
"description": "Port C bit 1 is a bi-directional I/O pin with internal pull-up, alternate functions ADC1 / PCINT9; ADC input channel 1 uses analog power."
},
{
"number": "25",
"name": "PC2",
"type": "bidirectional",
"description": "Port C bit 2 is a bi-directional I/O pin with internal pull-up, alternate functions ADC2 / PCINT10; ADC input channel 2 uses analog power."
},
{
"number": "26",
"name": "PC3",
"type": "bidirectional",
"description": "Port C bit 3 is a bi-directional I/O pin with internal pull-up, alternate functions ADC3 / PCINT11; ADC input channel 3 uses analog power."
},
{
"number": "27",
"name": "PC4",
"type": "bidirectional",
"description": "Port C bit 4 is a bi-directional I/O pin with internal pull-up, alternate functions SDA (2-wire serial data) / ADC4 / PCINT12; ADC input channel 4 uses digital power."
},
{
"number": "28",
"name": "PC5",
"type": "bidirectional",
"description": "Port C bit 5 is a bi-directional I/O pin with internal pull-up, alternate functions SCL (2-wire serial clock) / ADC5 / PCINT13; ADC input channel 5 uses digital power."
},
{
"number": "29",
"name": "PC6",
"type": "bidirectional",
"description": "Port C bit 6 is the RESET input when the RSTDISBL fuse is unprogrammed (a low level longer than the minimum pulse length generates a reset) and a normal I/O pin when RSTDISBL is programmed; alternate function PCINT14."
},
{
"number": "30",
"name": "PD0",
"type": "bidirectional",
"description": "Port D bit 0 is a bi-directional I/O pin with internal pull-up, alternate functions RXD (USART receive data input) / PCINT16."
},
{
"number": "31",
"name": "PD1",
"type": "bidirectional",
"description": "Port D bit 1 is a bi-directional I/O pin with internal pull-up, alternate functions TXD (USART transmit data output) / PCINT17."
},
{
"number": "32",
"name": "PD2",
"type": "bidirectional",
"description": "Port D bit 2 is a bi-directional I/O pin with internal pull-up, alternate functions INT0 (external interrupt 0 input) / PCINT18."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The datasheet's 32-lead TQFP is package code 32A (ordering table, page 628). The text extract does n; Pin 29 (PC6/RESET) is typed bidirectional because it is an I/O pin when RSTDISBL is programmed and a; Pins 7 and 8 (PB6/PB7) are typed bidirectional for consistency with the port; when used as crystal/c",
"12/32 pins cited to the wrong page (name found elsewhere): ['8:PB7@p91', '15:PB3@p92', '16:PB4@p92', '17:PB5@p92']"
],
"pages_sent": 126,
"cost_usd": 0.3927,
"at": "2026-10-30T18:17:04"
},
"datasheet": {
"url": "https://ww1.microchip.com/downloads/en/DeviceDoc/ATmega48A-PA-88A-PA-168A-PA-328-P-DS-DS40002061B.pdf",
"pages": 653,
"sha256": "b9b9d83cda56a95d",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 32,
"described": 32,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
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"footprint_binding": "identity",
"sha256": "53431be61c684e9d923915676a90cb08050c23ee3f834d76a77a3b19b41422f1",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "atmega48a-au-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
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"sha256": "18bd2b07172d204cca5171594eaaffd0f91baac99391783795ed438b3ce546cd",
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}