RM1211ATS20A

{
  "schema_version": 1,
  "type": "component",
  "slug": "rm1211ats20a",
  "title": "RM1211ATS20A",
  "brief": "Realmagic Microcontroller Units (MCUs/MPUs/SOCs), TSSOP-20. 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",
    "rm1211ats20a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "RM1211ATS20A",
    "manufacturer": "Realmagic",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/3ddcfd0135b72fb178f8a694ef966e96.pdf",
    "parts": {
      "symbol": "rm1211ats20a.kicad_sym",
      "footprint": "rm1211ats20a.kicad_mod",
      "model_3d": "rm1211ats20a-hero.glb",
      "model_3d_plain": "rm1211ats20a-etched.glb",
      "model_3d_step": "rm1211ats20a-etched.step",
      "model_3d_step_plain": "rm1211ats20a.step",
      "lbr": "rm1211ats20a.lbr"
    },
    "distributor_links": {
      "lcsc": "C19269269"
    },
    "distributor_check": {
      "checked_at": "2026-10-26T18:34:51Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "2",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with ADC15, TK15 touch channel 15, XIN crystal input, A1O op-amp/comparator 1 output, T1PWM2N and T2PWM0 outputs."
      },
      {
        "number": "3",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with ADC14, TK14, XOUT crystal output, VREF internal reference output, RCOUT main clock output, T1PWM1 and UART TX."
      },
      {
        "number": "4",
        "name": "PB2",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with ADC13, TK13, RSTN external reset input, A2N op-amp/comparator 2 negative input, T1PWM2 and T2PWM1 outputs."
      },
      {
        "number": "5",
        "name": "PB3",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with ADC12, TK12, A3P op-amp/comparator 3 positive input, INT1 external interrupt 1 input, T1PWM1 and T1PWM0N outputs."
      },
      {
        "number": "6",
        "name": "PB4",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with ADC11, TK11, A3N op-amp/comparator 3 negative input, UART RX, T1 Timer1 count input and T1PWM0 output."
      },
      {
        "number": "7",
        "name": "PB5",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with ADC10, TK10, A3O op-amp/comparator 3 output, INT1 input, T1PWM0N, T1PWM1 and T1PWM2 outputs."
      },
      {
        "number": "8",
        "name": "PB6",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with ADC9, TK9, A2O op-amp/comparator 2 output, T1PWM1N and T2PWM1 outputs."
      },
      {
        "number": "9",
        "name": "PB7",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with ADC8, TK8, A2N op-amp/comparator 2 negative input, T0 Timer0 count input, T1PWM2N output and INT0 external interrupt 0 input."
      },
      {
        "number": "10",
        "name": "PC0",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with ADC16, TK16, A2P op-amp/comparator 2 positive input, VREF output, UART TX, T2PWM0 and T1PWM2 outputs."
      },
      {
        "number": "11",
        "name": "PC1",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with ADC17, TK17, A1P op-amp/comparator 1 positive input, RCOUT clock output, UART RX and T1PWM3 output."
      },
      {
        "number": "12",
        "name": "PA7",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with ADC7, TK7, A1N op-amp/comparator 1 negative input and T1PWM3N output."
      },
      {
        "number": "13",
        "name": "PA6",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with ADC6, TK6, A1O op-amp/comparator 1 output, T1PWM3 and T1PWM0 outputs."
      },
      {
        "number": "14",
        "name": "PA5",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with ADC5, TK5, A0O op-amp/comparator 0 output and T1PWM1N output."
      },
      {
        "number": "15",
        "name": "PA4",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with ADC4, TK4, A0N op-amp/comparator 0 negative input, VREF output, UART RX and T1PWM0N output."
      },
      {
        "number": "16",
        "name": "PA3",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with PDA serial programming/debug data I/O, ADC3, TK3, A0P op-amp/comparator 0 positive input, UART TX, T2PWM1 and T1PWM0 outputs."
      },
      {
        "number": "17",
        "name": "PA2",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with PCL serial programming/debug clock I/O, ADC2, TK2, A2P op-amp/comparator 2 positive input, T2PWM0 and T1PWM1N outputs."
      },
      {
        "number": "18",
        "name": "PA1",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with ADC1, TK1, VREF output, A1P op-amp/comparator 1 positive input, INT0 input, UART TX and T1PWM3 output."
      },
      {
        "number": "19",
        "name": "PA0",
        "type": "bidirectional",
        "description": "Bidirectional GPIO shared with ADC0, TK0, A1N op-amp/comparator 1 negative input, INT1 input, UART RX and T1PWM3N output."
      },
      {
        "number": "20",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply; datasheet operating range VDD = 1.8 to 5.5 V (absolute maximum -0.3 to +5.5 V)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet pin table gives only one 20-pin list, shared by SOP20 and TSSOP20. It does not print s; Pin types are inferred from the datasheet's 'I/O' and 'P' labels. Every GPIO is multiplexed with ana"
        ],
        "pages_sent": 45,
        "cost_usd": 0.2754,
        "at": "2026-10-26T18:34:20"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/3ddcfd0135b72fb178f8a694ef966e96.pdf",
        "pages": 130,
        "sha256": "80f14a0a206b3aa3",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "rm1211ats20a.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "rm1211ats20a-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07576746f01bb30b13a7b17ba31f1228332cc055763110cedaf8604197379acc",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Realmagic",
      "Package": "TSSOP-20",
      "Category": "Embedded Processors & Controllers",
      "Pins": "20"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "80f14a0a206b3aa34c0191a9e142cb30bdc96cd93d1c66b3e804fd8795593e6e",
      "rows": [
        {
          "name": "Supply voltage",
          "symbol": "VDD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 123,
          "source": "datasheet"
        },
        {
          "name": "I/O output current (single I/O)",
          "symbol": "IOH",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 25,
          "conditions": "Single I/O operating",
          "source_page": 123,
          "source": "datasheet"
        },
        {
          "name": "I/O output current (all I/O)",
          "symbol": "IOH",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 80,
          "conditions": "All I/O operating",
          "source_page": 123,
          "source": "datasheet"
        },
        {
          "name": "I/O input current (single I/O)",
          "symbol": "IOL",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "Single I/O operating",
          "source_page": 123,
          "source": "datasheet"
        },
        {
          "name": "I/O input current (all I/O)",
          "symbol": "IOL",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 80,
          "conditions": "All I/O operating",
          "source_page": 123,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 123,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 123,
          "source": "datasheet"
        },
        {
          "name": "Operating voltage",
          "symbol": "VDD",
          "kind": "electrical",
          "unit": "V",
          "min": 1.8,
          "typ": null,
          "max": 5.5,
          "conditions": "Oscillator frequency = 0.4-2MHz/2CLK",
          "source_page": 123,
          "source": "datasheet"
        },
        {
          "name": "Operating voltage",
          "symbol": "VDD",
          "kind": "electrical",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 5.5,
          "conditions": "Oscillator frequency = 0.4-8MHz/2CLK",
          "source_page": 123,
          "source": "datasheet"
        },
        {
          "name": "Operating voltage",
          "symbol": "VDD",
          "kind": "electrical",
          "unit": "V",
          "min": 4,
          "typ": null,
          "max": 5.5,
          "conditions": "Oscillator frequency = 0.4-16MHz/2CLK",
          "source_page": 123,
          "source": "datasheet"
        },
        {
          "name": "Input high voltage",
          "symbol": "VIH1",
          "kind": "electrical",
          "unit": "V",
          "min": 0.7,
          "typ": null,
          "max": null,
          "conditions": "3Eh,bit5=0, VDD = 1.8 to 5.5V; min printed 0.7VDD",
          "source_page": 123,
          "source": "datasheet"
        },
        {
          "name": "Input high voltage",
          "symbol": "VIH2",
          "kind": "electrical",
          "unit": "V",
          "min": 0.4,
          "typ": null,
          "max": null,
          "conditions": "3Eh,bit5=1, VDD = 1.8 to 5.5V; min printed 0.4VDD",
          "source_page": 123,
          "source": "datasheet"
        },
        {
          "name": "Input low voltage",
          "symbol": "VIL1",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "3Eh,bit5=0, VDD = 1.8 to 5.5V; max printed 0.3VDD",
          "source_page": 123,
          "source": "datasheet"
        },
        {
          "name": "Input low voltage",
          "symbol": "VIL2",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "3Eh,bit5=1, VDD = 1.8 to 5.5V; max printed 0.2VDD",
          "source_page": 123,
          "source": "datasheet"
        },
        {
          "name": "Output high voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 0.9,
          "typ": null,
          "max": null,
          "conditions": "IOH = -10mA P0, P1, VDD = 3.0 to 5.5V; min printed 0.9VDD",
          "source_page": 123,
          "source": "datasheet"
        },
        {
          "name": "Output low voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "IOL = 20mA P0, P1, VDD = 3.0 to 5.5V; max printed 0.1VDD",
          "source_page": 123,
          "source": "datasheet"
        },
        {
          "name": "Input high leakage current",
          "symbol": "ILIH1",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "All input ports, VIN = VDD",
          "source_page": 124,
          "source": "datasheet"
        },
        {
          "name": "Input low leakage current",
          "symbol": "ILIL1",
          "kind": "electrical",
          "unit": "uA",
          "min": -1,
          "typ": null,
          "max": null,
          "conditions": "All input ports, VIN = 0V",
          "source_page": 124,
          "source": "datasheet"
        },
        {
          "name": "Output high leakage current",
          "symbol": "ILOH",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "All output pins, VOUT = VDD",
          "source_page": 124,
          "source": "datasheet"
        },
        {
          "name": "Output low leakage current",
          "symbol": "ILOL",
          "kind": "electrical",
          "unit": "uA",
          "min": -2,
          "typ": null,
          "max": null,
          "conditions": "All output pins, VOUT = 0V",
          "source_page": 124,
          "source": "datasheet"
        },
        {
          "name": "Pull-up resistance",
          "symbol": "RP1",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 25,
          "typ": 50,
          "max": 100,
          "conditions": "VIN = 0V, VDD = 5V, TA = 25℃",
          "source_page": 124,
          "source": "datasheet"
        },
        {
          "name": "Pull-down resistance",
          "symbol": "RP2",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 25,
          "typ": 50,
          "max": 100,
          "conditions": "VIN = 0V, VDD = 5V, TA = 25℃",
          "source_page": 124,
          "source": "datasheet"
        },
        {
          "name": "Supply current, Run mode",
          "symbol": "IDD1",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 3.2,
          "max": 6,
          "conditions": "IRC 16MHz, 2CLK, VDD=5V, TA=25℃",
          "source_page": 124,
          "source": "datasheet"
        },
        {
          "name": "Supply current, Run mode",
          "symbol": "IDD1",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.1,
          "max": 2,
          "conditions": "Crystal 4MHz, 2CLK, VDD=5V, TA=25℃",
          "source_page": 124,
          "source": "datasheet"
        },
        {
          "name": "Supply current, Sleep mode",
          "symbol": "IDD3",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "VDD = 3.3V (LVR disabled), TA = 25℃",
          "source_page": 124,
          "source": "datasheet"
        },
        {
          "name": "Supply current, Sleep mode",
          "symbol": "IDD3",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "VDD = 3.3V (LVR enabled), TA = 25℃",
          "source_page": 124,
          "source": "datasheet"
        },
        {
          "name": "Supply current, Sleep mode",
          "symbol": "IDD3",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 1.2,
          "conditions": "VDD = 5V (LVR disabled), TA = 25℃",
          "source_page": 124,
          "source": "datasheet"
        },
        {
          "name": "Supply current, Sleep mode",
          "symbol": "IDD3",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 1.8,
          "conditions": "VDD = 5V (LVR enabled), TA = 25℃",
          "source_page": 124,
          "source": "datasheet"
        },
        {
          "name": "HIRC calibrated frequency accuracy",
          "symbol": "FHIRC",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "TA = 25 ℃, VDD = 5V",
          "source_page": 124,
          "source": "datasheet"
        },
        {
          "name": "HIRC calibrated frequency accuracy",
          "symbol": "FHIRC",
          "kind": "tolerance",
          "unit": "%",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "TA =-40~85℃, VDD=2.5V~5.5V",
          "source_page": 124,
          "source": "datasheet"
        },
        {
          "name": "HIRC center frequency",
          "symbol": "FHIRC",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": 16,
          "max": null,
          "conditions": "",
          "source_page": 124,
          "source": "datasheet"
        },
        {
          "name": "LIRC calibrated frequency accuracy",
          "symbol": "FLIRC",
          "kind": "tolerance",
          "unit": "%",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "TA = 25 ℃, VDD =2.5V~5.5V",
          "source_page": 125,
          "source": "datasheet"
        },
        {
          "name": "LIRC calibrated frequency accuracy",
          "symbol": "FLIRC",
          "kind": "tolerance",
          "unit": "%",
          "min": -40,
          "typ": null,
          "max": 40,
          "conditions": "TA =-40~85℃, VDD=2.5V~5.5V",
          "source_page": 125,
          "source": "datasheet"
        },
        {
          "name": "LIRC center frequency",
          "symbol": "FLIRC",
          "kind": "electrical",
          "unit": "KHz",
          "min": null,
          "typ": 128,
          "max": null,
          "conditions": "",
          "source_page": 125,
          "source": "datasheet"
        },
        {
          "name": "OPA supply voltage",
          "symbol": "VDD",
          "kind": "electrical",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 126,
          "source": "datasheet"
        },
        {
          "name": "OPA open-loop gain",
          "symbol": "AOL",
          "kind": "electrical",
          "unit": "dB",
          "min": 60,
          "typ": 90,
          "max": null,
          "conditions": "",
          "source_page": 127,
          "source": "datasheet"
        },
        {
          "name": "OPA power supply rejection ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 60,
          "typ": 80,
          "max": null,
          "conditions": "",
          "source_page": 127,
          "source": "datasheet"
        },
        {
          "name": "OPA common-mode rejection ratio",
          "symbol": "CMRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 60,
          "typ": 90,
          "max": null,
          "conditions": "",
          "source_page": 127,
          "source": "datasheet"
        },
        {
          "name": "Supply current, IDLE mode",
          "symbol": "IDD2",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 400,
          "max": null,
          "conditions": "IRC 16MHz, 2CLK, VDD=5V, TA=25℃",
          "source_page": 124,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "rm1211ats20a"
  ],
  "discovery_pitch": "RM1211ATS20A (Realmagic) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
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