ATM90E32AS-AU-R

{
  "schema_version": 1,
  "type": "component",
  "slug": "atm90e32as-au-r",
  "title": "ATM90E32AS-AU-R",
  "brief": "Microchip Tech Energy Metering, TQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.1",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "data acquisition",
    "atm90e32as-au-r",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "ATM90E32AS-AU-R",
    "manufacturer": "Microchip Tech",
    "package": "TQFP-48(7x7)",
    "pin_count": 48,
    "category": "Data Acquisition",
    "subcategory": "Energy Metering",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589834848346550272",
    "parts": {
      "symbol": "atm90e32as-au-r.kicad_sym",
      "footprint": "atm90e32as-au-r.kicad_mod",
      "model_3d": "atm90e32as-au-r-hero.glb",
      "model_3d_plain": "atm90e32as-au-r.glb",
      "model_3d_step": "atm90e32as-au-r-etched.step",
      "model_3d_step_plain": "atm90e32as-au-r.step",
      "lbr": "atm90e32as-au-r.lbr"
    },
    "distributor_links": {
      "lcsc": "C177153"
    },
    "pins": [
      {
        "number": "1",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply (3.3V); should be connected to DVDD and decoupled with a 0.1μF capacitor."
      },
      {
        "number": "2",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; provides reference for analog signal processing circuits."
      },
      {
        "number": "3",
        "name": "I1P",
        "type": "input",
        "description": "Positive input to differential ADC channel 1 for current sampling; accepts signals from 120μV to 720mV at 1x PGA gain."
      },
      {
        "number": "4",
        "name": "I1N",
        "type": "input",
        "description": "Negative input to differential ADC channel 1 for current sampling; accepts signals from 120μV to 720mV at 1x PGA gain."
      },
      {
        "number": "5",
        "name": "I2P",
        "type": "input",
        "description": "Positive input to differential ADC channel 2 for current sampling; accepts signals from 120μV to 720mV at 1x PGA gain."
      },
      {
        "number": "6",
        "name": "I2N",
        "type": "input",
        "description": "Negative input to differential ADC channel 2 for current sampling; accepts signals from 120μV to 720mV at 1x PGA gain."
      },
      {
        "number": "7",
        "name": "I3P",
        "type": "input",
        "description": "Positive input to differential ADC channel 3 for current sampling; accepts signals from 120μV to 720mV at 1x PGA gain."
      },
      {
        "number": "8",
        "name": "I3N",
        "type": "input",
        "description": "Negative input to differential ADC channel 3 for current sampling; accepts signals from 120μV to 720mV at 1x PGA gain."
      },
      {
        "number": "9",
        "name": "IC",
        "type": "passive",
        "description": "Internal test/substrate connection; must always be connected to DGND in system applications."
      },
      {
        "number": "10",
        "name": "IC",
        "type": "passive",
        "description": "Internal test/substrate connection; must always be connected to DGND in system applications."
      },
      {
        "number": "11",
        "name": "Vref",
        "type": "power_in",
        "description": "Reference voltage output (1.2V nominal) for on-chip reference circuit; should be decoupled with 4.7μF and 0.1μF capacitors."
      },
      {
        "number": "12",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; provides reference for analog signal processing circuits."
      },
      {
        "number": "13",
        "name": "V1P",
        "type": "input",
        "description": "Positive input to differential ADC channel for voltage sampling of phase 1; accepts signals from 120μV to 720mV at 1x PGA gain."
      },
      {
        "number": "14",
        "name": "V1N",
        "type": "input",
        "description": "Negative input to differential ADC channel for voltage sampling of phase 1; accepts signals from 120μV to 720mV at 1x PGA gain."
      },
      {
        "number": "15",
        "name": "V2P",
        "type": "input",
        "description": "Positive input to differential ADC channel for voltage sampling of phase 2; accepts signals from 120μV to 720mV at 1x PGA gain."
      },
      {
        "number": "16",
        "name": "V2N",
        "type": "input",
        "description": "Negative input to differential ADC channel for voltage sampling of phase 2; accepts signals from 120μV to 720mV at 1x PGA gain."
      },
      {
        "number": "17",
        "name": "V3P",
        "type": "input",
        "description": "Positive input to differential ADC channel for voltage sampling of phase 3; accepts signals from 120μV to 720mV at 1x PGA gain."
      },
      {
        "number": "18",
        "name": "V3N",
        "type": "input",
        "description": "Negative input to differential ADC channel for voltage sampling of phase 3; accepts signals from 120μV to 720mV at 1x PGA gain."
      },
      {
        "number": "19",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground; provides power return for digital circuitry."
      },
      {
        "number": "20",
        "name": "OSCI",
        "type": "input",
        "description": "Crystal oscillator input or external clock source; accepts 16.384 MHz clock with ±20 ppm accuracy and 10pF-20pF load capacitance."
      },
      {
        "number": "21",
        "name": "OSCO",
        "type": "output",
        "description": "Crystal oscillator output; connected to 16.384 MHz external crystal between OSCI and OSCO pins."
      },
      {
        "number": "22",
        "name": "ZX0",
        "type": "output",
        "description": "Zero-crossing detection output (configurable source and type); outputs digital pulse when configured voltage or current signal crosses zero threshold."
      },
      {
        "number": "23",
        "name": "ZX1",
        "type": "output",
        "description": "Zero-crossing detection output (configurable source and type); outputs digital pulse when configured voltage or current signal crosses zero threshold."
      },
      {
        "number": "24",
        "name": "ZX2",
        "type": "output",
        "description": "Zero-crossing detection output (configurable source and type); outputs digital pulse when configured voltage or current signal crosses zero threshold."
      },
      {
        "number": "25",
        "name": "CF1",
        "type": "output",
        "description": "All-phase-sum total active energy pulse output; generates pulse with 80ms width when period ≥160ms, or T/2 width for 10ms-160ms period."
      },
      {
        "number": "26",
        "name": "CF2",
        "type": "output",
        "description": "All-phase-sum total reactive or apparent energy pulse output (configurable via CF2varh bit); generates pulse with 80ms width when period ≥160ms, or T/2 width for 10ms-160ms period."
      },
      {
        "number": "27",
        "name": "CF3",
        "type": "output",
        "description": "All-phase-sum total active fundamental energy pulse output; generates pulse with 80ms width when period ≥160ms, or T/2 width for 10ms-160ms period."
      },
      {
        "number": "28",
        "name": "CF4",
        "type": "output",
        "description": "All-phase-sum total active harmonic energy pulse output; generates pulse with 80ms width when period ≥160ms, or T/2 width for 10ms-160ms period."
      },
      {
        "number": "29",
        "name": "WarnOut",
        "type": "output",
        "description": "Fatal error warning output (LVTTL); asserted high when metering-related parameter CRC checksum error is detected, otherwise stays low."
      },
      {
        "number": "30",
        "name": "IRQ0",
        "type": "output",
        "description": "Interrupt output 0 (LVTTL); asserted when interrupt events in EMMIntState0 register occur, or when current detector output activated in Detection mode."
      },
      {
        "number": "31",
        "name": "IRQ1",
        "type": "output",
        "description": "Interrupt output 1 (LVTTL); asserted when interrupt events in EMMIntState1 register occur, or when all three phase currents exceed detector threshold in Detection mode."
      },
      {
        "number": "32",
        "name": "TEST",
        "type": "input",
        "description": "Test pin (LVTTL input); must always be connected to DGND in system applications."
      },
      {
        "number": "33",
        "name": "PM0",
        "type": "input",
        "description": "Power mode configuration input (LSB); together with PM1 defines power mode (Idle=00, Detection=01, Partial Measurement=10, Normal=11)."
      },
      {
        "number": "34",
        "name": "PM1",
        "type": "input",
        "description": "Power mode configuration input (MSB); together with PM0 defines power mode (Idle=00, Detection=01, Partial Measurement=10, Normal=11)."
      },
      {
        "number": "35",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; should be left open (not connected) in system design."
      },
      {
        "number": "36",
        "name": "IC",
        "type": "passive",
        "description": "Internal test/substrate connection; must always be connected to DGND in system applications."
      },
      {
        "number": "37",
        "name": "CS",
        "type": "input",
        "description": "SPI chip select input (active low, LVTTL); must transition high-to-low for each SPI transaction and remain low for entire operation."
      },
      {
        "number": "38",
        "name": "SCLK",
        "type": "input",
        "description": "SPI serial clock input (LVTTL); provides clock for SPI slave mode data transfer at 400-1100 kbps."
      },
      {
        "number": "39",
        "name": "SDO",
        "type": "output",
        "description": "SPI serial data output (LVTTL); outputs 16-bit register data on falling edge of SCLK during SPI read operation."
      },
      {
        "number": "40",
        "name": "SDI",
        "type": "input",
        "description": "SPI serial data input (LVTTL); accepts 16-bit instruction and data on rising edge of SCLK during SPI read/write operation."
      },
      {
        "number": "41",
        "name": "RESET",
        "type": "input",
        "description": "Active-low reset input (LVTTL); resets chip registers and state when asserted, should connect through 0.1μF capacitor and 10kΩ resistor to VDD."
      },
      {
        "number": "42",
        "name": "VDD18",
        "type": "power_out",
        "description": "1.8V regulated digital power supply output from on-chip regulator; must be connected together with pin 43 and bypassed with 10μF capacitor."
      },
      {
        "number": "43",
        "name": "VDD18",
        "type": "power_out",
        "description": "1.8V regulated digital power supply output from on-chip regulator; must be connected together with pin 42 and bypassed with 10μF capacitor."
      },
      {
        "number": "44",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground; provides power return for digital circuitry."
      },
      {
        "number": "45",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; should be left open (not connected) in system design."
      },
      {
        "number": "46",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; should be left open (not connected) in system design."
      },
      {
        "number": "47",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground; provides power return for digital circuitry."
      },
      {
        "number": "48",
        "name": "DVDD",
        "type": "power_in",
        "description": "Digital power supply (3.3V); should be decoupled with 10μF and 0.1μF capacitors."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-4-6",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 84,
        "cost_usd": 0.9158,
        "at": "2026-09-18T05:22:22"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589834848346550272",
        "pages": 84,
        "sha256": "f8ce8aacae3378c5",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 48,
        "described": 48,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "14ca7676e4932e92f0eca0c6d56ce3018cd28a2531204a70ab7bbacb3eeb3cf5",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "atm90e32as-au-r-etched.step",
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        "sha256": "7a07d4469768a3962e3cb0fc9d23d39b87ddd625f4e0005c309a491a190525ed",
        "checked": "2026-11-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "TQFP-48(7x7)",
      "Category": "Data Acquisition",
      "Pins": "48"
    }
  },
  "variants": [],
  "sections": [
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  "discovery_triggers": [
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  "discovery_pitch": "ATM90E32AS-AU-R (Microchip Tech) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
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  "visibility": "public",
  "updated_at": "2026-09-24T17:17:04.892Z",
  "description": "Microchip Tech Energy Metering, TQFP-48(7x7). Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "org": "adom"
}