CKS32F103CBT6

{
  "schema_version": 1,
  "type": "component",
  "slug": "cks32f103cbt6",
  "title": "CKS32F103CBT6",
  "brief": "CKS Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). 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",
    "cks32f103cbt6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CKS32F103CBT6",
    "manufacturer": "CKS",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757207341647847424",
    "parts": {
      "symbol": "cks32f103cbt6.kicad_sym",
      "footprint": "cks32f103cbt6.kicad_mod",
      "model_3d": "cks32f103cbt6-hero.glb",
      "model_3d_plain": "cks32f103cbt6-etched.glb",
      "model_3d_step": "cks32f103cbt6-etched.step",
      "model_3d_step_plain": "cks32f103cbt6.step",
      "lbr": "cks32f103cbt6.lbr"
    },
    "distributor_links": {
      "lcsc": "C556577"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T05:30:43Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup supply 1.8-3.6 V that powers the RTC, the external 32 kHz oscillator and the backup registers when VDD is off."
      },
      {
        "number": "2",
        "name": "PC13-TAMPER-RTC",
        "type": "bidirectional",
        "description": "GPIO PC13 (also TAMPER-RTC) fed through the supply switch limited to 3 mA; as an output it is limited to 2 MHz, 30 pF load, and cannot source current such as an LED."
      },
      {
        "number": "3",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "GPIO PC14 or LSE oscillator input OSC32_IN; as an output it is limited to 2 MHz, 30 pF load and no LED drive (3 mA supply switch limit)."
      },
      {
        "number": "4",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "GPIO PC15 or LSE oscillator output OSC32_OUT; as an output it is limited to 2 MHz, 30 pF load and no LED drive (3 mA supply switch limit)."
      },
      {
        "number": "5",
        "name": "OSC_IN",
        "type": "input",
        "description": "External high-speed oscillator input (4-16 MHz crystal/resonator, or 8 MHz external clock); after reset this pin is OSC_IN and can be reassigned by software to PD0."
      },
      {
        "number": "6",
        "name": "OSC_OUT",
        "type": "output",
        "description": "External high-speed oscillator output; after reset this pin is OSC_OUT and can be reassigned by software to PD1, where output mode is limited to 50 MHz."
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Active-low reset with internal pull-up (30-50 kΩ); input pulses shorter than 100 ns are filtered and pulses longer than 300 ns are not filtered."
      },
      {
        "number": "8",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground for ADC, reset block, RC oscillators and PLL; must be connected to VSS."
      },
      {
        "number": "9",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply 2.0-3.6 V for ADC, reset block, RC oscillators and PLL; ADC use requires at least 2.4 V and VDDA must be connected to VDD."
      },
      {
        "number": "10",
        "name": "PA0-WKUP",
        "type": "bidirectional",
        "description": "GPIO PA0 (standard I/O, not 5 V tolerant) with alternate functions WKUP, USART2_CTS, ADC12_IN0 and TIM2_CH1_ETR."
      },
      {
        "number": "11",
        "name": "PA1",
        "type": "bidirectional",
        "description": "GPIO PA1 (standard I/O) with alternate functions USART2_RTS, ADC12_IN1 and TIM2_CH2."
      },
      {
        "number": "12",
        "name": "PA2",
        "type": "bidirectional",
        "description": "GPIO PA2 (standard I/O) with alternate functions USART2_TX, ADC12_IN2 and TIM2_CH3."
      },
      {
        "number": "13",
        "name": "PA3",
        "type": "bidirectional",
        "description": "GPIO PA3 (standard I/O) with alternate functions USART2_RX, ADC12_IN3 and TIM2_CH4."
      },
      {
        "number": "14",
        "name": "PA4",
        "type": "bidirectional",
        "description": "GPIO PA4 (standard I/O) with alternate functions SPI1_NSS, USART2_CK and ADC12_IN4."
      },
      {
        "number": "15",
        "name": "PA5",
        "type": "bidirectional",
        "description": "GPIO PA5 (standard I/O) with alternate functions SPI1_SCK and ADC12_IN5."
      },
      {
        "number": "16",
        "name": "PA6",
        "type": "bidirectional",
        "description": "GPIO PA6 (standard I/O) with alternate functions SPI1_MISO, ADC12_IN6, TIM3_CH1 and TIM1_BKIN."
      },
      {
        "number": "17",
        "name": "PA7",
        "type": "bidirectional",
        "description": "GPIO PA7 (standard I/O) with alternate functions SPI1_MOSI, ADC12_IN7, TIM3_CH2 and the complementary timer channel printed as TIMI_CHIN."
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "GPIO PB0 (standard I/O) with alternate functions ADC12_IN8, TIM3_CH3 and TIM1_CH2N."
      },
      {
        "number": "19",
        "name": "PB1",
        "type": "bidirectional",
        "description": "GPIO PB1 (standard I/O) with alternate functions ADC12_IN9, TIM3_CH4 and TIM1_CH3N."
      },
      {
        "number": "20",
        "name": "PB2/BOOT1",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB2 that also serves as the BOOT1 boot-mode configuration pin."
      },
      {
        "number": "21",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB10 with alternate functions I2C2_SCL, USART3_TX and TIM2_CH3."
      },
      {
        "number": "22",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB11 with alternate functions I2C2_SDA, USART3_RX and TIM2_CH4."
      },
      {
        "number": "23",
        "name": "VSS_1",
        "type": "power_in",
        "description": "Digital ground pin (VSS) and voltage reference for all device voltages."
      },
      {
        "number": "24",
        "name": "VDD_1",
        "type": "power_in",
        "description": "Digital supply 2.0-3.6 V that powers the I/O pins and the internal regulator."
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB12 with alternate functions SPI2_NSS, I2C2_SMBAI, USART3_CK and TIM1_BKIN."
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB13 with alternate functions SPI2_SCK, USART3_CTS and TIM1_CH1N."
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB14 with alternate functions SPI2_MISO, USART3_RTS and TIM1_CH2N."
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB15 with alternate functions SPI2_MOSI and TIM1_CH3N."
      },
      {
        "number": "29",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PA8 with alternate functions USART1_CK, TIM1_CH1 and MCO."
      },
      {
        "number": "30",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PA9 with alternate functions USART1_TX and TIM1_CH2."
      },
      {
        "number": "31",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PA10 with alternate functions USART1_RX and TIM1_CH3."
      },
      {
        "number": "32",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PA11 with alternate functions USART1_CTS, USBDM, CANRX and TIM1_CH4."
      },
      {
        "number": "33",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PA12 with alternate functions USART1_RTS, USBDP, CANTX and TIM1_ETR."
      },
      {
        "number": "34",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V tolerant pin PA13 used as the JTMS/SWDIO serial-wire debug data line."
      },
      {
        "number": "35",
        "name": "VSS_2",
        "type": "power_in",
        "description": "Digital ground pin (VSS)."
      },
      {
        "number": "36",
        "name": "VDD_2",
        "type": "power_in",
        "description": "Digital supply 2.0-3.6 V that powers the I/O pins and the internal regulator."
      },
      {
        "number": "37",
        "name": "PA14",
        "type": "bidirectional",
        "description": "5 V tolerant pin PA14 used as the JTCK/SWCLK serial-wire debug clock."
      },
      {
        "number": "38",
        "name": "PA15",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PA15 that can also serve as JTDI, TIM2_CH1_ETR and SPI1_NSS (remapped)."
      },
      {
        "number": "39",
        "name": "PB3",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB3 that can also serve as JTDO/TRACESWO, TIM2_CH2 and SPI1_SCK."
      },
      {
        "number": "40",
        "name": "PB4",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB4 that can also serve as JNTRST, TIM3_CH1 and SPI1_MISO."
      },
      {
        "number": "41",
        "name": "PB5",
        "type": "bidirectional",
        "description": "GPIO PB5 with alternate functions I2C1_SMBAI, TIM3_CH2 and SPI1_MOSI."
      },
      {
        "number": "42",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB6 with alternate functions I2C1_SCL, TIM4_CH1 and USART1_TX."
      },
      {
        "number": "43",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB7 with alternate functions I2C1_SDA, TIM4_CH2 and USART1_RX."
      },
      {
        "number": "44",
        "name": "BOOT0",
        "type": "input",
        "description": "Boot mode selection input; the datasheet gives its input voltage range as 0 to 5.5 V."
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB8 with alternate functions TIM4_CH3, I2C1_SCL and CANRX."
      },
      {
        "number": "46",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB9 (printed as 'P89' in the datasheet) with alternate functions TIM4_CH4, I2C1_SDA and CANTX."
      },
      {
        "number": "47",
        "name": "VSS_3",
        "type": "power_in",
        "description": "Digital ground pin (VSS)."
      },
      {
        "number": "48",
        "name": "VDD_3",
        "type": "power_in",
        "description": "Digital supply 2.0-3.6 V that powers the I/O pins and the internal regulator."
      }
    ],
    "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: Datasheet table 2 prints this pin name as 'P89'; it is almost certainly PB9 (typo), so PB9 was used ; Alternate-function name printed as 'TIMI_CHIN' (likely TIM1_CH1N typo); the description keeps the pr; Pins default to OSC_IN/OSC_OUT after reset and can be remapped to PD0/PD1 by software (footnote 6); ",
          "1/48 pin names appear NOWHERE in the datasheet text: ['46:PB9@p21']"
        ],
        "pages_sent": 59,
        "cost_usd": 0.2581,
        "at": "2026-10-19T05:27:38"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757207341647847424",
        "pages": 64,
        "sha256": "221001e6207f4f99",
        "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": "cks32f103cbt6.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": "9dea352d93177c2904afd7d7b68ea8855ce1ab691f69f8b3e13655600514b6bf",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cks32f103cbt6-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": "ab5cad7769b5f60118b7c5957864ed3978fddc4d4f67e9fe8dbc1b26ca2a5a35",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "CKS",
      "Package": "LQFP-48(7x7)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "48"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "221001e6207f4f99fd460b63395ad480e30ad63f272b189ba963c3baf66c4992",
      "rows": [
        {
          "name": "Operating supply voltage (VDD, I/O)",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": 3.6,
          "conditions": "CPU frequency 72 MHz",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature (suffix 6)",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "Product suffix 6",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "USB transceiver startup time",
          "symbol": "tSTARTUP",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 50,
          "source": "datasheet"
        },
        {
          "name": "USB operating voltage",
          "symbol": "VDD",
          "kind": "electrical",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 51,
          "source": "datasheet"
        },
        {
          "name": "Differential input sensitivity",
          "symbol": "VDI",
          "kind": "electrical",
          "unit": "V",
          "min": 0.2,
          "typ": null,
          "max": null,
          "conditions": "I(USBDP,USBDM)",
          "source_page": 51,
          "source": "datasheet"
        },
        {
          "name": "Differential common mode range",
          "symbol": "VCM",
          "kind": "electrical",
          "unit": "V",
          "min": 0.8,
          "typ": null,
          "max": 2.5,
          "conditions": "Includes VDI range",
          "source_page": 51,
          "source": "datasheet"
        },
        {
          "name": "Single-ended receiver threshold",
          "symbol": "VSE",
          "kind": "electrical",
          "unit": "V",
          "min": 1.3,
          "typ": null,
          "max": 2,
          "conditions": "",
          "source_page": 51,
          "source": "datasheet"
        },
        {
          "name": "Static output low level",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "1.5kΩ RL to 3.6V",
          "source_page": 51,
          "source": "datasheet"
        },
        {
          "name": "Static output high level",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.8,
          "typ": null,
          "max": 3.6,
          "conditions": "15kΩ RL to VSS",
          "source_page": 51,
          "source": "datasheet"
        },
        {
          "name": "USB rise time",
          "symbol": "tr",
          "kind": "timing",
          "unit": "ns",
          "min": 4,
          "typ": null,
          "max": 20,
          "conditions": "CL ≤ 50pF",
          "source_page": 51,
          "source": "datasheet"
        },
        {
          "name": "USB fall time",
          "symbol": "tf",
          "kind": "timing",
          "unit": "ns",
          "min": 4,
          "typ": null,
          "max": 20,
          "conditions": "CL ≤ 50pF",
          "source_page": 51,
          "source": "datasheet"
        },
        {
          "name": "USB rise/fall time matching",
          "symbol": "trfm",
          "kind": "timing",
          "unit": "%",
          "min": 90,
          "typ": null,
          "max": 110,
          "conditions": "tr / tf",
          "source_page": 51,
          "source": "datasheet"
        },
        {
          "name": "Output signal crossover voltage",
          "symbol": "VCRS",
          "kind": "electrical",
          "unit": "V",
          "min": 1.3,
          "typ": null,
          "max": 2,
          "conditions": "",
          "source_page": 51,
          "source": "datasheet"
        },
        {
          "name": "ADC supply voltage",
          "symbol": "VDDA",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.4,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "ADC positive reference voltage",
          "symbol": "VREF+",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.4,
          "typ": null,
          "max": null,
          "conditions": "Max printed as VDDA",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "ADC input voltage current from VREF+",
          "symbol": "IVREF",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 160,
          "max": 220,
          "conditions": "",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "ADC clock frequency",
          "symbol": "fADC",
          "kind": "recommended_operating",
          "unit": "MHz",
          "min": 0.6,
          "typ": null,
          "max": 14,
          "conditions": "",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "ADC sampling rate",
          "symbol": "fS",
          "kind": "electrical",
          "unit": "MHz",
          "min": 0.05,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "External trigger frequency",
          "symbol": "fTRIG",
          "kind": "electrical",
          "unit": "kHz",
          "min": null,
          "typ": null,
          "max": 823,
          "conditions": "fADC=14MHz",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "External trigger frequency",
          "symbol": "fTRIG",
          "kind": "electrical",
          "unit": "1/fADC",
          "min": null,
          "typ": null,
          "max": 17,
          "conditions": "",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "External input impedance",
          "symbol": "RAIN",
          "kind": "electrical",
          "unit": "kΩ",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Sampling switch resistance",
          "symbol": "RADC",
          "kind": "electrical",
          "unit": "kΩ",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Internal sample and hold capacitance",
          "symbol": "CADC",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 8,
          "max": null,
          "conditions": "",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Sampling time",
          "symbol": "tS",
          "kind": "timing",
          "unit": "μs",
          "min": 0.107,
          "typ": null,
          "max": 17.1,
          "conditions": "fADC=14MHz",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Sampling time",
          "symbol": "tS",
          "kind": "timing",
          "unit": "1/fADC",
          "min": 1.5,
          "typ": null,
          "max": 239.5,
          "conditions": "",
          "source_page": 52,
          "source": "datasheet"
        },
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