AVR32DB28-I

{
  "schema_version": 1,
  "type": "component",
  "slug": "avr32db28-i",
  "title": "AVR32DB28-I",
  "brief": "Microchip Tech Microcontrollers (MCU/MPU/SOC), SSOP-28. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "embedded processors & controllers",
    "avr32db28-i"
  ],
  "component": {
    "mpn": "AVR32DB28-I",
    "manufacturer": "Microchip Tech",
    "package": "SSOP-28",
    "pin_count": 28,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590442912581382144",
    "parts": {
      "symbol": "avr32db28-i.kicad_sym",
      "footprint": "avr32db28-i.kicad_mod",
      "model_3d": "avr32db28-i-etched.glb",
      "model_3d_plain": "avr32db28-i.glb",
      "model_3d_step": "avr32db28-i-etched.step",
      "model_3d_step_plain": "avr32db28-i.step",
      "lbr": "avr32db28-i.lbr"
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "PA7",
        "type": "bidirectional",
        "description": "General-purpose I/O port A pin 7. Alternate functions: CLKOUT (system clock output), CCL LUT0/LUT1/LUT2 OUT, TCB0 XDIR (alt), SPI0 SS (alt), TCD0 WOD, EVSYS EVOUTA (alt). Supports asynchronous external interrupt detection."
      },
      {
        "number": "2",
        "name": "PC0",
        "type": "bidirectional",
        "description": "General-purpose I/O port C pin 0 in the VDDIO2 power domain (MVIO). Alternate functions: USART1 TxD, SPI1 MOSI, TCA0 WO0 (alt), TCB2 WO, CCL LUT1 IN0."
      },
      {
        "number": "3",
        "name": "PC1",
        "type": "bidirectional",
        "description": "General-purpose I/O port C pin 1 in the VDDIO2 power domain (MVIO). Alternate functions: USART1 RxD, SPI1 MISO, TCA0 WO1 (alt), TCB3 WO (alt), CCL LUT1 IN1."
      },
      {
        "number": "4",
        "name": "PC2",
        "type": "bidirectional",
        "description": "General-purpose I/O port C pin 2 in the VDDIO2 power domain (MVIO). Alternate functions: TWI Fm+ capable, USART1 XCK, SPI1 SCK, TWI0 SDA (host/client, alt position), TCA0 WO2 (alt), EVSYS EVOUTC, CCL LUT1 IN2."
      },
      {
        "number": "5",
        "name": "PC3",
        "type": "bidirectional",
        "description": "General-purpose I/O port C pin 3 in the VDDIO2 power domain (MVIO). Alternate functions: TWI Fm+ capable, USART1 XDIR, SPI1 SS, TWI0 SCL (host/client, alt position), TCA0 WO3 (alt), CCL LUT1 OUT."
      },
      {
        "number": "6",
        "name": "VDDIO2",
        "type": "power_in",
        "description": "Multi-Voltage I/O (MVIO) supply input for PORTC. Independent 1.8-5.5 V supply that sets the digital I/O levels for PC0-PC3 on this device. Requires local decoupling (typ. 1 µF + 100 nF) referenced to the nearest GND pin."
      },
      {
        "number": "7",
        "name": "PD1",
        "type": "bidirectional",
        "description": "General-purpose I/O port D pin 1 in the AVDD power domain. Analog function: ADC0 AIN1, OPAMP0 INP, ZCD0 ZCIN. Alternate digital functions: TCA0 WO1 (alt), CCL LUT2 IN1."
      },
      {
        "number": "8",
        "name": "PD2",
        "type": "bidirectional",
        "description": "General-purpose I/O port D pin 2 in the AVDD power domain. Analog function: ADC0 AIN2, AC0/AC1/AC2 AINP0, OPAMP0 OUT (op-amp 0 output). Alternate digital functions: TCA0 WO2 (alt), EVSYS EVOUTD, CCL LUT2 IN2."
      },
      {
        "number": "9",
        "name": "PD3",
        "type": "bidirectional",
        "description": "General-purpose I/O port D pin 3 in the AVDD power domain. Analog function: ADC0 AIN3, AC0 AINN0, AC1 AINP1, OPAMP0 INN. Alternate digital functions: TCA0 WO3 (alt), CCL LUT2 OUT."
      },
      {
        "number": "10",
        "name": "PD4",
        "type": "bidirectional",
        "description": "General-purpose I/O port D pin 4 in the AVDD power domain. Analog function: ADC0 AIN4, AC1 AINP2, AC2 AINP1, OPAMP1 INP. Alternate digital functions: TCA0 WO4 (alt)."
      },
      {
        "number": "11",
        "name": "PD5",
        "type": "bidirectional",
        "description": "General-purpose I/O port D pin 5 in the AVDD power domain. Analog function: ADC0 AIN5, AC1 AINN0, OPAMP1 OUT (op-amp 1 output). Alternate digital functions: TCA0 WO5 (alt)."
      },
      {
        "number": "12",
        "name": "PD6",
        "type": "bidirectional",
        "description": "General-purpose I/O port D pin 6 in the AVDD power domain. Analog function: ADC0 AIN6, AC0/AC1/AC2 AINP3, DAC0 OUT (10-bit DAC output). Alternate digital function: CCL LUT2 OUT (alt)."
      },
      {
        "number": "13",
        "name": "PD7",
        "type": "bidirectional",
        "description": "General-purpose I/O port D pin 7 in the AVDD power domain. Analog function: VREFA (external analog reference input for ADC/DAC), ADC0 AIN7, AC0/AC1 AINN2, AC2 AINN0/AINN2, OPAMP1 INN. Alternate digital function: EVSYS EVOUTD (alt)."
      },
      {
        "number": "14",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog supply pin (1.8-5.5 V). Internally connected to VDD on this device family, but must be externally tied to the same supply as VDD with a dedicated local decoupling capacitor (typ. 1 µF + 100 nF) to the nearest AGND pin."
      },
      {
        "number": "15",
        "name": "GND",
        "type": "power_in",
        "description": "Analog ground return (AGND) for the AVDD domain. Must be tied to the board ground plane; provides the return path for the analog decoupling capacitor on AVDD."
      },
      {
        "number": "16",
        "name": "PF0",
        "type": "bidirectional",
        "description": "General-purpose I/O port F pin 0 in the VDD power domain. Special function: XTAL32K1 (input for external 32.768 kHz crystal oscillator). Alternate functions: USART2 TxD, TCA0 WO0 (alt), TCD0 WOA (alt), CCL LUT3 IN0."
      },
      {
        "number": "17",
        "name": "PF1",
        "type": "bidirectional",
        "description": "General-purpose I/O port F pin 1 in the VDD power domain. Special function: XTAL32K2 (feedback/output for external 32.768 kHz crystal oscillator). Alternate functions: USART2 RxD, TCA0 WO1 (alt), TCD0 WOB (alt), CCL LUT3 IN1."
      },
      {
        "number": "18",
        "name": "PF6",
        "type": "input",
        "description": "External RESET input (active-low). Configurable via RSTPINCFG in the System Configuration fuses to act as either the dedicated RESET pin or an input-only PORTF pin. Internal pull-up is present; external pull-up not normally required. A logic-low level triggers a device Reset."
      },
      {
        "number": "19",
        "name": "UPDI",
        "type": "bidirectional",
        "description": "Unified Program and Debug Interface - dedicated single-wire pin for programming and debugging the device. Half-duplex UART-like protocol; connect through a series resistor to the programmer's UPDI line. Also usable as GPIO after configuring the UPDI pin function."
      },
      {
        "number": "20",
        "name": "VDD",
        "type": "power_in",
        "description": "Main digital supply input (1.8-5.5 V). Provides power to the CPU core, digital peripherals, and PORTA/PORTD/PORTF I/O. Requires local decoupling (typ. 1 µF + 100 nF) referenced to the adjacent GND pin."
      },
      {
        "number": "21",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground return for VDD. Must be tied to the board ground plane; carries the return current for the VDD decoupling capacitor."
      },
      {
        "number": "22",
        "name": "PA0",
        "type": "bidirectional",
        "description": "General-purpose I/O port A pin 0. Special functions: XTALHF1 (input for external high-frequency crystal oscillator), EXTCLK (external clock input). Alternate functions: USART0 TxD, TCA0 WO0, CCL LUT0 IN0."
      },
      {
        "number": "23",
        "name": "PA1",
        "type": "bidirectional",
        "description": "General-purpose I/O port A pin 1. Special function: XTALHF2 (feedback/output for external high-frequency crystal oscillator). Alternate functions: USART0 RxD, TCA0 WO1, CCL LUT0 IN1."
      },
      {
        "number": "24",
        "name": "PA2",
        "type": "bidirectional",
        "description": "General-purpose I/O port A pin 2. Fm+ (1 MHz) TWI capable. Alternate functions: USART0 XCK, TWI0 SDA (host/client), TCA0 WO2, TCB0 WO, EVSYS EVOUTA, CCL LUT0 IN2."
      },
      {
        "number": "25",
        "name": "PA3",
        "type": "bidirectional",
        "description": "General-purpose I/O port A pin 3. Fm+ (1 MHz) TWI capable. Alternate functions: USART0 XDIR, TWI0 SCL (host/client), TCA0 WO3, TCB1 WO, CCL LUT0 OUT."
      },
      {
        "number": "26",
        "name": "PA4",
        "type": "bidirectional",
        "description": "General-purpose I/O port A pin 4. Alternate functions: USART0 TxD (alt), SPI0 MOSI, TCA0 WO4, TCD0 WOA."
      },
      {
        "number": "27",
        "name": "PA5",
        "type": "bidirectional",
        "description": "General-purpose I/O port A pin 5. Alternate functions: USART0 RxD (alt), SPI0 MISO, TCA0 WO5, TCD0 WOB."
      },
      {
        "number": "28",
        "name": "PA6",
        "type": "bidirectional",
        "description": "General-purpose I/O port A pin 6. Alternate functions: USART0 XCK (alt), SPI0 SCK, TCD0 WOC, CCL LUT0 OUT (alt)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590442912581382144",
        "pages": null,
        "sha256": "adfeb5005d481e53",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 28,
        "described": 28,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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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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          10.2,
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
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        "sha256": "7aa76979ae41da44bded1ed74115012868f2f3f5a757faf32bb9df4f92c1e313",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      }
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "SSOP-28",
      "Category": "Embedded Processors & Controllers",
      "Pins": "28"
    }
  },
  "variants": [
    {
      "mpn": "AVR32DB28-II/SO",
      "kind": "packaging"
    },
    {
      "mpn": "AVR32DB28-IT-I/SO",
      "kind": "packaging"
    },
    {
      "mpn": "AVR32DB28-IE/SO",
      "kind": "packaging"
    },
    {
      "mpn": "AVR32DB28-IT-E/SO",
      "kind": "packaging"
    },
    {
      "mpn": "AVR32DB28-II/SS",
      "kind": "packaging"
    },
    {
      "mpn": "AVR32DB28-IT-I/SS",
      "kind": "packaging"
    },
    {
      "mpn": "AVR32DB28-IE/SS",
      "kind": "packaging"
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    {
      "mpn": "AVR32DB28-IT-E/SS",
      "kind": "packaging"
    },
    {
      "mpn": "AVR32DB28-II/SP",
      "kind": "packaging"
    },
    {
      "mpn": "AVR32DB28-IE/SP",
      "kind": "packaging"
    }
  ],
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    "info"
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  "discovery_triggers": [
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  "discovery_pitch": "AVR32DB28-I (Microchip Tech) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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    "path": "docs/hero.png"
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    "avr32db28-i.lbr",
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  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:20:46.547Z"
}