TMS320F28021PTT

{
  "slug": "tms320f28021ptt",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "tms320f28021ptt",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tms320f28021ptt.kicad_sym",
    "tms320f28021ptt.kicad_mod",
    "tms320f28021ptt.glb",
    "tms320f28021ptt.step",
    "tms320f28021ptt.lbr",
    "docs/hero.png",
    "docs/tms320f28021ptt-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tms320f28021ptt-hero.glb",
    "tms320f28021ptt-hero.overlay.json"
  ],
  "component": {
    "mpn": "TMS320F28021PTT",
    "manufacturer": "Texas Instruments",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tms320f28023",
    "parts": {
      "symbol": "tms320f28021ptt.kicad_sym",
      "footprint": "tms320f28021ptt.kicad_mod",
      "model_3d": "tms320f28021ptt-hero.glb",
      "model_3d_plain": "tms320f28021ptt.glb",
      "model_3d_step": "tms320f28021ptt-etched.step",
      "model_3d_step_plain": "tms320f28021ptt.step",
      "lbr": "tms320f28021ptt.lbr"
    },
    "distributor_links": {
      "lcsc": "C571206",
      "digikey": "296-27291-ND",
      "mouser": "595-TMS320F28021PTT"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T18:49:37Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-27291-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-TMS320F28021PTT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GPIO29/SCITXDA/SCLA/TZ3",
        "type": "bidirectional",
        "description": "General-purpose I/O 29 with internal pull-up; alternate functions are SCI-A transmit, I2C-A clock (open-drain) and trip-zone 3 input, and inputs are not 5 V tolerant."
      },
      {
        "number": "2",
        "name": "TRST",
        "type": "input",
        "description": "JTAG test reset with internal pull-down; it must be held low during normal operation and an external pull-up (2.2 kΩ typical) is required on this pin."
      },
      {
        "number": "3",
        "name": "XRS",
        "type": "bidirectional",
        "description": "Device reset input and watchdog reset output, open-drain with internal pull-up; a 2.2 kΩ to 10 kΩ resistor is to be placed between XRS and VDDIO."
      },
      {
        "number": "4",
        "name": "ADCINA6/AIO6",
        "type": "passive",
        "description": "ADC group A channel 6 analog input, also available as digital AIO6 (AIO pins have no internal pull-up)."
      },
      {
        "number": "5",
        "name": "ADCINA4/COMP2A/AIO4",
        "type": "passive",
        "description": "ADC group A channel 4 analog input, also comparator 2A input (available on the 48-pin package only) and digital AIO4."
      },
      {
        "number": "6",
        "name": "ADCINA7",
        "type": "passive",
        "description": "ADC group A channel 7 analog input."
      },
      {
        "number": "7",
        "name": "ADCINA3",
        "type": "passive",
        "description": "ADC group A channel 3 analog input."
      },
      {
        "number": "8",
        "name": "ADCINA1",
        "type": "passive",
        "description": "ADC group A channel 1 analog input."
      },
      {
        "number": "9",
        "name": "ADCINA2/COMP1A/AIO2",
        "type": "passive",
        "description": "ADC group A channel 2 analog input, also comparator 1A input and digital AIO2."
      },
      {
        "number": "10",
        "name": "ADCINA0/VREFHI",
        "type": "passive",
        "description": "ADC group A channel 0 analog input; also the ADC external reference high input, used only in ADC external reference mode and not to exceed VDDA."
      },
      {
        "number": "11",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply pin; the datasheet recommends 2.97 V to 3.63 V (3.3 V nominal) and a 2.2 µF capacitor (typical) near this pin."
      },
      {
        "number": "12",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground pin, also the ADC low reference (VREFLO), which is always tied to ground."
      },
      {
        "number": "13",
        "name": "ADCINB1",
        "type": "passive",
        "description": "ADC group B channel 1 analog input."
      },
      {
        "number": "14",
        "name": "ADCINB2/COMP1B/AIO10",
        "type": "passive",
        "description": "ADC group B channel 2 analog input, also comparator 1B input and digital AIO10."
      },
      {
        "number": "15",
        "name": "ADCINB3",
        "type": "passive",
        "description": "ADC group B channel 3 analog input."
      },
      {
        "number": "16",
        "name": "ADCINB4/COMP2B/AIO12",
        "type": "passive",
        "description": "ADC group B channel 4 analog input, also comparator 2B input (48-pin package only) and digital AIO12."
      },
      {
        "number": "17",
        "name": "ADCINB6/AIO14",
        "type": "passive",
        "description": "ADC group B channel 6 analog input, also digital AIO14."
      },
      {
        "number": "18",
        "name": "ADCINB7",
        "type": "passive",
        "description": "ADC group B channel 7 analog input."
      },
      {
        "number": "19",
        "name": "GPIO34/COMP2OUT",
        "type": "bidirectional",
        "description": "General-purpose I/O 34 with internal pull-up; alternate function is the direct output of comparator 2 (48-pin package only)."
      },
      {
        "number": "20",
        "name": "GPIO35/TDI",
        "type": "bidirectional",
        "description": "General-purpose I/O 35 with internal pull-up; in JTAG mode it is the test data input, sampled on the rising edge of TCK."
      },
      {
        "number": "21",
        "name": "GPIO36/TMS",
        "type": "bidirectional",
        "description": "General-purpose I/O 36 with internal pull-up; in JTAG mode it is the test mode select input, sampled on the rising edge of TCK."
      },
      {
        "number": "22",
        "name": "GPIO37/TDO",
        "type": "bidirectional",
        "description": "General-purpose I/O 37; in JTAG mode it is the test data output (8 mA drive), shifted out on the falling edge of TCK."
      },
      {
        "number": "23",
        "name": "GPIO38/TCK/XCLKIN",
        "type": "bidirectional",
        "description": "General-purpose I/O 38 with internal pull-up; in JTAG mode it is the test clock input, and it is also the default external oscillator input (XCLKIN)."
      },
      {
        "number": "24",
        "name": "GPIO18/SPICLKA/SCITXDA/XCLKOUT",
        "type": "bidirectional",
        "description": "General-purpose I/O 18 with internal pull-up; alternate functions are SPI-A clock, SCI-A transmit and XCLKOUT (SYSCLKOUT-derived output clock, reset value SYSCLKOUT/4)."
      },
      {
        "number": "25",
        "name": "GPIO19/XCLKIN/SPISTEA/SCIRXDA/ECAP1",
        "type": "bidirectional",
        "description": "General-purpose I/O 19 with internal pull-up; alternate functions are external oscillator input XCLKIN, SPI-A slave transmit enable, SCI-A receive and eCAP1; GPIO19 is a power-up glitch source when the internal VREG is used."
      },
      {
        "number": "26",
        "name": "GPIO17/SPISOMIA/TZ3",
        "type": "bidirectional",
        "description": "General-purpose I/O 17 with internal pull-up; alternate functions are SPI-A slave output/master input and trip-zone 3 input; it is in Group 2 for output drive limits (-8 mA/8 mA)."
      },
      {
        "number": "27",
        "name": "GPIO16/SPISIMOA/TZ2",
        "type": "bidirectional",
        "description": "General-purpose I/O 16 with internal pull-up; alternate functions are SPI-A slave input/master output and trip-zone 2 input; it is in Group 2 for output drive limits (-8 mA/8 mA)."
      },
      {
        "number": "28",
        "name": "GPIO1/EPWM1B/COMP1OUT",
        "type": "bidirectional",
        "description": "General-purpose I/O 1 with internal pull-up; alternate functions are ePWM1 output B and the direct output of comparator 1."
      },
      {
        "number": "29",
        "name": "GPIO0/EPWM1A",
        "type": "bidirectional",
        "description": "General-purpose I/O 0 with pull-up disabled at reset (PWM pins have no pull-up at reset); alternate function is ePWM1 output A with HRPWM channel."
      },
      {
        "number": "30",
        "name": "TEST",
        "type": "bidirectional",
        "description": "Reserved for TI; this I/O pin must be left unconnected."
      },
      {
        "number": "31",
        "name": "GPIO32/SDAA/EPWMSYNCI/ADCSOCAO",
        "type": "bidirectional",
        "description": "General-purpose I/O 32; alternate functions are I2C-A data (open-drain), ePWM external sync input and ADC start-of-conversion A output."
      },
      {
        "number": "32",
        "name": "VDD",
        "type": "power_in",
        "description": "CPU and logic digital supply; when using the internal VREG, place a 1.2 µF capacitor (minimum) between each VDD pin and ground, and the recommended VDD supply is 1.71 V to 1.995 V when the VREG is disabled."
      },
      {
        "number": "33",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground pin."
      },
      {
        "number": "34",
        "name": "VREGENZ",
        "type": "input",
        "description": "Internal regulator enable with internal pull-down; tie to VSS to enable the internal 1.8 V VREG, or to VDDIO to disable it and use an external 1.8 V supply."
      },
      {
        "number": "35",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Digital I/O buffer and flash supply, recommended 2.97 V to 3.63 V (3.3 V nominal); a decoupling capacitor is to be placed on this pin."
      },
      {
        "number": "36",
        "name": "GPIO33/SCLA/EPWMSYNCO/ADCSOCBO",
        "type": "bidirectional",
        "description": "General-purpose I/O 33; alternate functions are I2C-A clock (open-drain), ePWM external sync output and ADC start-of-conversion B output."
      },
      {
        "number": "37",
        "name": "GPIO2/EPWM2A",
        "type": "bidirectional",
        "description": "General-purpose I/O 2 with pull-up disabled at reset; alternate function is ePWM2 output A with HRPWM channel."
      },
      {
        "number": "38",
        "name": "GPIO3/EPWM2B/COMP2OUT",
        "type": "bidirectional",
        "description": "General-purpose I/O 3 with pull-up disabled at reset; alternate functions are ePWM2 output B and comparator 2 direct output (48-pin package only)."
      },
      {
        "number": "39",
        "name": "GPIO4/EPWM3A",
        "type": "bidirectional",
        "description": "General-purpose I/O 4 with pull-up disabled at reset; alternate function is ePWM3 output A with HRPWM channel."
      },
      {
        "number": "40",
        "name": "GPIO5/EPWM3B/ECAP1",
        "type": "bidirectional",
        "description": "General-purpose I/O 5 with pull-up disabled at reset; alternate functions are ePWM3 output B and enhanced capture I/O 1."
      },
      {
        "number": "41",
        "name": "GPIO6/EPWM4A/EPWMSYNCI/EPWMSYNCO",
        "type": "bidirectional",
        "description": "General-purpose I/O 6 with pull-up disabled at reset; alternate functions are ePWM4 output A with HRPWM channel, external ePWM sync input and external ePWM sync output."
      },
      {
        "number": "42",
        "name": "GPIO7/EPWM4B/SCIRXDA",
        "type": "bidirectional",
        "description": "General-purpose I/O 7 with pull-up disabled at reset; alternate functions are ePWM4 output B and SCI-A receive data."
      },
      {
        "number": "43",
        "name": "VDD",
        "type": "power_in",
        "description": "CPU and logic digital supply; when using the internal VREG, place a 1.2 µF capacitor (minimum) between each VDD pin and ground."
      },
      {
        "number": "44",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground pin."
      },
      {
        "number": "45",
        "name": "X1",
        "type": "input",
        "description": "1.8 V on-chip crystal oscillator input; it must never receive 3.3 V signals and must be connected to GND if not used."
      },
      {
        "number": "46",
        "name": "X2",
        "type": "output",
        "description": "On-chip crystal oscillator output; a quartz crystal or ceramic resonator must be connected between X1 and X2, and X2 must be left unconnected if not used."
      },
      {
        "number": "47",
        "name": "GPIO12/TZ1/SCITXDA",
        "type": "bidirectional",
        "description": "General-purpose I/O 12 with internal pull-up; alternate functions are trip-zone 1 input and SCI-A transmit data."
      },
      {
        "number": "48",
        "name": "GPIO28/SCIRXDA/SDAA/TZ2",
        "type": "bidirectional",
        "description": "General-purpose I/O 28 with internal pull-up; alternate functions are SCI receive data, I2C-A data (open-drain) and trip-zone 2 input; it is in Group 2 for output drive limits (-8 mA/8 mA)."
      }
    ],
    "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 48-pin figure (Figure 7-1) text extraction is scrambled, so the pin-to-name mapping was built fr; Package variant confirmed: the ordering table lists TMS320F28021PTT as LQFP (PT), 48-pin, 250 per tr; Some pins have no direct KiCad class match and were mapped as follows: GPIO and XRS (I/OD, open-drai"
        ],
        "pages_sent": 85,
        "cost_usd": 0.5992,
        "at": "2026-10-11T18:49:14"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tms320f28023",
        "pages": 147,
        "sha256": "b90c388f4142c4b5",
        "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": [
      {
        "file": "tms320f28021ptt.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.0,
          9.0,
          1.5
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "9dea352d93177c2904afd7d7b68ea8855ce1ab691f69f8b3e13655600514b6bf",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tms320f28021ptt-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.0,
          9.0,
          1.5
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "43c928d297a57dd931f07b7f2bf9dec848c7ffcd77f6dec60e46f662e2053a7c",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}