component
STM32WB55CGU6
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "stm32wb55cgu6",
"title": "STM32WB55CGU6",
"brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"embedded processors & controllers",
"stm32wb55cgu6",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "STM32WB55CGU6",
"manufacturer": "STMicroelectronics",
"package": "UFQFPN-48(7x7)",
"pin_count": 49,
"category": "Embedded Processors & Controllers",
"subcategory": "Microcontrollers (MCU/MPU/SOC)",
"datasheet": "https://www.st.com/resource/en/datasheet/stm32wb55cgu6.pdf",
"parts": {
"symbol": "stm32wb55cgu6.kicad_sym",
"footprint": "stm32wb55cgu6.kicad_mod",
"model_3d": "stm32wb55cgu6-hero.glb",
"model_3d_plain": "stm32wb55cgu6-etched.glb",
"model_3d_step": "stm32wb55cgu6-etched.step",
"model_3d_step_plain": "stm32wb55cgu6.step",
"lbr": "stm32wb55cgu6.lbr"
},
"distributor_links": {
"lcsc": "C404023",
"digikey": "497-18489-ND",
"mouser": "511-STM32WB55CGU6"
},
"distributor_check": {
"checked_at": "2026-11-05T23:21:37Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "497-18489-ND",
"status": "found"
},
"mouser": {
"pn": "511-STM32WB55CGU6",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "VBAT",
"type": "power_in",
"description": "Backup-domain supply for the RTC, LSE and backup registers, specified from 1.55 to 3.6 V (VBAT backup operating voltage)."
},
{
"number": "2",
"name": "PC14-OSC32_IN",
"type": "bidirectional",
"description": "Supplied through the power switch, which sinks only 3 mA, so output speed must not exceed 2 MHz with a 30 pF load and it must not drive current sources; alternate function OSC32_IN for the LSE crystal."
},
{
"number": "3",
"name": "PC15-OSC32_OUT",
"type": "bidirectional",
"description": "Supplied through the power switch, which sinks only 3 mA, so output speed must not exceed 2 MHz with a 30 pF load and it must not drive current sources; alternate function OSC32_OUT for the LSE crystal."
},
{
"number": "4",
"name": "PH3-BOOT0",
"type": "bidirectional",
"description": "5 V-tolerant FT I/O multiplexed with the BOOT0 boot-mode function and with LSCO clock output (alternate function CM4_EVENTOUT, LSCO)."
},
{
"number": "5",
"name": "PB8",
"type": "bidirectional",
"description": "5 V-tolerant FT_fl I/O (Fm+ capable, LCD function supplied by VLCD) with alternate functions TIM1_CH2N, SAI1_PDM_CK1, I2C1_SCL, QUADSPI_BK1_IO1, LCD_SEG16, SAI1_MCLK_A and TIM16_CH1."
},
{
"number": "6",
"name": "PB9",
"type": "bidirectional",
"description": "5 V-tolerant FT_fla I/O (Fm+ capable, LCD and analog switch functions) with alternate functions TIM1_CH3N, I2C1_SDA, SPI2_NSS, IR_OUT, QUADSPI_BK1_IO0 and TIM17_CH1."
},
{
"number": "7",
"name": "NRST",
"type": "bidirectional",
"description": "Bidirectional reset pin with weak pull-up resistor (RST structure)."
},
{
"number": "8",
"name": "VDDA",
"type": "power_in",
"description": "Analog supply for the ADC, comparators and voltage reference buffer, 1.62 to 3.6 V when ADC or COMP is used; on UFQFPN48 it is connected to VREF+."
},
{
"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 COMP1_INM, ADC1_IN5 and RTC_TAMP2/WKUP1."
},
{
"number": "10",
"name": "PA1",
"type": "bidirectional",
"description": "5 V-tolerant FT_la I/O with analog switch function supplied by VDDA; alternate functions include TIM2_CH2, I2C1_SMBA, SPI1_SCK and LCD_SEG0, and additional functions COMP1_INP and ADC1_IN6."
},
{
"number": "11",
"name": "PA2",
"type": "bidirectional",
"description": "5 V-tolerant FT_la I/O with analog switch function supplied by VDDA; alternate functions include LSCO clock output, TIM2_CH3, LPUART1_TX and QUADSPI_BK1_NCS, and additional functions COMP2_INM, ADC1_IN7 and WKUP4."
},
{
"number": "12",
"name": "PA3",
"type": "bidirectional",
"description": "5 V-tolerant FT_la I/O with analog switch function supplied by VDDA; alternate functions include TIM2_CH4, SAI1_PDM_CK1, LPUART1_RX and QUADSPI_CLK, and additional functions 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 and LPTIM2_OUT, and additional functions 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 and LPTIM2_ETR, and additional functions COMP1_INM, COMP2_INM and ADC1_IN10."
},
{
"number": "15",
"name": "PA6",
"type": "bidirectional",
"description": "5 V-tolerant FT_la I/O; alternate functions include TIM1_BKIN, SPI1_MISO, LPUART1_CTS, QUADSPI_BK1_IO3 and TIM16_CH1, and additional function ADC1_IN11."
},
{
"number": "16",
"name": "PA7",
"type": "bidirectional",
"description": "5 V-tolerant FT_fla I/O (Fm+ capable, analog switch function supplied by VDDA); alternate functions include TIM1_CH1N, I2C3_SCL, SPI1_MOSI, QUADSPI_BK1_IO2 and TIM17_CH1, and additional function ADC1_IN12."
},
{
"number": "17",
"name": "PA8",
"type": "bidirectional",
"description": "5 V-tolerant FT_la I/O; alternate functions include MCO clock output, TIM1_CH1, USART1_CK, SAI1_SCK_A and LPTIM2_OUT, and additional function ADC1_IN15."
},
{
"number": "18",
"name": "PA9",
"type": "bidirectional",
"description": "5 V-tolerant FT_fla I/O (Fm+ capable, analog switch function supplied by VDDA); alternate functions include TIM1_CH2, I2C1_SCL, SPI2_SCK, USART1_TX and SAI1_FS_A, and additional functions 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 and SAI1_EXTCLK, and additional function COMP1_INP."
},
{
"number": "20",
"name": "VDD",
"type": "power_in",
"description": "Standard operating voltage supply of 1.71 to 3.6 V for I/Os, the internal regulator and system functions."
},
{
"number": "21",
"name": "RF1",
"type": "bidirectional",
"description": "RF input/output that must be connected to the antenna through a low-pass matching network, and that uses the nominal PCB layout."
},
{
"number": "22",
"name": "VSSRF",
"type": "power_in",
"description": "RF ground that must be connected to GND."
},
{
"number": "23",
"name": "VDDRF",
"type": "power_in",
"description": "Dedicated RF supply that must be connected to VDD, with minimum RF voltage of 1.71 V."
},
{
"number": "24",
"name": "OSC_OUT",
"type": "output",
"description": "32 MHz main oscillator output, also used as HSE source; use the nominal PCB layout according to the reference design (AN5165)."
},
{
"number": "25",
"name": "OSC_IN",
"type": "input",
"description": "32 MHz main oscillator input, also used as HSE source; use the nominal PCB layout according to the 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, CM4_EVENTOUT and RF_TX_MOD_EXT_PA; injected current limited to -5/0 mA and high output frequency may impact RF performance."
},
{
"number": "29",
"name": "PB1",
"type": "bidirectional",
"description": "3.6 V-tolerant TT I/O with alternate functions LPUART1_RTS_DE, LPTIM2_IN1 and CM4_EVENTOUT; injected current limited to -5/0 mA and high output frequency may impact RF performance."
},
{
"number": "30",
"name": "PE4",
"type": "bidirectional",
"description": "5 V-tolerant FT I/O with alternate function CM4_EVENTOUT."
},
{
"number": "31",
"name": "VFBSMPS",
"type": "power_in",
"description": "SMPS feedback voltage input, 1.4 to 3.6 V."
},
{
"number": "32",
"name": "VSSSMPS",
"type": "power_in",
"description": "Ground for the SMPS step-down converter that must be connected to GND."
},
{
"number": "33",
"name": "VLXSMPS",
"type": "power_out",
"description": "SMPS switching node connected to the external inductor L1 (2.2 uH for 8 MHz or 10 uH for 4 MHz operation)."
},
{
"number": "34",
"name": "VDDSMPS",
"type": "power_in",
"description": "SMPS supply that must always be connected to VDD, from 1.71 to 3.6 V."
},
{
"number": "35",
"name": "VDD",
"type": "power_in",
"description": "Standard operating voltage supply of 1.71 to 3.6 V for I/Os, the internal regulator and system functions."
},
{
"number": "36",
"name": "PA10",
"type": "bidirectional",
"description": "5 V-tolerant FT_fl I/O (Fm+ capable, LCD function supplied by VLCD); alternate functions include TIM1_CH3, I2C1_SDA, USART1_RX, USB_CRS_SYNC and SAI1_SD_A."
},
{
"number": "37",
"name": "PA11",
"type": "bidirectional",
"description": "5 V-tolerant FT_u I/O with USB function supplied by VDDB, alternate functions TIM1_CH4, SPI1_MISO, USART1_CTS and USB_DM."
},
{
"number": "38",
"name": "PA12",
"type": "bidirectional",
"description": "5 V-tolerant FT_u I/O with USB function supplied by VDDUSB; alternate functions include TIM1_ETR, SPI1_MOSI, LPUART1_RX, USART1_RTS_DE and USB_DP."
},
{
"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 internal pull-up activated."
},
{
"number": "40",
"name": "VDDUSB",
"type": "power_in",
"description": "USB transceiver supply of 3.0 to 3.6 V when USB is used; must be connected to VDD when not used."
},
{
"number": "41",
"name": "PA14",
"type": "bidirectional",
"description": "5 V-tolerant FT_l I/O that after reset is configured as the JTCK-SWCLK debug function, with internal pull-down activated."
},
{
"number": "42",
"name": "PA15 (JTDI)",
"type": "bidirectional",
"description": "5 V-tolerant FT_l I/O that after reset is configured as the JTDI debug function, with internal pull-up activated; alternate functions include TIM2_CH1, SPI1_NSS and MCO."
},
{
"number": "43",
"name": "PB3 (JTDO)",
"type": "bidirectional",
"description": "5 V-tolerant FT_la I/O with analog switch function supplied by VDDA; alternate functions include JTDO-TRACESWO, TIM2_CH2, SPI1_SCK and USART1_RTS_DE, and additional function COMP2_INM."
},
{
"number": "44",
"name": "PB4 (NJTRST)",
"type": "bidirectional",
"description": "5 V-tolerant FT_fla I/O that after reset is configured as the NJTRST debug function, with internal pull-up activated; alternate functions include I2C3_SDA, SPI1_MISO and USART1_CTS."
},
{
"number": "45",
"name": "PB5",
"type": "bidirectional",
"description": "5 V-tolerant FT_l I/O (LCD function supplied by VLCD); alternate functions include LPTIM1_IN1, I2C1_SMBA, SPI1_MOSI, USART1_CK and LPUART1_TX."
},
{
"number": "46",
"name": "PB6",
"type": "bidirectional",
"description": "5 V-tolerant FT_fla I/O (Fm+ capable, analog switch function supplied by VDDA); alternate functions include LPTIM1_ETR, I2C1_SCL, USART1_TX and MCO, and additional function COMP2_INP."
},
{
"number": "47",
"name": "PB7",
"type": "bidirectional",
"description": "5 V-tolerant FT_fla I/O (Fm+ capable, analog switch function supplied by VDDA); alternate functions include LPTIM1_IN2, TIM1_BKIN, I2C1_SDA and USART1_RX, and additional functions COMP2_INM and PVD_IN."
},
{
"number": "48",
"name": "VDD",
"type": "power_in",
"description": "Standard operating voltage supply of 1.71 to 3.6 V for I/Os, the internal regulator and system functions."
},
{
"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: Package is UFQFPN48 (7x7 mm), the U suffix in STM32WB55CGU6. Pin numbers and names are from the UFQF"
],
"pages_sent": 103,
"cost_usd": 0.1379,
"at": "2026-11-05T23:21:21"
},
"datasheet": {
"url": "https://www.st.com/resource/en/datasheet/stm32wb55cgu6.pdf",
"pages": 193,
"sha256": "7eddf71700b00f75",
"source_tier": "mfr"
},
"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": "stm32wb55cgu6.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
7,
7,
0.77
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "f2b38b0b4bf967c77e683e8d4599608b9f0503055ec535b93c4ebb5d0163e916",
"checked": "2026-11-05",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "stm32wb55cgu6-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
7,
7,
0.77
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "1fbbcc352dd4efbcd0b404e21f164e1de47ea848e200c396b25e31189dc65c2d",
"checked": "2026-11-05",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "STMicroelectronics",
"Package": "UFQFPN-48(7x7)",
"Category": "Embedded Processors & Controllers",
"Pins": "49"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "7eddf71700b00f75ce670de9066a718e5d9f72e5c81bc85c041c9de9f34e5cb5",
"rows": [
{
"name": "External main supply voltage",
"symbol": "VDDX - VSS",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 4,
"conditions": "Including VDD, VDDA, VDDUSB, VLCD, VDDRF, VDDSMPS, VBAT, VREF+",
"source_page": 85,
"source": "datasheet"
},
{
"name": "Input voltage on TT_xx pins",
"symbol": "VIN",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 4,
"conditions": "Input voltage on TT_xx pins",
"source_page": 85,
"source": "datasheet"
},
{
"name": "Input voltage on any other pin",
"symbol": "VIN",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 4,
"conditions": "Input voltage on any other pin",
"source_page": 85,
"source": "datasheet"
},
{
"name": "Variations between different VDDX power pins",
"symbol": "|ΔVDDx|",
"kind": "absolute_maximum",
"unit": "mV",
"min": null,
"typ": null,
"max": 50,
"conditions": "Variations between different VDDX power pins of the same domain",
"source_page": 85,
"source": "datasheet"
},
{
"name": "Variations between all the different ground pins",
"symbol": "|VSSx-VSS|",
"kind": "absolute_maximum",
"unit": "mV",
"min": null,
"typ": null,
"max": 50,
"conditions": "Variations between all ground pins, include VREF-",
"source_page": 85,
"source": "datasheet"
},
{
"name": "Allowed voltage difference for VREF+ > VDDA",
"symbol": "VREF+ - VDDA",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 0.4,
"conditions": "VREF+ > VDDA",
"source_page": 85,
"source": "datasheet"
},
{
"name": "Total current into sum of all VDD power lines (source)",
"symbol": "∑IVDD",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 130,
"conditions": "",
"source_page": 85,
"source": "datasheet"
},
{
"name": "Total current out of sum of all VSS ground lines (sink)",
"symbol": "∑IVSS",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 130,
"conditions": "",
"source_page": 85,
"source": "datasheet"
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