ATMEGA48PA-MUR

{
  "slug": "atmega48pa-mur",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), VQFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "single chip microcomputer-microcontroller",
    "atmega48pa-mur",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "atmega48pa-mur.kicad_sym",
    "atmega48pa-mur.kicad_mod",
    "atmega48pa-mur.glb",
    "atmega48pa-mur.step",
    "atmega48pa-mur.lbr",
    "docs/hero.png",
    "docs/atmega48pa-mur-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "atmega48pa-mur-hero.glb",
    "atmega48pa-mur-hero.overlay.json",
    "atmega48pa-mur-etched.glb"
  ],
  "component": {
    "mpn": "ATMEGA48PA-MUR",
    "manufacturer": "Microchip Tech",
    "package": "VQFN-32-EP(5x5)",
    "pin_count": 33,
    "category": "Single Chip Microcomputer/Microcontroller",
    "subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
    "datasheet": "https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/Atmel-9223-Automotive-Microcontrollers-ATmega48PA-ATmega88PA-ATmega168PA_Datasheet.pdf",
    "parts": {
      "symbol": "atmega48pa-mur.kicad_sym",
      "footprint": "atmega48pa-mur.kicad_mod",
      "model_3d": "atmega48pa-mur-hero.glb",
      "model_3d_plain": "atmega48pa-mur-etched.glb",
      "model_3d_step": "atmega48pa-mur-etched.step",
      "model_3d_step_plain": "atmega48pa-mur.step",
      "lbr": "atmega48pa-mur.lbr"
    },
    "distributor_links": {
      "lcsc": "C2053027",
      "digikey": "ATMEGA48PA-MURTR-ND",
      "mouser": "556-ATMEGA48PA-MUR"
    },
    "distributor_check": {
      "checked_at": "2026-10-29T02:20:41Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATMEGA48PA-MURTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "556-ATMEGA48PA-MUR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PD3",
        "type": "bidirectional",
        "description": "Port D bit 3 that can serve as external interrupt 1 input (INT1) or as the OC2B Timer/Counter2 compare output, which requires the pin to be configured as an output."
      },
      {
        "number": "2",
        "name": "PD4",
        "type": "bidirectional",
        "description": "Port D bit 4 that can serve as the USART external clock (XCK) or the Timer/Counter0 external counter input (T0)."
      },
      {
        "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": "input",
        "description": "Chip clock oscillator pin 1 (XTAL1) or timer oscillator pin 1 (TOSC1), which cannot be used as an I/O pin when used as a clock pin."
      },
      {
        "number": "8",
        "name": "PB7",
        "type": "output",
        "description": "Chip clock oscillator pin 2 (XTAL2) driven as the output of the inverting oscillator amplifier, which cannot be used as an I/O pin when used as a clock pin."
      },
      {
        "number": "9",
        "name": "PD5",
        "type": "bidirectional",
        "description": "Port D bit 5 that can serve as the Timer/Counter1 external counter input (T1) or as the OC0B Timer/Counter0 compare output, which requires the pin to be configured as an output."
      },
      {
        "number": "10",
        "name": "PD6",
        "type": "bidirectional",
        "description": "Port D bit 6 that can serve as the analog comparator positive input (AIN0) or as the OC0A Timer/Counter0 compare output, which requires the pin to be configured as an output."
      },
      {
        "number": "11",
        "name": "PD7",
        "type": "bidirectional",
        "description": "Port D bit 7 that serves as the analog comparator negative input (AIN1), for which the pin should be configured as input with the internal pull-up switched off."
      },
      {
        "number": "12",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Port B bit 0 that can serve as the Timer/Counter1 input capture pin (ICP1) or as the divided system clock output (CLKO) when the CKOUT fuse is programmed."
      },
      {
        "number": "13",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Port B bit 1 that serves as the Timer/Counter1 output compare match A output (OC1A), which requires the pin to be configured as an output."
      },
      {
        "number": "14",
        "name": "PB2",
        "type": "bidirectional",
        "description": "Port B bit 2 that serves as the SPI slave select input (SS) or as the Timer/Counter1 output compare match B output (OC1B), which requires the pin to be configured as an output."
      },
      {
        "number": "15",
        "name": "PB3",
        "type": "bidirectional",
        "description": "Port B bit 3 that serves as the SPI master output/slave input (MOSI) or as the Timer/Counter2 output compare match A output (OC2A), which requires the pin to be configured as an output."
      },
      {
        "number": "16",
        "name": "PB4",
        "type": "bidirectional",
        "description": "Port B bit 4 that serves as the SPI master input/slave output (MISO) pin."
      },
      {
        "number": "17",
        "name": "PB5",
        "type": "bidirectional",
        "description": "Port B bit 5 that serves as the SPI clock pin (SCK), an input when the SPI is a slave and controlled by DDB5 when the SPI is a master."
      },
      {
        "number": "18",
        "name": "AVCC",
        "type": "power_in",
        "description": "Supply voltage pin for the A/D converter, PC3:0 and ADC7:6, which should be connected to VCC even if the ADC is not used and through a low-pass filter if it is."
      },
      {
        "number": "19",
        "name": "ADC6",
        "type": "passive",
        "description": "Analog input channel 6 of the 10-bit A/D converter, powered from the analog supply (TQFP and QFN package 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": "passive",
        "description": "Analog input channel 7 of the 10-bit A/D converter, powered from the analog supply (TQFP and QFN package only)."
      },
      {
        "number": "23",
        "name": "PC0",
        "type": "bidirectional",
        "description": "Port C bit 0 that can also serve as ADC input channel 0, which uses analog power, and as pin change interrupt source 8."
      },
      {
        "number": "24",
        "name": "PC1",
        "type": "bidirectional",
        "description": "Port C bit 1 that can also serve as ADC input channel 1, which uses analog power, and as pin change interrupt source 9."
      },
      {
        "number": "25",
        "name": "PC2",
        "type": "bidirectional",
        "description": "Port C bit 2 that can also serve as ADC input channel 2, which uses analog power, and as pin change interrupt source 10."
      },
      {
        "number": "26",
        "name": "PC3",
        "type": "bidirectional",
        "description": "Port C bit 3 that can also serve as ADC input channel 3, which uses analog power, and as pin change interrupt source 11."
      },
      {
        "number": "27",
        "name": "PC4",
        "type": "bidirectional",
        "description": "Port C bit 4 that serves as the 2-wire serial interface data I/O (SDA) when TWEN is set, and as ADC input channel 4 which uses digital power."
      },
      {
        "number": "28",
        "name": "PC5",
        "type": "bidirectional",
        "description": "Port C bit 5 that serves as the 2-wire serial interface clock I/O (SCL) when TWEN is set, and as ADC input channel 5 which uses digital power."
      },
      {
        "number": "29",
        "name": "PC6/RESET",
        "type": "input",
        "description": "Reset input when the RSTDISBL fuse is unprogrammed, where a low level longer than the minimum pulse length (Table 29-5) generates a reset; if the RSTDISBL fuse is programmed it functions as a normal I/O pin."
      },
      {
        "number": "30",
        "name": "PD0",
        "type": "bidirectional",
        "description": "Port D bit 0 that serves as the USART receive data input (RXD), configured as an input when the USART receiver is enabled."
      },
      {
        "number": "31",
        "name": "PD1",
        "type": "bidirectional",
        "description": "Port D bit 1 that serves as the USART transmit data output (TXD), configured as an output when the USART transmitter is enabled."
      },
      {
        "number": "32",
        "name": "PD2",
        "type": "bidirectional",
        "description": "Port D bit 2 that can serve as external interrupt source 0 (INT0) and as pin change interrupt source 18."
      },
      {
        "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-MUR does not appear in the datasheet text. The ordering table lists ATmega48PA-15; The exposed bottom pad is not given a pin number in the extracted text (Figure 1-1 only notes 'Botto; The Figure 1-1 pin labels were extracted out of order. Pin numbers were assigned from the figure's n",
          "exposed pad 33 added from the footprint",
          "12/33 pins cited to the wrong page (name found elsewhere): ['8:PB7 (PCINT7/XTAL2/TOSC2)@p71', '15:PB3 (PCINT3/OC2A/MOSI)@p72', '16:PB4 (PCINT4/MISO)@p72', '17:PB5 (PCINT5/SCK)@p72']"
        ],
        "pages_sent": 61,
        "cost_usd": 0.2642,
        "at": "2026-10-29T02:20:22"
      },
      "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-mur.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          5.0,
          0.875
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
        "checked": "2026-10-29",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "atmega48pa-mur-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          5.0,
          0.875
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c9f7600ffbb5c8f0971cfc272fe30c3cea45be9436b3c7d3e11ed2c355c55aeb",
        "checked": "2026-10-29",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "PN",
      "source_page": 323,
      "D": {
        "nom_mm": 5.0,
        "range_mm": [
          null,
          null
        ]
      },
      "E1": {
        "nom_mm": 5.0,
        "range_mm": [
          null,
          null
        ]
      },
      "e": {
        "nom_mm": 0.5,
        "range_mm": [
          null,
          null
        ]
      },
      "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-mur.step",
        "verdict": "PASS",
        "reasons": [
          "height within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}