STM32F091CBT6

{
  "slug": "stm32f091cbt6",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm32f091cbt6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "stm32f091cbt6.kicad_sym",
    "stm32f091cbt6.kicad_mod",
    "stm32f091cbt6.glb",
    "stm32f091cbt6.step",
    "stm32f091cbt6.lbr",
    "docs/hero.png",
    "docs/stm32f091cbt6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "stm32f091cbt6-hero.glb",
    "stm32f091cbt6-hero.overlay.json"
  ],
  "component": {
    "mpn": "STM32F091CBT6",
    "manufacturer": "STMicroelectronics",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586180197104566272",
    "parts": {
      "symbol": "stm32f091cbt6.kicad_sym",
      "footprint": "stm32f091cbt6.kicad_mod",
      "model_3d": "stm32f091cbt6-hero.glb",
      "model_3d_plain": "stm32f091cbt6.glb",
      "model_3d_step": "stm32f091cbt6-etched.step",
      "model_3d_step_plain": "stm32f091cbt6.step",
      "lbr": "stm32f091cbt6.lbr"
    },
    "distributor_links": {
      "lcsc": "C88448",
      "digikey": "497-17364-ND",
      "mouser": "511-STM32F091CBT6"
    },
    "distributor_check": {
      "checked_at": "2026-10-05T22:11:56Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-17364-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32F091CBT6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup power supply for RTC, 32 kHz oscillator and backup registers, 1.65 to 3.6 V when VDD is not present."
      },
      {
        "number": "2",
        "name": "PC13",
        "type": "bidirectional",
        "description": "TC I/O supplied through the power switch (output limited to 2 MHz, 30 pF, no LED drive); additional functions WKUP2, RTC_TAMP1, RTC_TS, RTC_OUT."
      },
      {
        "number": "3",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "TC I/O supplied through the power switch (output limited to 2 MHz, 30 pF); additional function OSC32_IN for the 32 kHz crystal."
      },
      {
        "number": "4",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "TC I/O supplied through the power switch (output limited to 2 MHz, 30 pF); additional function OSC32_OUT for the 32 kHz crystal."
      },
      {
        "number": "5",
        "name": "PF0-OSC_IN",
        "type": "bidirectional",
        "description": "5 V-tolerant FM+ capable I/O with CRS_SYNC and I2C1_SDA alternate functions; OSC_IN for the main oscillator."
      },
      {
        "number": "6",
        "name": "PF1-OSC_OUT",
        "type": "bidirectional",
        "description": "5 V-tolerant FM+ capable I/O with I2C1_SCL alternate function; OSC_OUT for the main oscillator."
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Device reset input / internal reset output, active low, with embedded weak pull-up resistor."
      },
      {
        "number": "8",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "9",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog power supply from VDD to 3.6 V (minimum 2.4 V when ADC or DAC used), must be >= VDD and established first."
      },
      {
        "number": "10",
        "name": "PA0",
        "type": "bidirectional",
        "description": "TTa I/O with USART2_CTS, TIM2_CH1_ETR, TSC_G1_IO1, USART4_TX, COMP1_OUT; additional RTC_TAMP2, WKUP1, ADC_IN0, COMP1_INM6."
      },
      {
        "number": "11",
        "name": "PA1",
        "type": "bidirectional",
        "description": "TTa I/O with USART2_RTS, TIM2_CH2, TIM15_CH1N, TSC_G1_IO2, USART4_RX, EVENTOUT; additional ADC_IN1, COMP1_INP."
      },
      {
        "number": "12",
        "name": "PA2",
        "type": "bidirectional",
        "description": "TTa I/O with USART2_TX, TIM2_CH3, TIM15_CH1, TSC_G1_IO3, COMP2_OUT; additional ADC_IN2, WKUP4, COMP2_INM6."
      },
      {
        "number": "13",
        "name": "PA3",
        "type": "bidirectional",
        "description": "TTa I/O with USART2_RX, TIM2_CH4, TIM15_CH2, TSC_G1_IO4; additional ADC_IN3, COMP2_INP."
      },
      {
        "number": "14",
        "name": "PA4",
        "type": "bidirectional",
        "description": "TTa I/O with SPI1_NSS, I2S1_WS, TIM14_CH1, TSC_G2_IO1, USART2_CK, USART6_TX; additional COMP1_INM4, COMP2_INM4, ADC_IN4, DAC_OUT1."
      },
      {
        "number": "15",
        "name": "PA5",
        "type": "bidirectional",
        "description": "TTa I/O with SPI1_SCK, I2S1_CK, CEC, TIM2_CH1_ETR, TSC_G2_IO2, USART6_RX; additional COMP1_INM5, COMP2_INM5, ADC_IN5, DAC_OUT2."
      },
      {
        "number": "16",
        "name": "PA6",
        "type": "bidirectional",
        "description": "TTa I/O with SPI1_MISO, I2S1_MCK, TIM3_CH1, TIM1_BKIN, TIM16_CH1, COMP1_OUT, TSC_G2_IO3, USART3_CTS; additional ADC_IN6."
      },
      {
        "number": "17",
        "name": "PA7",
        "type": "bidirectional",
        "description": "TTa I/O with SPI1_MOSI, I2S1_SD, TIM3_CH2, TIM14_CH1, TIM1_CH1N, TIM17_CH1, COMP2_OUT, TSC_G2_IO4; additional ADC_IN7."
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "TTa I/O with TIM3_CH3, TIM1_CH2N, TSC_G3_IO2, EVENTOUT, USART3_CK; additional ADC_IN8."
      },
      {
        "number": "19",
        "name": "PB1",
        "type": "bidirectional",
        "description": "TTa I/O with TIM3_CH4, USART3_RTS, TIM14_CH1, TIM1_CH3N, TSC_G3_IO3; additional ADC_IN9."
      },
      {
        "number": "20",
        "name": "PB2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with TSC_G3_IO4 alternate function."
      },
      {
        "number": "21",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V-tolerant FM+ capable I/O with SPI2_SCK, I2S2_CK, I2C2_SCL, USART3_TX, CEC, TSC_SYNC, TIM2_CH3."
      },
      {
        "number": "22",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V-tolerant FM+ capable I/O with USART3_RX, TIM2_CH4, EVENTOUT, TSC_G6_IO1, I2C2_SDA."
      },
      {
        "number": "23",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "24",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital power supply, 2.0 to 3.6 V."
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with TIM1_BKIN, TIM15_BKIN, SPI2_NSS, I2S2_WS, USART3_CK, TSC_G6_IO2, EVENTOUT."
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V-tolerant FM+ capable I/O with SPI2_SCK, I2S2_CK, I2C2_SCL, USART3_CTS, TIM1_CH1N, TSC_G6_IO3."
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V-tolerant FM+ capable I/O with SPI2_MISO, I2S2_MCK, I2C2_SDA, USART3_RTS, TIM1_CH2N, TIM15_CH1, TSC_G6_IO4."
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with SPI2_MOSI, I2S2_SD, TIM1_CH3N, TIM15_CH1N, TIM15_CH2; additional WKUP7, RTC_REFIN."
      },
      {
        "number": "29",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied by VDDIO2 with USART1_CK, TIM1_CH1, EVENTOUT, MCO, CRS_SYNC."
      },
      {
        "number": "30",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied by VDDIO2 with USART1_TX, TIM1_CH2, TIM15_BKIN, MCO, TSC_G4_IO1, I2C1_SCL."
      },
      {
        "number": "31",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied by VDDIO2 with USART1_RX, TIM1_CH3, TIM17_BKIN, TSC_G4_IO2, I2C1_SDA."
      },
      {
        "number": "32",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied by VDDIO2 with CAN_RX, USART1_CTS, TIM1_CH4, COMP1_OUT, TSC_G4_IO3, EVENTOUT, I2C2_SCL."
      },
      {
        "number": "33",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied by VDDIO2 with CAN_TX, USART1_RTS, TIM1_ETR, COMP2_OUT, TSC_G4_IO4, EVENTOUT, I2C2_SDA."
      },
      {
        "number": "34",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied by VDDIO2, SWDIO after reset with internal pull-up activated; alternate IR_OUT."
      },
      {
        "number": "35",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "36",
        "name": "VDDIO2",
        "type": "power_in",
        "description": "Digital power supply for the VDDIO2-supplied I/Os, 1.65 to 3.6 V, independent of VDD but not to be provided without valid VDD."
      },
      {
        "number": "37",
        "name": "PA14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied by VDDIO2, SWCLK after reset with internal pull-down activated; alternate USART2_TX."
      },
      {
        "number": "38",
        "name": "PA15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied by VDDIO2 with SPI1_NSS, I2S1_WS, USART2_RX, USART4_RTS, TIM2_CH1_ETR, EVENTOUT."
      },
      {
        "number": "39",
        "name": "PB3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with SPI1_SCK, I2S1_CK, TIM2_CH2, TSC_G5_IO1, EVENTOUT, USART5_TX."
      },
      {
        "number": "40",
        "name": "PB4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with SPI1_MISO, I2S1_MCK, TIM17_BKIN, TIM3_CH1, TSC_G5_IO2, EVENTOUT, USART5_RX."
      },
      {
        "number": "41",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with SPI1_MOSI, I2S1_SD, I2C1_SMBA, TIM16_BKIN, TIM3_CH2, USART5_CK_RTS; additional WKUP6."
      },
      {
        "number": "42",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V-tolerant FM+ capable I/O with I2C1_SCL, USART1_TX, TIM16_CH1N, TSC_G5_IO3."
      },
      {
        "number": "43",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V-tolerant FM+ capable I/O with I2C1_SDA, USART1_RX, USART4_CTS, TIM17_CH1N, TSC_G5_IO4."
      },
      {
        "number": "44",
        "name": "PF11-BOOT0",
        "type": "input",
        "description": "5 V-tolerant boot memory selection pin (BOOT0), shared with GPIO PF11."
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V-tolerant FM+ capable I/O with I2C1_SCL, CEC, TIM16_CH1, TSC_SYNC, CAN_RX."
      },
      {
        "number": "46",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V-tolerant FM+ capable I/O with SPI2_NSS, I2S2_WS, I2C1_SDA, IR_OUT, TIM17_CH1, EVENTOUT, CAN_TX."
      },
      {
        "number": "47",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "48",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital power supply, 2.0 to 3.6 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pins 2-6 are not listed in Table 13 for LQFP48 package, marked as unconnected/NC (No Connect). The m; Multiple ground (VSS) and power (VDD) pins exist in the package at pins 23-24 (VSS/VDD pair) and 35,; Pins 29-34 and 37-38 are supplied from VDDIO2 rail (independent 1.65-3.6 V supply) rather than main "
        ],
        "pages_sent": 63,
        "cost_usd": 0.4781,
        "at": "2026-10-05T22:11:33"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586180197104566272",
        "pages": 127,
        "sha256": "ec727c55a4fad92b",
        "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"
    }
  }
}