AT90PWM3B-16MU

{
  "schema_version": 1,
  "type": "component",
  "slug": "at90pwm3b-16mu",
  "title": "AT90PWM3B-16MU",
  "brief": "Microchip Tech ATMEL & AVR, QFN-32-EP(7x7). 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",
    "at90pwm3b-16mu",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "AT90PWM3B-16MU",
    "manufacturer": "Microchip Tech",
    "package": "QFN-32-EP(7x7)",
    "pin_count": 33,
    "category": "Embedded Processors & Controllers",
    "subcategory": "ATMEL & AVR",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/fcb6e4c88bed66bd7529e849d08ef244.pdf",
    "parts": {
      "symbol": "at90pwm3b-16mu.kicad_sym",
      "footprint": "at90pwm3b-16mu.kicad_mod",
      "model_3d": "at90pwm3b-16mu-hero.glb",
      "model_3d_plain": "at90pwm3b-16mu-etched.glb",
      "model_3d_step": "at90pwm3b-16mu-etched.step",
      "model_3d_step_plain": "at90pwm3b-16mu.step",
      "lbr": "at90pwm3b-16mu.lbr"
    },
    "distributor_links": {
      "lcsc": "C219263",
      "digikey": "AT90PWM3B-16MU-ND",
      "mouser": "556-A90PWM3B16MU"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T16:32:45Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "AT90PWM3B-16MU-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "556-A90PWM3B16MU",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PD2",
        "type": "bidirectional",
        "description": "Port D bit 2, also PSCIN2 digital input, OC1A, and MISO_A alternate SPI function."
      },
      {
        "number": "2",
        "name": "PD3",
        "type": "bidirectional",
        "description": "Port D bit 3, also TXD DALI/UART transmit data, OC0A, SS and MOSI_A alternate functions."
      },
      {
        "number": "3",
        "name": "PC1",
        "type": "bidirectional",
        "description": "Port C bit 1, also PSCIN1 digital input and OC1B Timer 1 output compare B."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Digital supply voltage pin for the device (2.7V to 5.5V operating voltage)."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground, 0V reference for the device."
      },
      {
        "number": "6",
        "name": "PC2",
        "type": "bidirectional",
        "description": "Port C bit 2, also T0 Timer 0 clock input and PSCOUT22 output."
      },
      {
        "number": "7",
        "name": "PC3",
        "type": "bidirectional",
        "description": "Port C bit 3, also T1 Timer 1 clock input and PSCOUT23 output."
      },
      {
        "number": "8",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Port B bit 0, also MISO SPI master in slave out and PSCOUT20 output."
      },
      {
        "number": "9",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Port B bit 1, also MOSI SPI master out slave in and PSCOUT21 output."
      },
      {
        "number": "10",
        "name": "PE1",
        "type": "bidirectional",
        "description": "Port E bit 1, also XTAL1 crystal/clock input to the inverting oscillator amplifier and OC0B Timer 0 output compare B."
      },
      {
        "number": "11",
        "name": "PE2",
        "type": "bidirectional",
        "description": "Port E bit 2, also XTAL2 oscillator amplifier output and ADC0 analog input channel 0."
      },
      {
        "number": "12",
        "name": "PD4",
        "type": "bidirectional",
        "description": "Port D bit 4, also ADC1 analog input, RXD DALI/UART receive data, ICP1A and SCK_A alternate function."
      },
      {
        "number": "13",
        "name": "PD5",
        "type": "bidirectional",
        "description": "Port D bit 5, also ADC2 analog input and ACMP2 analog comparator 2 positive input."
      },
      {
        "number": "14",
        "name": "PD6",
        "type": "bidirectional",
        "description": "Port D bit 6, also ADC3 analog input, ACMPM analog comparator reference, and INT0 external interrupt."
      },
      {
        "number": "15",
        "name": "PD7",
        "type": "bidirectional",
        "description": "Port D bit 7, also ACMP0 analog comparator 0 positive input."
      },
      {
        "number": "16",
        "name": "PB2",
        "type": "bidirectional",
        "description": "Port B bit 2, also ADC5 analog input channel 5 and INT1 external interrupt."
      },
      {
        "number": "17",
        "name": "PC4",
        "type": "bidirectional",
        "description": "Port C bit 4, also ADC8 analog input channel 8 and AMP1- differential amplifier 1 negative input."
      },
      {
        "number": "18",
        "name": "PC5",
        "type": "bidirectional",
        "description": "Port C bit 5, also ADC9 analog input channel 9 and AMP1+ differential amplifier 1 positive input."
      },
      {
        "number": "19",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply voltage for the ADC, which should be connected to VCC even when the ADC is not used."
      },
      {
        "number": "20",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground, 0V reference for the analog part."
      },
      {
        "number": "21",
        "name": "AREF",
        "type": "power_in",
        "description": "Analog reference pin for the A/D converter, which can also be used as an output for external analog circuitry."
      },
      {
        "number": "22",
        "name": "PC6",
        "type": "bidirectional",
        "description": "Port C bit 6, also ADC10 analog input channel 10 and ACMP1 analog comparator 1 positive input."
      },
      {
        "number": "23",
        "name": "PB3",
        "type": "bidirectional",
        "description": "Port B bit 3, also AMP0- differential amplifier 0 negative input channel."
      },
      {
        "number": "24",
        "name": "PB4",
        "type": "bidirectional",
        "description": "Port B bit 4, also AMP0+ differential amplifier 0 positive input channel."
      },
      {
        "number": "25",
        "name": "PC7",
        "type": "bidirectional",
        "description": "Port C bit 7, also D2A DAC output."
      },
      {
        "number": "26",
        "name": "PB5",
        "type": "bidirectional",
        "description": "Port B bit 5, also ADC6 analog input channel 6 and INT2 external interrupt."
      },
      {
        "number": "27",
        "name": "PB6",
        "type": "bidirectional",
        "description": "Port B bit 6, also ADC7 analog input channel 7, ICP1B Timer 1 input capture alternate input, and PSCOUT11 output."
      },
      {
        "number": "28",
        "name": "PB7",
        "type": "bidirectional",
        "description": "Port B bit 7, also ADC4 analog input channel 4, PSCOUT01 output, and SCK SPI clock."
      },
      {
        "number": "29",
        "name": "PD0",
        "type": "bidirectional",
        "description": "Port D bit 0, also PSCOUT00 output, XCK UART transfer clock, and SS_A alternate SPI slave select."
      },
      {
        "number": "30",
        "name": "PC0",
        "type": "bidirectional",
        "description": "Port C bit 0, also PSCOUT10 output and INT3 external interrupt."
      },
      {
        "number": "31",
        "name": "PE0",
        "type": "bidirectional",
        "description": "Port E bit 0, which is RESET input when the RSTDISBL fuse is unprogrammed, and a low pulse longer than the minimum length generates a reset; it is also OCD on-chip debug I/O."
      },
      {
        "number": "32",
        "name": "PD1",
        "type": "bidirectional",
        "description": "Port D bit 1, also PSCIN0 digital input and CLKO system clock output."
      },
      {
        "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 QFN32 package has a center GND paddle that is not numbered in the datasheet pin table; per the d; Pin 31 (PE0) is typed I/O or I in the datasheet; it is listed as bidirectional, and it functions as "
        ],
        "pages_sent": 25,
        "cost_usd": 0.0382,
        "at": "2026-10-28T16:32:33"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/fcb6e4c88bed66bd7529e849d08ef244.pdf",
        "pages": 25,
        "sha256": "a17c3c1e353ab729",
        "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": [
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        "file": "at90pwm3b-16mu.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          7,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "afe831be98fa088656575ced69678652cfeb02016fd78294648a04f826511f74",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
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        "file": "at90pwm3b-16mu-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": "af2587a2d37016baf8ca36c45f99e7b4ecebb429183e5743094121cd61e13f75",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "QFN-32-EP(7x7)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "33"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "a17c3c1e353ab729acc2d47a2409f1f8f82e232254548cd997a8752d3220dbf8",
      "rows": [
        {
          "name": "Operating voltage",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Extended operating temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 105,
          "conditions": "Extended operating range",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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  "discovery_triggers": [
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  "discovery_pitch": "AT90PWM3B-16MU (Microchip Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "path": "docs/hero.png"
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}