STM8AF6223PCX

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm8af6223pcx",
  "title": "STM8AF6223PCX",
  "brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), TSSOP-20. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm8af6223pcx"
  ],
  "component": {
    "mpn": "STM8AF6223PCX",
    "manufacturer": "STMicroelectronics",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588883742228697088",
    "parts": {
      "symbol": "stm8af6223pcx.kicad_sym",
      "footprint": "stm8af6223pcx.kicad_mod",
      "model_3d": "stm8af6223pcx-etched.glb",
      "model_3d_plain": "stm8af6223pcx.glb",
      "model_3d_step": "stm8af6223pcx-etched.step",
      "model_3d_step_plain": "stm8af6223pcx.step",
      "lbr": "stm8af6223pcx.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "PD4/TIM5_CH1/BEEP/[LINUART_CK]",
        "type": "bidirectional",
        "description": "General-purpose I/O Port D4 (high-sink, O3 speed, floating/pull-up input, OD/PP output). Default alternate: TIM5_CH1 or BEEP output; remap [AFR2] gives LINUART clock."
      },
      {
        "number": "2",
        "name": "PD5/AIN5/LINUART_TX",
        "type": "bidirectional",
        "description": "General-purpose I/O Port D5 (high-sink, O3 speed). Default alternate functions: analog input AIN5 for the 10-bit ADC and LINUART data transmit (TX)."
      },
      {
        "number": "3",
        "name": "PD6/AIN6/LINUART_RX",
        "type": "bidirectional",
        "description": "General-purpose I/O Port D6 (high-sink, O3 speed). Default alternate functions: analog input AIN6 for the 10-bit ADC and LINUART data receive (RX)."
      },
      {
        "number": "4",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Active-low bidirectional reset pin with internal pull-up. Drive low externally to reset the MCU; internally driven low by watchdog/POR events. Requires filtering per Figure 35 recommended reset protection."
      },
      {
        "number": "5",
        "name": "PA1/OSCIN",
        "type": "bidirectional",
        "description": "General-purpose I/O Port A1 or HSE crystal/resonator oscillator input (OSCIN). Slow output speed (O1). In Halt/Active-halt PA1 is auto-configured as input weak pull-up and cannot wake the device."
      },
      {
        "number": "6",
        "name": "PA2/OSCOUT",
        "type": "bidirectional",
        "description": "General-purpose I/O Port A2 or HSE crystal/resonator oscillator output (OSCOUT). Slow output speed (O1)."
      },
      {
        "number": "7",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground reference (0 V). Connect to the system ground plane with low-impedance return."
      },
      {
        "number": "8",
        "name": "VCAP",
        "type": "passive",
        "description": "Internal 1.8 V core regulator output stabilization pin. Requires an external decoupling capacitor to VSS (typ. 1 uF ceramic) - do not connect to any supply rail."
      },
      {
        "number": "9",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital power supply, 3.0 V to 5.5 V operating range. Decouple to VSS with 100 nF (plus bulk capacitance) close to the pin."
      },
      {
        "number": "10",
        "name": "PA3/TIM5_CH3/[SPI_NSS]",
        "type": "bidirectional",
        "description": "General-purpose I/O Port A3 (high-sink, O3 speed). Default alternate: TIM5 channel 3; remap [AFR1] gives SPI slave-select NSS."
      },
      {
        "number": "11",
        "name": "PB5/I2C_SDA/[TIM1_BKIN]",
        "type": "bidirectional",
        "description": "Port B5 configured as true open-drain I/O (no P-buffer, no weak pull-up, no protection diode to VDD). Default alternate: I2C data (SDA); remap [AFR4] gives TIM1 break input."
      },
      {
        "number": "12",
        "name": "PB4/I2C_SCL/[ADC_ETR]",
        "type": "bidirectional",
        "description": "Port B4 configured as true open-drain I/O. Default alternate: I2C clock (SCL); remap [AFR4] gives ADC external trigger."
      },
      {
        "number": "13",
        "name": "PC3/TIM1_CH3/[TLI]/[TIM1_CH1N]",
        "type": "bidirectional",
        "description": "General-purpose I/O Port C3 (high-sink, O3 speed). Default alternate: TIM1 channel 3; remap [AFR3] gives TLI (top-level interrupt); remap [AFR7] gives TIM1 inverted channel 1."
      },
      {
        "number": "14",
        "name": "PC4/TIM1_CH4/CLK_CCO/AIN2/[TIM1_CH2N]",
        "type": "bidirectional",
        "description": "General-purpose I/O Port C4 (high-sink, O3 speed). Default alternates: TIM1 channel 4 or configurable clock output (CCO); remap [AFR2] gives ADC analog input AIN2; remap [AFR7] gives TIM1 inverted channel 2."
      },
      {
        "number": "15",
        "name": "PC5/SPI_SCK/[TIM5_CH1]",
        "type": "bidirectional",
        "description": "Port C5 (high-sink, O3 speed). Default alternate: SPI clock (SCK); remap [AFR0] gives TIM5 channel 1."
      },
      {
        "number": "16",
        "name": "PC6/SPI_MOSI/[TIM1_CH1]",
        "type": "bidirectional",
        "description": "Port C6 (high-sink, O3 speed). Default alternate: SPI MOSI (master-out/slave-in); remap [AFR0] gives TIM1 channel 1."
      },
      {
        "number": "17",
        "name": "PC7/SPI_MISO/[TIM1_CH2]",
        "type": "bidirectional",
        "description": "Port C7 (high-sink, O3 speed). Default alternate: SPI MISO (master-in/slave-out); remap [AFR0] gives TIM1 channel 2."
      },
      {
        "number": "18",
        "name": "PD1/SWIM",
        "type": "bidirectional",
        "description": "Port D1 (high-sink, O4 fast-default speed) doubling as the SWIM single-wire debug/programming data interface. PD1 is input pull-up during the reset phase and after internal reset release."
      },
      {
        "number": "19",
        "name": "PD2/AIN3/[TIM5_CH3]",
        "type": "bidirectional",
        "description": "General-purpose I/O Port D2 (high-sink, O3 speed). Remap [AFR2] gives ADC analog input AIN3; remap [AFR1] gives TIM5 channel 3."
      },
      {
        "number": "20",
        "name": "PD3/AIN4/TIM5_CH2/ADC_ETR",
        "type": "bidirectional",
        "description": "General-purpose I/O Port D3 (high-sink, O3 speed). Default alternate: analog input AIN4 / TIM5 channel 2 / ADC external trigger."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588883742228697088",
        "pages": 110,
        "sha256": "ffb367d8b93062e4",
        "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": [
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        "file": "stm8af6223pcx.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": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
        "checked": "2026-10-07",
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        "zmin_mm": -0.0,
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        "sha256": "caaf014317db9b4b54034a302242c2bab2705115962188f7d006fe5ab4f602ab",
        "checked": "2026-10-07",
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      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "TSSOP-20",
      "Category": "Embedded Processors & Controllers",
      "Pins": "20"
    }
  },
  "variants": [
    {
      "mpn": "STM8AF6223PCX",
      "kind": "packaging"
    },
    {
      "mpn": "STM8AF6223PCXPCY",
      "kind": "packaging"
    },
    {
      "mpn": "STM8AF6223PCXPCU",
      "kind": "packaging"
    },
    {
      "mpn": "STM8AF6223PCXPAX",
      "kind": "packaging"
    },
    {
      "mpn": "STM8AF6223PCXPAY",
      "kind": "packaging"
    },
    {
      "mpn": "STM8AF6223PCXPAU",
      "kind": "packaging"
    },
    {
      "mpn": "STM8AF6223PCXPDX",
      "kind": "packaging"
    },
    {
      "mpn": "STM8AF6223PCXPDY",
      "kind": "packaging"
    },
    {
      "mpn": "STM8AF6223PCXPDU",
      "kind": "packaging"
    }
  ],
  "sections": [
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  "discovery_pitch": "STM8AF6223PCX (STMicroelectronics) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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  "files": [
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    "README.md",
    "stm8af6223pcx.kicad_sym",
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    "stm8af6223pcx.step",
    "stm8af6223pcx.lbr",
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  "visibility": {
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  "updated_at": "2026-09-25T08:58:58.641Z"
}