STM32WB55CEU6

{
  "slug": "stm32wb55ceu6",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm32wb55ceu6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "stm32wb55ceu6.kicad_sym",
    "stm32wb55ceu6.kicad_mod",
    "stm32wb55ceu6.glb",
    "stm32wb55ceu6.step",
    "stm32wb55ceu6.lbr",
    "docs/hero.png",
    "docs/stm32wb55ceu6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "stm32wb55ceu6-hero.glb",
    "stm32wb55ceu6-hero.overlay.json"
  ],
  "component": {
    "mpn": "STM32WB55CEU6",
    "manufacturer": "STMicroelectronics",
    "package": "UFQFPN-48(7x7)",
    "pin_count": 49,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588886723929509888",
    "parts": {
      "symbol": "stm32wb55ceu6.kicad_sym",
      "footprint": "stm32wb55ceu6.kicad_mod",
      "model_3d": "stm32wb55ceu6-hero.glb",
      "model_3d_plain": "stm32wb55ceu6.glb",
      "model_3d_step": "stm32wb55ceu6-etched.step",
      "model_3d_step_plain": "stm32wb55ceu6.step",
      "lbr": "stm32wb55ceu6.lbr"
    },
    "distributor_links": {
      "lcsc": "C911135",
      "digikey": "497-18490-ND",
      "mouser": "511-STM32WB55CEU6"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T02:52:14Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-18490-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "511-STM32WB55CEU6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup-domain supply for the RTC, LSE and backup registers, powered from a battery or supercapacitor or from VDD when neither is present, with a backup operating voltage of 1.55 to 3.6 V."
      },
      {
        "number": "2",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "5 V-tolerant FT I/O fed through the power switch, which sinks at most 3 mA, so output speed must not exceed 2 MHz at a 30 pF maximum load and the pin must not drive current sources; alternate function is OSC32_IN (LSE input)."
      },
      {
        "number": "3",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "5 V-tolerant FT I/O fed through the power switch, which sinks at most 3 mA, so output speed must not exceed 2 MHz at a 30 pF maximum load and the pin must not drive current sources; alternate function is OSC32_OUT (LSE output)."
      },
      {
        "number": "4",
        "name": "PH3-BOOT0",
        "type": "bidirectional",
        "description": "5 V-tolerant FT I/O that carries the BOOT0 function and can also output the LSCO low-speed clock, which is available in Run and Stop modes."
      },
      {
        "number": "5",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_fl I/O that is Fm+ capable with 20 mA output drive and has its LCD function supplied by VLCD; alternate functions include I2C1_SCL, TIM1_CH2N, QUADSPI_BK1_IO1 and LCD_SEG16."
      },
      {
        "number": "6",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_fla I/O that is Fm+ capable with 20 mA output drive, has LCD function supplied by VLCD and analog-switch function supplied by VDDA; alternate functions include I2C1_SDA, SPI2_NSS, IR_OUT, QUADSPI_BK1_IO0 and TIM17_CH1."
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Bidirectional reset pin with a weak pull-up resistor; the internal reset pull-up is deactivated when the reset source is internal."
      },
      {
        "number": "8",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply for the ADC, comparators and voltage reference buffer, specified at 1.62 to 3.6 V for ADC/COMP and at 2.4 V minimum when VREFBUF is used; on UFQFPN48 it is internally connected to VREF+ and must be connected to VDD when unused."
      },
      {
        "number": "9",
        "name": "PA0",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_a I/O with analog-switch function supplied by VDDA; alternate functions include TIM2_CH1, COMP1_OUT, SAI1_EXTCLK and TIM2_ETR, and additional functions are COMP1_INM, ADC1_IN5 and RTC_TAMP2/WKUP1."
      },
      {
        "number": "10",
        "name": "PA1",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_la I/O with LCD function supplied by VLCD and analog-switch function supplied by VDDA; alternate functions include TIM2_CH2, I2C1_SMBA, SPI1_SCK and LCD_SEG0, and additional functions are COMP1_INP and ADC1_IN6."
      },
      {
        "number": "11",
        "name": "PA2",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_la I/O with LCD function supplied by VLCD and analog-switch function supplied by VDDA; alternate functions include LSCO, TIM2_CH3, LPUART1_TX, QUADSPI_BK1_NCS and COMP2_OUT, and additional functions are COMP2_INM, ADC1_IN7 and WKUP4; LSCO on this pin is available in Standby and Shutdown modes."
      },
      {
        "number": "12",
        "name": "PA3",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_la I/O with LCD function supplied by VLCD and analog-switch function supplied by VDDA; alternate functions include TIM2_CH4, SAI1_PDM_CK1, LPUART1_RX, QUADSPI_CLK and SAI1_MCLK_A, and additional functions are COMP2_INP and ADC1_IN8."
      },
      {
        "number": "13",
        "name": "PA4",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_a I/O with analog-switch function supplied by VDDA; alternate functions include SPI1_NSS, SAI1_FS_B, LPTIM2_OUT and LCD_SEG5, and additional functions are COMP1_INM, COMP2_INM and ADC1_IN9."
      },
      {
        "number": "14",
        "name": "PA5",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_a I/O with analog-switch function supplied by VDDA; alternate functions include TIM2_CH1, TIM2_ETR, SPI1_SCK, LPTIM2_ETR and SAI1_SD_B, and additional functions are COMP1_INM, COMP2_INM and ADC1_IN10."
      },
      {
        "number": "15",
        "name": "PA6",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_la I/O with LCD function supplied by VLCD and analog-switch function supplied by VDDA; alternate functions include TIM1_BKIN, SPI1_MISO, LPUART1_CTS, QUADSPI_BK1_IO3, LCD_SEG3 and TIM16_CH1, and an additional function is ADC1_IN11."
      },
      {
        "number": "16",
        "name": "PA7",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_fla I/O that is Fm+ capable with LCD and analog-switch functions; alternate functions include TIM1_CH1N, I2C3_SCL, SPI1_MOSI, QUADSPI_BK1_IO2, LCD_SEG4, COMP2_OUT and TIM17_CH1, and an additional function is ADC1_IN12."
      },
      {
        "number": "17",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_la I/O with LCD function supplied by VLCD and analog-switch function supplied by VDDA; alternate functions include MCO, TIM1_CH1, SAI1_PDM_CK2, USART1_CK, LCD_COM0 and LPTIM2_OUT, and an additional function is ADC1_IN15."
      },
      {
        "number": "18",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_fla I/O that is Fm+ capable with LCD and analog-switch functions; alternate functions include TIM1_CH2, SAI1_PDM_DI2, I2C1_SCL, SPI2_SCK, USART1_TX, LCD_COM1 and SAI1_FS_A, and additional functions are COMP1_INM and ADC1_IN16."
      },
      {
        "number": "19",
        "name": "PB2",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_a I/O with analog-switch function supplied by VDDA; alternate functions include RTC_OUT, LPTIM1_OUT, I2C3_SMBA, SPI1_NSS, LCD_VLCD and SAI1_EXTCLK, and an additional function is COMP1_INP."
      },
      {
        "number": "20",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply pin for the I/Os, internal regulator and system functions (RF, SMPS, reset, power management, internal clocks), specified at 1.71 to 3.6 V; VDD, VDDRF and VDDSMPS must be wired together."
      },
      {
        "number": "21",
        "name": "RF1",
        "type": "bidirectional",
        "description": "RF input/output that must be connected to the antenna through a low-pass matching network, using the nominal PCB layout."
      },
      {
        "number": "22",
        "name": "VSSRF",
        "type": "power_in",
        "description": "RF ground pin that must be connected to GND, and the exposed pad must be connected to the GND plane for correct RF operation."
      },
      {
        "number": "23",
        "name": "VDDRF",
        "type": "power_in",
        "description": "Dedicated RF supply that must be connected to VDD, with a minimum RF voltage of 1.71 V and maximum of 3.6 V."
      },
      {
        "number": "24",
        "name": "OSC_OUT",
        "type": "output",
        "description": "Output of the 32 MHz main oscillator, also used as the HSE source, to be laid out per the nominal reference design (AN5165)."
      },
      {
        "number": "25",
        "name": "OSC_IN",
        "type": "input",
        "description": "Input of the 32 MHz main oscillator, also used as the HSE source, to be laid out per the nominal reference design (AN5165)."
      },
      {
        "number": "26",
        "name": "AT0",
        "type": "output",
        "description": "Reserved pin that must be kept unconnected."
      },
      {
        "number": "27",
        "name": "AT1",
        "type": "output",
        "description": "Reserved pin that must be kept unconnected."
      },
      {
        "number": "28",
        "name": "PB0",
        "type": "bidirectional",
        "description": "3.6 V-tolerant TT I/O with alternate functions COMP1_OUT and RF_TX_MOD_EXT_PA (external PA transmit control); output speed should be set to 00 during RF operation because frequencies above 32 kHz may affect RF performance, and injected current is limited to -5/0 mA."
      },
      {
        "number": "29",
        "name": "PB1",
        "type": "bidirectional",
        "description": "3.6 V-tolerant TT I/O with alternate functions LPUART1_RTS_DE and LPTIM2_IN1; output speed should be set to 00 during RF operation because frequencies above 32 kHz may affect RF performance, and injected current is limited to -5/0 mA."
      },
      {
        "number": "30",
        "name": "PE4",
        "type": "bidirectional",
        "description": "5 V-tolerant FT I/O with CM4_EVENTOUT as its only listed alternate function."
      },
      {
        "number": "31",
        "name": "VFBSMPS",
        "type": "power_in",
        "description": "SMPS feedback voltage input, specified at 1.4 to 3.6 V."
      },
      {
        "number": "32",
        "name": "VSSSMPS",
        "type": "power_in",
        "description": "Ground pin for the SMPS step-down converter."
      },
      {
        "number": "33",
        "name": "VLXSMPS",
        "type": "power_out",
        "description": "SMPS switching node that connects to the step-down inductor L1 (2.2 µH for 8 MHz or 10 µH for 4 MHz operation per Table 6)."
      },
      {
        "number": "34",
        "name": "VDDSMPS",
        "type": "power_in",
        "description": "SMPS power input that must always be connected to VDD, wired together with VDD and VDDRF."
      },
      {
        "number": "35",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply pin for the I/Os, internal regulator and system functions, specified at 1.71 to 3.6 V."
      },
      {
        "number": "36",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_fl I/O that is Fm+ capable with LCD function supplied by VLCD; alternate functions include TIM1_CH3, SAI1_PDM_DI1, I2C1_SDA, USART1_RX, USB_CRS_SYNC, LCD_COM2 and TIM17_BKIN."
      },
      {
        "number": "37",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_u I/O whose USB function (USB_DM) is supplied by VDDUSB when the USB alternate function is selected; other alternate functions include TIM1_CH4, TIM1_BKIN2, SPI1_MISO and USART1_CTS."
      },
      {
        "number": "38",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_u I/O whose USB function (USB_DP) is supplied by VDDUSB when the USB alternate function is selected; other alternate functions include TIM1_ETR, SPI1_MOSI, LPUART1_RX and USART1_RTS_DE."
      },
      {
        "number": "39",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_u I/O that after reset is configured as the JTMS-SWDIO debug function with its internal pull-up activated; other alternate functions include IR_OUT, USB_NOE and SAI1_SD_B."
      },
      {
        "number": "40",
        "name": "VDDUSB",
        "type": "power_in",
        "description": "Independent USB transceiver supply that must be 3.0 to 3.6 V when USB is used, or connected to VDD or ground when USB is not used."
      },
      {
        "number": "41",
        "name": "PA14",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_l I/O with LCD function supplied by VLCD that after reset is configured as the JTCK-SWCLK debug function with its internal pull-down activated; other alternate functions include LPTIM1_OUT, I2C1_SMBA and SAI1_FS_B."
      },
      {
        "number": "42",
        "name": "PA15 (JTDI)",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_l I/O with LCD function supplied by VLCD that after reset is configured as the JTDI debug function with its internal pull-up activated; other alternate functions include TIM2_CH1, TIM2_ETR, SPI1_NSS, TSC_G3_IO1 and MCO."
      },
      {
        "number": "43",
        "name": "PB3 (JTDO)",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_la I/O with LCD function supplied by VLCD and analog-switch function supplied by VDDA that after reset is configured as the JTDO-TRACESWO debug function; other alternate functions include TIM2_CH2, SPI1_SCK, USART1_RTS_DE and SAI1_SCK_B, and an additional function is COMP2_INM."
      },
      {
        "number": "44",
        "name": "PB4 (NJTRST)",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_fla I/O that is Fm+ capable with LCD and analog-switch functions and that after reset is configured as the NJTRST debug function with its internal pull-up activated; other alternate functions include I2C3_SDA, SPI1_MISO, USART1_CTS and TIM17_BKIN, and an additional function is COMP2_INP."
      },
      {
        "number": "45",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_l I/O with LCD function supplied by VLCD; alternate functions include LPTIM1_IN1, I2C1_SMBA, SPI1_MOSI, USART1_CK, LPUART1_TX, LCD_SEG9, COMP2_OUT and TIM16_BKIN."
      },
      {
        "number": "46",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_fla I/O that is Fm+ capable with LCD and analog-switch functions; alternate functions include LPTIM1_ETR, I2C1_SCL, USART1_TX, LCD_SEG6, SAI1_FS_B, TIM16_CH1N and MCO, and an additional function is COMP2_INP."
      },
      {
        "number": "47",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V-tolerant FT_fla I/O that is Fm+ capable with LCD and analog-switch functions; alternate functions include LPTIM1_IN2, TIM1_BKIN, I2C1_SDA, USART1_RX, LCD_SEG21 and TIM17_CH1N, and additional functions are COMP2_INM and PVD_IN."
      },
      {
        "number": "48",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply pin for the I/Os, internal regulator and system functions, specified at 1.71 to 3.6 V."
      },
      {
        "number": "49",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 UFQFPN48 package has an exposed die pad on its underside (datasheet notes it must be connected t; Pin types are mapped from datasheet abbreviations (S, I/O, I, O, RF). VLXSMPS is marked S in the dat; AT0 and AT1 are typed O (RF) in the datasheet and footnote 7 says they are reserved and must be kept",
          "exposed pad 49 added from the footprint"
        ],
        "pages_sent": 105,
        "cost_usd": 0.6129,
        "at": "2026-10-08T02:51:56"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588886723929509888",
        "pages": 196,
        "sha256": "c25acc0a128f2941",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 49,
        "described": 49,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "stm32wb55ceu6.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          7.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f2b38b0b4bf967c77e683e8d4599608b9f0503055ec535b93c4ebb5d0163e916",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm32wb55ceu6-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          7.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "0fe1f2bf4694e800f69c2dbf7f0d30aeaf58c0d2ab1d84add31876f332e1304d",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}