component
ATMEGA48PA-MU
Public Made by Adomby adom
Microchip Tech MICROCHIP, VQFN-32(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "atmega48pa-mu",
"title": "ATMEGA48PA-MU",
"brief": "Microchip Tech MICROCHIP, VQFN-32(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"embedded processors & controllers",
"atmega48pa-mu",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "ATMEGA48PA-MU",
"manufacturer": "Microchip Tech",
"package": "VQFN-32(5x5)",
"pin_count": 33,
"category": "Embedded Processors & Controllers",
"subcategory": "MICROCHIP",
"datasheet": "https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/Atmel-9223-Automotive-Microcontrollers-ATmega48PA-ATmega88PA-ATmega168PA_Datasheet.pdf",
"parts": {
"symbol": "atmega48pa-mu.kicad_sym",
"footprint": "atmega48pa-mu.kicad_mod",
"model_3d": "atmega48pa-mu-hero.glb",
"model_3d_plain": "atmega48pa-mu-etched.glb",
"model_3d_step": "atmega48pa-mu-etched.step",
"model_3d_step_plain": "atmega48pa-mu.step",
"lbr": "atmega48pa-mu.lbr"
},
"distributor_links": {
"lcsc": "C32788",
"digikey": "ATMEGA48PA-MU-ND",
"mouser": "556-ATMEGA48PA-MU"
},
"distributor_check": {
"checked_at": "2026-10-28T21:24:36Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "ATMEGA48PA-MU-ND",
"status": "found"
},
"mouser": {
"pn": "556-ATMEGA48PA-MU",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "PD3",
"type": "bidirectional",
"description": "Port D bit 3 is a bidirectional I/O pin with internal pull-up; its alternate functions are INT1 external interrupt 1 input, OC2B Timer/Counter2 compare match B output, and PCINT19."
},
{
"number": "2",
"name": "PD4",
"type": "bidirectional",
"description": "Port D bit 4 is a bidirectional I/O pin with internal pull-up; its alternate functions are XCK USART external clock, T0 Timer/Counter0 external counter input, and PCINT20."
},
{
"number": "3",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "4",
"name": "VCC",
"type": "power_in",
"description": "Digital supply voltage; the datasheet operating voltage range is 2.7V to 5.5V."
},
{
"number": "5",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "6",
"name": "VCC",
"type": "power_in",
"description": "Digital supply voltage; the datasheet operating voltage range is 2.7V to 5.5V."
},
{
"number": "7",
"name": "PB6",
"type": "bidirectional",
"description": "Port B bit 6 is used as XTAL1/TOSC1 (chip clock oscillator pin 1 or external clock input, or timer oscillator input) depending on fuse and ASSR settings, otherwise a bidirectional I/O pin; it can also serve as PCINT6, and it cannot be used as I/O when used as a clock pin."
},
{
"number": "8",
"name": "PB7",
"type": "bidirectional",
"description": "Port B bit 7 is used as XTAL2/TOSC2 (output of the inverting oscillator amplifier or timer oscillator pin 2) depending on fuse and ASSR settings, otherwise a bidirectional I/O pin; it can also serve as PCINT7, and it 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 bidirectional I/O pin with internal pull-up; its alternate functions are T1 Timer/Counter1 external counter input, OC0B Timer/Counter0 compare match B output, and PCINT21."
},
{
"number": "10",
"name": "PD6",
"type": "bidirectional",
"description": "Port D bit 6 is a bidirectional I/O pin with internal pull-up; its alternate functions are AIN0 analog comparator positive input (pull-up should be disabled), OC0A Timer/Counter0 compare match A output, and PCINT22."
},
{
"number": "11",
"name": "PD7",
"type": "bidirectional",
"description": "Port D bit 7 is a bidirectional I/O pin with internal pull-up; its alternate functions are AIN1 analog comparator negative input (pull-up should be disabled), and PCINT23."
},
{
"number": "12",
"name": "PB0",
"type": "bidirectional",
"description": "Port B bit 0 is a bidirectional I/O pin with internal pull-up; its alternate functions are ICP1 Timer/Counter1 input capture input, CLKO divided system clock output, and PCINT0."
},
{
"number": "13",
"name": "PB1",
"type": "bidirectional",
"description": "Port B bit 1 is a bidirectional I/O pin with internal pull-up; its alternate functions are OC1A Timer/Counter1 compare match A output (must be configured as output) and PCINT1."
},
{
"number": "14",
"name": "PB2",
"type": "bidirectional",
"description": "Port B bit 2 is a bidirectional I/O pin with internal pull-up; its alternate functions are SS SPI slave select input, OC1B Timer/Counter1 compare match B output (must be configured as output), and PCINT2."
},
{
"number": "15",
"name": "PB3",
"type": "bidirectional",
"description": "Port B bit 3 is a bidirectional I/O pin with internal pull-up; its alternate functions are MOSI SPI master output/slave input, OC2A Timer/Counter2 compare match A output (must be configured as output), and PCINT3."
},
{
"number": "16",
"name": "PB4",
"type": "bidirectional",
"description": "Port B bit 4 is a bidirectional I/O pin with internal pull-up; its alternate functions are MISO SPI master input/slave output and PCINT4."
},
{
"number": "17",
"name": "PB5",
"type": "bidirectional",
"description": "Port B bit 5 is a bidirectional I/O pin with internal pull-up; its alternate functions are SCK SPI clock (master output or slave input) and 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 to the 10-bit A/D converter (channel 6), powered from the analog supply; available in the QFN and TQFP packages only."
},
{
"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": "Analog input to the 10-bit A/D converter (channel 7), powered from the analog supply; available in the QFN and TQFP packages only."
},
{
"number": "23",
"name": "PC0",
"type": "bidirectional",
"description": "Port C bit 0 is a bidirectional I/O pin with internal pull-up; it is also ADC input channel 0 (uses analog power) and PCINT8."
},
{
"number": "24",
"name": "PC1",
"type": "bidirectional",
"description": "Port C bit 1 is a bidirectional I/O pin with internal pull-up; it is also ADC input channel 1 (uses analog power) and PCINT9."
},
{
"number": "25",
"name": "PC2",
"type": "bidirectional",
"description": "Port C bit 2 is a bidirectional I/O pin with internal pull-up; it is also ADC input channel 2 (uses analog power) and PCINT10."
},
{
"number": "26",
"name": "PC3",
"type": "bidirectional",
"description": "Port C bit 3 is a bidirectional I/O pin with internal pull-up; it is also ADC input channel 3 (uses analog power) and PCINT11."
},
{
"number": "27",
"name": "PC4",
"type": "bidirectional",
"description": "Port C bit 4 is a bidirectional I/O pin with internal pull-up; it is also SDA 2-wire serial data I/O when TWI is enabled, ADC input channel 4 (uses digital power), and PCINT12."
},
{
"number": "28",
"name": "PC5",
"type": "bidirectional",
"description": "Port C bit 5 is a bidirectional I/O pin with internal pull-up; it is also SCL 2-wire serial clock I/O when TWI is enabled, ADC input channel 5 (uses digital power), and PCINT13."
},
{
"number": "29",
"name": "PC6",
"type": "input",
"description": "Reset input when the RSTDISBL fuse is unprogrammed (a low level longer than the minimum pulse length generates a reset); when RSTDISBL is programmed it is a general I/O pin, and it also serves as PCINT14."
},
{
"number": "30",
"name": "PD0",
"type": "bidirectional",
"description": "Port D bit 0 is a bidirectional I/O pin with internal pull-up; it is also RXD USART receive data input (configured as input when the USART receiver is enabled) and PCINT16."
},
{
"number": "31",
"name": "PD1",
"type": "bidirectional",
"description": "Port D bit 1 is a bidirectional I/O pin with internal pull-up; it is also TXD USART transmit data output (configured as output when the USART transmitter is enabled) and PCINT17."
},
{
"number": "32",
"name": "PD2",
"type": "bidirectional",
"description": "Port D bit 2 is a bidirectional I/O pin with internal pull-up; it is also INT0 external interrupt 0 input and PCINT18."
},
{
"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-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 MPN 'ATMEGA48PA-MU' does not appear in the datasheet. The ordering table (page 321) lists ATmega; The text extraction of Figure 1-1 (page 3) does not preserve the physical positions of the 32-pad QF; The exposed bottom pad (the thermal pad, which the datasheet says should be soldered to ground) is n",
"exposed pad 33 added from the footprint",
"11/33 pins cited to the wrong page (name found elsewhere): ['15:PB3@p72', '16:PB4@p72', '17:PB5@p72', '24:PC1@p75']"
],
"pages_sent": 61,
"cost_usd": 0.2571,
"at": "2026-10-28T21:24:15"
},
"datasheet": {
"url": "https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/Atmel-9223-Automotive-Microcontrollers-ATmega48PA-ATmega88PA-ATmega168PA_Datasheet.pdf",
"pages": 326,
"sha256": "626d81e6d4d566ae",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "atmega48pa-mu.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5,
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0.875
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
"checked": "2026-10-28",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "atmega48pa-mu-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "b0edcf6943c65c72b98ff575a2d91273f597502f53830af20c0af68459ec3282",
"checked": "2026-10-28",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
],
"package_dims": {
"package_code": "PN",
"source_page": 323,
"D": {
"nom_mm": 5,
"range_mm": [
null,
null
]
},
"E1": {
"nom_mm": 5,
"range_mm": [
null,
null
]
},
"e": {
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"range_mm": [
null,
null
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},
"A": {
"nom_mm": 0.85,
"range_mm": [
0.8,
0.9
]
},
"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
"model_check": {
"file": "atmega48pa-mu.step",
"verdict": "PASS",
"reasons": [
"height within the datasheet's package drawing"
],
"by": "factory/package_fit.py"
}
}
},
"metadata": {
"specs": {
"Manufacturer": "Microchip Tech",
"Package": "VQFN-32(5x5)",
"Category": "Embedded Processors & Controllers",
"Pins": "33"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "626d81e6d4d566ae44c1fadf7039b6abab88dae03d71d44f35e0f57f9a53a205",
"rows": [
{
"name": "Operating temperature",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": -55,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 268,
"source": "datasheet"
},
{
"name": "Storage temperature",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 268,
"source": "datasheet"
},
{
"name": "Voltage on any pin except RESET with respect to ground",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.5,
"typ": null,
"max": null,
"conditions": "with respect to ground",
"source_page": 268,
"source": "datasheet"
},
{
"name": "Voltage on RESET with respect to ground",
"symbol": "",
"kind": "absolute_maximum",
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"min": -0.5,
"typ": null,
"max": 13,
"conditions": "with respect to ground",
"source_page": 268,
"source": "datasheet"
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{
"name": "Maximum operating voltage",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 6,
"conditions": "",
"source_page": 268,
"source": "datasheet"
},
{
"name": "DC current per I/O pin",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 40,
"conditions": "",
"source_page": 268,
"source": "datasheet"
},
{
"name": "DC current VCC and GND pins",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 200,
"conditions": "",
"source_page": 268,
"source": "datasheet"
},
{
"name": "Supply voltage VCC",
"symbol": "VCC",
"kind": "recommended_operating",
"unit": "V",
"min": 2.7,
"typ": null,
"max": 5.5,
"conditions": "TA = -40°C to 125°C",
"source_page": 269,
"source": "datasheet"
},
{
"name": "Input low voltage, except XTAL1 and RESET pin",
"symbol": "VIL",
"kind": "electrical",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "VCC = 2.7V - 5.5V",
"source_page": 269,
"source": "datasheet"
},
{
"name": "Input low voltage, XTAL1 pin",
"symbol": "VIL1",
"kind": "electrical",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "VCC = 2.7V - 5.5V",
"source_page": 269,
"source": "datasheet"
},
{
"name": "Input low voltage, RESET pin",
"symbol": "VIL2",
"kind": "electrical",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "VCC = 2.7V - 5.5V",
"source_page": 269,
"source": "datasheet"
},
{
"name": "Output low voltage (except RESET pin)",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.8,
"conditions": "IOL = 20mA, VCC = 5V",
"source_page": 269,
"source": "datasheet"
},
{
"name": "Output low voltage (except RESET pin)",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.5,
"conditions": "IOL = 5mA, VCC = 3V",
"source_page": 269,
"source": "datasheet"
},
{
"name": "Output high voltage (except reset pin)",
"symbol": "VOH",
"kind": "electrical",
"unit": "V",
"min": 4.1,
"typ": null,
"max": null,
"conditions": "IOH = –20mA, VCC = 5V",
"source_page": 269,
"source": "datasheet"
},
{
"name": "Output high voltage (except reset pin)",
"symbol": "VOH",
"kind": "electrical",
"unit": "V",
"min": 2.3,
"typ": null,
"max": null,
"conditions": "IOH = –10mA, VCC = 3V",
"source_page": 269,
"source": "datasheet"
},
{
"name": "Input leakage current I/O pin (pin low, absolute value)",
"symbol": "IIL",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 1,
"conditions": "VCC = 5.5V, pin low (absolute value)",
"source_page": 269,
"source": "datasheet"
},
{
"name": "Input leakage current I/O pin (pin high, absolute value)",
"symbol": "IIH",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 1,
"conditions": "VCC = 5.5V, pin high (absolute value)",
"source_page": 269,
"source": "datasheet"
},
{
"name": "Reset pull-up resistor",
"symbol": "RRST",
"kind": "electrical",
"unit": "k",
"min": 30,
"typ": null,
"max": 60,
"conditions": "VCC = 5V, Vin = 0V",
"source_page": 269,
"source": "datasheet"
},
{
"name": "I/O pin pull-up resistor",
"symbol": "RPU",
"kind": "electrical",
"unit": "k",
"min": 20,
"typ": null,
"max": 50,
"conditions": "",
"source_page": 269,
"source": "datasheet"
},
{
"name": "Analog comparator input offset voltage",
"symbol": "VACIO",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 10,
"max": 40,
"conditions": "VCC = 5V, 0.1VCC < Vin < VCC – 100mV",
"source_page": 269,
"source": "datasheet"
},
{
"name": "Analog comparator input leakage current",
"symbol": "IACLK",
"kind": "electrical",
"unit": "nA",
"min": -50,
"typ": null,
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