ATMEGA48PA-AU

{
  "schema_version": 1,
  "type": "component",
  "slug": "atmega48pa-au",
  "title": "ATMEGA48PA-AU",
  "brief": "Microchip Microcontrollers (MCU/MPU/SOC), TQFP-32(7x7). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "mcu",
    "atmega48pa-au"
  ],
  "component": {
    "mpn": "ATMEGA48PA-AU",
    "manufacturer": "Microchip",
    "package": "TQFP-32(7x7)",
    "pin_count": 32,
    "category": "MCU",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/245b65bf4de341d0bb9e6a5fd781e118.pdf",
    "parts": {
      "symbol": "atmega48pa-au.kicad_sym",
      "footprint": "atmega48pa-au.kicad_mod",
      "model_3d": "atmega48pa-au-etched.glb",
      "model_3d_plain": "atmega48pa-au.glb",
      "model_3d_step": "atmega48pa-au-etched.step",
      "model_3d_step_plain": "atmega48pa-au.step",
      "lbr": "atmega48pa-au.lbr"
    },
    "distributor_links": {
      "digikey": "ATMEGA48PA-AU-ND",
      "lcsc": "C9433"
    },
    "pins": [
      {
        "number": "1",
        "name": "PD3/PCINT19/OC2B/INT1",
        "type": "bidirectional",
        "description": "Port D bit 3, general-purpose bidirectional I/O with internal pull-up. Alt: PCINT19 (pin-change interrupt), OC2B (Timer/Counter2 output-compare B / PWM), INT1 (external interrupt 1)."
      },
      {
        "number": "2",
        "name": "PD4/PCINT20/XCK/T0",
        "type": "bidirectional",
        "description": "Port D bit 4, general-purpose bidirectional I/O with internal pull-up. Alt: PCINT20, XCK (USART external clock), T0 (Timer/Counter0 external clock input)."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground (0 V) reference."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Digital supply voltage, 1.8 V to 5.5 V. Decouple locally to GND."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground (0 V) reference."
      },
      {
        "number": "6",
        "name": "VCC",
        "type": "power_in",
        "description": "Digital supply voltage, 1.8 V to 5.5 V. Decouple locally to GND."
      },
      {
        "number": "7",
        "name": "PB6/PCINT6/XTAL1/TOSC1",
        "type": "bidirectional",
        "description": "Port B bit 6 with pull-up. Depending on CKSEL fuses, serves as XTAL1 (crystal oscillator input) or TOSC1 (async Timer/Counter2 oscillator input when AS2 is set). Otherwise general I/O."
      },
      {
        "number": "8",
        "name": "PB7/PCINT7/XTAL2/TOSC2",
        "type": "bidirectional",
        "description": "Port B bit 7 with pull-up. Depending on CKSEL fuses, serves as XTAL2 (crystal oscillator output) or TOSC2 (async Timer/Counter2 oscillator when AS2 is set)."
      },
      {
        "number": "9",
        "name": "PD5/PCINT21/OC0B/T1",
        "type": "bidirectional",
        "description": "Port D bit 5, general-purpose bidirectional I/O with pull-up. Alt: PCINT21, OC0B (Timer/Counter0 output-compare B / PWM), T1 (Timer/Counter1 external clock input)."
      },
      {
        "number": "10",
        "name": "PD6/PCINT22/OC0A/AIN0",
        "type": "bidirectional",
        "description": "Port D bit 6, general-purpose bidirectional I/O with pull-up. Alt: PCINT22, OC0A (Timer0 output-compare A / PWM), AIN0 (analog comparator positive input)."
      },
      {
        "number": "11",
        "name": "PD7/PCINT23/AIN1",
        "type": "bidirectional",
        "description": "Port D bit 7, general-purpose bidirectional I/O with pull-up. Alt: PCINT23, AIN1 (analog comparator negative input)."
      },
      {
        "number": "12",
        "name": "PB0/PCINT0/CLKO/ICP1",
        "type": "bidirectional",
        "description": "Port B bit 0, general-purpose bidirectional I/O with pull-up. Alt: PCINT0, CLKO (system clock output when CKOUT fuse programmed), ICP1 (Timer/Counter1 input capture)."
      },
      {
        "number": "13",
        "name": "PB1/PCINT1/OC1A",
        "type": "bidirectional",
        "description": "Port B bit 1, general-purpose bidirectional I/O with pull-up. Alt: PCINT1, OC1A (Timer/Counter1 output-compare A / PWM)."
      },
      {
        "number": "14",
        "name": "PB2/PCINT2/SS/OC1B",
        "type": "bidirectional",
        "description": "Port B bit 2, general-purpose I/O with pull-up. Alt: PCINT2, /SS (SPI slave-select, active low), OC1B (Timer1 output-compare B / PWM). Must be input for SPI master mode."
      },
      {
        "number": "15",
        "name": "PB3/PCINT3/OC2A/MOSI",
        "type": "bidirectional",
        "description": "Port B bit 3, general-purpose I/O with pull-up. Alt: PCINT3, OC2A (Timer2 output-compare A / PWM), MOSI (SPI master-out slave-in; also used for ISP serial programming)."
      },
      {
        "number": "16",
        "name": "PB4/PCINT4/MISO",
        "type": "bidirectional",
        "description": "Port B bit 4, general-purpose I/O with pull-up. Alt: PCINT4, MISO (SPI master-in slave-out; also used for ISP serial programming)."
      },
      {
        "number": "17",
        "name": "PB5/PCINT5/SCK",
        "type": "bidirectional",
        "description": "Port B bit 5, general-purpose I/O with pull-up. Alt: PCINT5, SCK (SPI serial clock; also used for ISP serial programming)."
      },
      {
        "number": "18",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply voltage for the ADC and PC3:0/ADC7:6. Must be within 0.3 V of VCC; connect to VCC through an LC filter when ADC is used."
      },
      {
        "number": "19",
        "name": "ADC6",
        "type": "input",
        "description": "Analog-only input, ADC channel 6 (10-bit). Available in TQFP/QFN packages only."
      },
      {
        "number": "20",
        "name": "AREF",
        "type": "passive",
        "description": "Analog reference input for the ADC. Decouple to GND (typ. 100 nF)."
      },
      {
        "number": "21",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V) reference (analog return)."
      },
      {
        "number": "22",
        "name": "ADC7",
        "type": "input",
        "description": "Analog-only input, ADC channel 7 (10-bit). Available in TQFP/QFN packages only."
      },
      {
        "number": "23",
        "name": "PC0/ADC0/PCINT8",
        "type": "bidirectional",
        "description": "Port C bit 0, general-purpose bidirectional I/O with pull-up. Alt: ADC0 (10-bit ADC channel 0), PCINT8."
      },
      {
        "number": "24",
        "name": "PC1/ADC1/PCINT9",
        "type": "bidirectional",
        "description": "Port C bit 1, general-purpose bidirectional I/O with pull-up. Alt: ADC1, PCINT9."
      },
      {
        "number": "25",
        "name": "PC2/ADC2/PCINT10",
        "type": "bidirectional",
        "description": "Port C bit 2, general-purpose bidirectional I/O with pull-up. Alt: ADC2, PCINT10."
      },
      {
        "number": "26",
        "name": "PC3/ADC3/PCINT11",
        "type": "bidirectional",
        "description": "Port C bit 3, general-purpose bidirectional I/O with pull-up. Alt: ADC3, PCINT11."
      },
      {
        "number": "27",
        "name": "PC4/ADC4/SDA/PCINT12",
        "type": "bidirectional",
        "description": "Port C bit 4, general-purpose I/O with pull-up. Alt: ADC4, SDA (2-wire/I2C serial data), PCINT12."
      },
      {
        "number": "28",
        "name": "PC5/ADC5/SCL/PCINT13",
        "type": "bidirectional",
        "description": "Port C bit 5, general-purpose I/O with pull-up. Alt: ADC5, SCL (2-wire/I2C serial clock), PCINT13."
      },
      {
        "number": "29",
        "name": "PC6/RESET/PCINT14",
        "type": "input",
        "description": "Active-low external reset input (needs pulse ≥ min pulse width). When RSTDISBL fuse is programmed, functions as PC6 general-purpose I/O with different electrical characteristics; also PCINT14."
      },
      {
        "number": "30",
        "name": "PD0/RXD/PCINT16",
        "type": "bidirectional",
        "description": "Port D bit 0, general-purpose bidirectional I/O with pull-up. Alt: RXD (USART receive data), PCINT16."
      },
      {
        "number": "31",
        "name": "PD1/TXD/PCINT17",
        "type": "bidirectional",
        "description": "Port D bit 1, general-purpose bidirectional I/O with pull-up. Alt: TXD (USART transmit data), PCINT17."
      },
      {
        "number": "32",
        "name": "PD2/INT0/PCINT18",
        "type": "bidirectional",
        "description": "Port D bit 2, general-purpose bidirectional I/O with pull-up. Alt: INT0 (external interrupt 0), PCINT18."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/245b65bf4de341d0bb9e6a5fd781e118.pdf",
        "pages": 26,
        "sha256": "a4fd7bf8176c39b1",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 32,
        "described": 32,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -4.175,
        -2.8
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "LQFP-32_7x7mm_P0.8mm@sha256:d3a8db080529cbea",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "atmega48pa-au.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9,
          9,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "be0e412f1c66fee70039b0e109e0cc7c823161dda97593718afa97569bc61ce3",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "atmega48pa-au-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9,
          9,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "75473a8f06fbc3eebcded1d745d039642bc7e3659c258e600b0163c930110694",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip",
      "Package": "TQFP-32(7x7)",
      "Category": "MCU",
      "Pins": "32"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "atmega48pa-au"
  ],
  "discovery_pitch": "ATMEGA48PA-AU (Microchip) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "atmega48pa-au.kicad_sym",
    "atmega48pa-au.kicad_mod",
    "atmega48pa-au.glb",
    "atmega48pa-au.step",
    "atmega48pa-au-etched.step",
    "atmega48pa-au.lbr",
    "docs/hero.png",
    "docs/atmega48pa-au-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:18:02.275Z"
}