component
ATMEGA48P-20AU
Public Made by Adomby adom
Microchip Tech Pre-ordered MCUs, TQFP-32(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "atmega48p-20au",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech Pre-ordered MCUs, TQFP-32(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"embedded processors & controllers",
"atmega48p-20au",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
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"path": "docs/hero.png"
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"README.md",
"atmega48p-20au.kicad_sym",
"atmega48p-20au.kicad_mod",
"atmega48p-20au.glb",
"atmega48p-20au.step",
"atmega48p-20au.lbr",
"docs/hero.png",
"docs/atmega48p-20au-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"atmega48p-20au-hero.glb",
"atmega48p-20au-hero.overlay.json",
"atmega48p-20au-etched.glb"
],
"component": {
"mpn": "ATMEGA48P-20AU",
"manufacturer": "Microchip Tech",
"package": "TQFP-32(7x7)",
"pin_count": 32,
"category": "Embedded Processors & Controllers",
"subcategory": "Pre-ordered MCUs",
"datasheet": "https://ww1.microchip.com/downloads/en/DeviceDoc/ATmega48P_88P_168P-DS40002065A.pdf",
"parts": {
"symbol": "atmega48p-20au.kicad_sym",
"footprint": "atmega48p-20au.kicad_mod",
"model_3d": "atmega48p-20au-hero.glb",
"model_3d_plain": "atmega48p-20au-etched.glb",
"model_3d_step": "atmega48p-20au-etched.step",
"model_3d_step_plain": "atmega48p-20au.step",
"lbr": "atmega48p-20au.lbr"
},
"distributor_links": {
"lcsc": "C1339303",
"digikey": "ATMEGA48P-20AU-ND",
"mouser": "556-ATMEGA48P-20AU"
},
"distributor_check": {
"checked_at": "2026-10-30T22:11:43Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "ATMEGA48P-20AU-ND",
"status": "found"
},
"mouser": {
"pn": "556-ATMEGA48P-20AU",
"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 that can serve as external interrupt INT1, OC2B output, or PCINT19 source, and must be configured as an output for OC2B."
},
{
"number": "2",
"name": "PD4",
"type": "bidirectional",
"description": "Port D bit 4 is a bi-directional I/O pin with internal pull-up that can serve as USART external clock XCK, Timer/Counter0 external counter input T0, or PCINT20 source."
},
{
"number": "3",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "4",
"name": "VCC",
"type": "power_in",
"description": "Digital supply voltage; ATmega48P/88P/168P operates at 2.7 - 5.5V (ATmega48PV variant 1.8 - 5.5V)."
},
{
"number": "5",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "6",
"name": "VCC",
"type": "power_in",
"description": "Digital supply voltage; ATmega48P/88P/168P operates at 2.7 - 5.5V (ATmega48PV variant 1.8 - 5.5V)."
},
{
"number": "7",
"name": "PB6",
"type": "bidirectional",
"description": "Port B bit 6 is the input to the inverting oscillator amplifier (XTAL1) or Timer Oscillator pin 1 depending on clock fuse settings; when used as a clock pin it cannot be used as I/O."
},
{
"number": "8",
"name": "PB7",
"type": "bidirectional",
"description": "Port B bit 7 is the output of the inverting oscillator amplifier (XTAL2) or Timer Oscillator pin 2 depending on clock fuse settings; when used as a clock pin it cannot be used as I/O."
},
{
"number": "9",
"name": "PD5",
"type": "bidirectional",
"description": "Port D bit 5 is a bi-directional I/O pin with internal pull-up that can serve as Timer/Counter1 external counter input T1, OC0B output, or PCINT21 source."
},
{
"number": "10",
"name": "PD6",
"type": "bidirectional",
"description": "Port D bit 6 is a bi-directional I/O pin that serves as Analog Comparator positive input AIN0 (pull-up should be switched off), OC0A output, or PCINT22 source."
},
{
"number": "11",
"name": "PD7",
"type": "bidirectional",
"description": "Port D bit 7 is a bi-directional I/O pin that serves as Analog Comparator negative input AIN1 (pull-up should be switched off) or PCINT23 source."
},
{
"number": "12",
"name": "PB0",
"type": "bidirectional",
"description": "Port B bit 0 is a bi-directional I/O pin that serves as Timer/Counter1 input capture ICP1, divided system clock output CLKO, or PCINT0 source."
},
{
"number": "13",
"name": "PB1 (OC1A/PCINT1)",
"type": "bidirectional",
"description": "Port B bit 1 is a bi-directional I/O pin that serves as Timer/Counter1 output compare match A output OC1A (must be configured as output) or PCINT1 source."
},
{
"number": "14",
"name": "PB2 (SS/OC1B/PCINT2)",
"type": "bidirectional",
"description": "Port B bit 2 is a bi-directional I/O pin that serves as SPI slave select SS, Timer/Counter1 output compare match B output OC1B (must be configured as output), or PCINT2 source."
},
{
"number": "15",
"name": "PB3 (MOSI/OC2A/PCINT3)",
"type": "bidirectional",
"description": "Port B bit 3 is a bi-directional I/O pin that serves as SPI MOSI, Timer/Counter2 output compare match A output OC2A (must be configured as output), or PCINT3 source."
},
{
"number": "16",
"name": "PB4 (MISO/PCINT4)",
"type": "bidirectional",
"description": "Port B bit 4 is a bi-directional I/O pin that serves as SPI MISO data pin or PCINT4 source."
},
{
"number": "17",
"name": "PB5 (SCK/PCINT5)",
"type": "bidirectional",
"description": "Port B bit 5 is a bi-directional I/O pin that serves as SPI clock SCK (input when SPI is slave) or PCINT5 source."
},
{
"number": "18",
"name": "AVCC",
"type": "power_in",
"description": "Supply voltage pin for the A/D converter, PC3:0 and ADC7:6; it should be externally 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": "ADC input channel 6 (TQFP and QFN/MLF package only), powered from the analog supply, serving as a 10-bit ADC channel."
},
{
"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 (TQFP and QFN/MLF package only), powered from the analog supply, serving as a 10-bit ADC channel."
},
{
"number": "23",
"name": "PC0 (ADC0/PCINT8)",
"type": "bidirectional",
"description": "Port C bit 0 is a bi-directional I/O pin with internal pull-up that can serve as ADC input channel 0 (analog power) or PCINT8 source."
},
{
"number": "24",
"name": "PC1 (ADC1/PCINT9)",
"type": "bidirectional",
"description": "Port C bit 1 is a bi-directional I/O pin with internal pull-up that can serve as ADC input channel 1 (analog power) or PCINT9 source."
},
{
"number": "25",
"name": "PC2 (ADC2/PCINT10)",
"type": "bidirectional",
"description": "Port C bit 2 is a bi-directional I/O pin with internal pull-up that can serve as ADC input channel 2 (analog power) or PCINT10 source."
},
{
"number": "26",
"name": "PC3 (ADC3/PCINT11)",
"type": "bidirectional",
"description": "Port C bit 3 is a bi-directional I/O pin with internal pull-up that can serve as ADC input channel 3 (analog power) or PCINT11 source."
},
{
"number": "27",
"name": "PC4 (ADC4/SDA/PCINT12)",
"type": "bidirectional",
"description": "Port C bit 4 is a bi-directional I/O pin with internal pull-up that serves as 2-wire serial data SDA when TWEN is set, ADC input channel 4 (digital power), or PCINT12 source."
},
{
"number": "28",
"name": "PC5 (ADC5/SCL/PCINT13)",
"type": "bidirectional",
"description": "Port C bit 5 is a bi-directional I/O pin with internal pull-up that serves as 2-wire serial clock SCL when TWEN is set, ADC input channel 5 (digital power), or PCINT13 source."
},
{
"number": "29",
"name": "PC6 (RESET/PCINT14)",
"type": "input",
"description": "If RSTDISBL fuse is unprogrammed this pin is the Reset input and a low level longer than the minimum pulse length (Table 29-3) generates a reset; shorter pulses are not ensured to reset; if programmed it is I/O with electrical characteristics differing from other Port C pins."
},
{
"number": "30",
"name": "PD0 (RXD/PCINT16)",
"type": "bidirectional",
"description": "Port D bit 0 is a bi-directional I/O pin with internal pull-up that serves as USART receive data input RXD (input when USART receiver enabled) or PCINT16 source."
},
{
"number": "31",
"name": "PD1 (TXD/PCINT17)",
"type": "bidirectional",
"description": "Port D bit 1 is a bi-directional I/O pin that serves as USART transmit data output TXD (output when USART transmitter enabled) or PCINT17 source."
},
{
"number": "32",
"name": "PD2 (INT0/PCINT18)",
"type": "bidirectional",
"description": "Port D bit 2 is a bi-directional I/O pin with internal pull-up that serves as external interrupt source INT0 or PCINT18 source."
}
],
"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 pin-number-to-label assignment was reconstructed from the printed Figure 1-1 text, which is extr; Power and ground pins are listed as GND/VCC/AVCC in the figure without per-pin labels in the extract; PB6/PB7 are both oscillator pins and general I/O; they were typed bidirectional although the XTAL1 (",
"13/32 pins cited to the wrong page (name found elsewhere): ['8:PB7 (XTAL2/TOSC2/PCINT7)@p92', '12:PB0 (ICP1/CLKO/PCINT0)@p92', '15:PB3 (MOSI/OC2A/PCINT3)@p93', '16:PB4 (MISO/PCINT4)@p93']"
],
"pages_sent": 76,
"cost_usd": 0.2779,
"at": "2026-10-30T22:11:33"
},
"datasheet": {
"url": "https://ww1.microchip.com/downloads/en/DeviceDoc/ATmega48P_88P_168P-DS40002065A.pdf",
"pages": 436,
"sha256": "aab081a362918ab9",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 32,
"described": 32,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "atmega48p-20au.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
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9.0,
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"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "53431be61c684e9d923915676a90cb08050c23ee3f834d76a77a3b19b41422f1",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "atmega48p-20au-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
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"footprint_binding": "identity",
"sha256": "eb46ca091d91c663a213cf81f0cb14cfbbee95875c60cff6a1f0d5f8fec8605b",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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}