component
BLUENRG-345AC
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), TQFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "bluenrg-345ac",
"title": "BLUENRG-345AC",
"brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), TQFN-32-EP(5x5). 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",
"bluenrg-345ac",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "BLUENRG-345AC",
"manufacturer": "STMicroelectronics",
"package": "TQFN-32-EP(5x5)",
"pin_count": 33,
"category": "Embedded Processors & Controllers",
"subcategory": "Microcontrollers (MCU/MPU/SOC)",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589042216795328512",
"parts": {
"symbol": "bluenrg-345ac.kicad_sym",
"footprint": "bluenrg-345ac.kicad_mod",
"model_3d": "bluenrg-345ac-hero.glb",
"model_3d_plain": "bluenrg-345ac.glb",
"model_3d_step": "bluenrg-345ac-etched.step",
"model_3d_step_plain": "bluenrg-345ac.step",
"lbr": "bluenrg-345ac.lbr"
},
"distributor_links": {
"lcsc": "C3446000",
"digikey": "497-BLUENRG-345ACTR-ND",
"mouser": "511-BLUENRG-345AC"
},
"distributor_check": {
"checked_at": "2026-10-08T19:45:26Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "497-BLUENRG-345ACTR-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "511-BLUENRG-345AC",
"status": "found",
"lifecycle": "Part Number Change"
}
},
"pins": [
{
"number": "1",
"name": "PB3",
"type": "bidirectional",
"description": "5 V tolerant I/O (FT_a) with wakeup and ADC_VINP0 analog input; alternate functions USART_CTS, LPUART_TX, TIM1_CH4."
},
{
"number": "2",
"name": "PB2",
"type": "bidirectional",
"description": "5 V tolerant I/O (FT_a) with wakeup and ADC_VINM0 analog input; alternate functions USART_RTS_DE, PDM_DATA, TIM1_CH3."
},
{
"number": "3",
"name": "PB1",
"type": "bidirectional",
"description": "5 V tolerant I/O (FT_a) with wakeup and ADC_VINP1 analog input; alternate functions SPI1_NSS, PDM_CLK, TIM1_ETR."
},
{
"number": "4",
"name": "PB0",
"type": "bidirectional",
"description": "5 V tolerant I/O (FT_a) with wakeup and ADC_VINM1 analog input; alternate functions USART_RX, LPUART_RTS_DE, TIM1_CH2N."
},
{
"number": "5",
"name": "PA11",
"type": "bidirectional",
"description": "5 V tolerant I/O (FT) with wakeup, GPIO in DEEPSTOP and RTC_OUT additional function; alternate functions MCO, SPI1_NSS, RX_SEQUENCE, SPI3_MOSI, TIM1_CH6, I2S3_SD."
},
{
"number": "6",
"name": "PA10",
"type": "bidirectional",
"description": "5 V tolerant I/O (FT) with BOOT, wakeup and GPIO in DEEPSTOP functions, LCO additional function; alternate functions SPI1_MISO, TX_SEQUENCE, SPI3_MCK, TIM1_CH5, I2S3_MCK."
},
{
"number": "7",
"name": "PA9",
"type": "bidirectional",
"description": "5 V tolerant I/O (FT) with wakeup and GPIO in DEEPSTOP, LCO additional function; alternate functions USART_TX, SPI1_SCK, RTC_OUT, SPI3_NSS, TIM1_CH4, I2S3_WS."
},
{
"number": "8",
"name": "PA8",
"type": "bidirectional",
"description": "5 V tolerant I/O (FT) with wakeup and GPIO in DEEPSTOP, RTC_OUT additional function; alternate functions USART_RX, SPI1_MOSI, RX_SEQUENCE, SPI3_MISO, TIM1_CH3, I2S3_MISO."
},
{
"number": "9",
"name": "PA0",
"type": "bidirectional",
"description": "I/O (FT_f, Fm+ capable, 5 V tolerant) with wakeup; alternate functions I2C1_SCL, USART_CTS, SPI2_MCK, TIM1_CH3, I2S2_MCK."
},
{
"number": "10",
"name": "PA1",
"type": "bidirectional",
"description": "I/O (FT_f, Fm+ capable, 5 V tolerant) with wakeup; alternate functions I2C1_SDA, SPI2_MISO, USART_TX, TIM1_CH4, I2S2_MISO."
},
{
"number": "11",
"name": "PA2",
"type": "bidirectional",
"description": "5 V tolerant I/O (FT) with wakeup; SWDIO debug function listed on this pin, alternate functions USART_CK, TIM_BKIN, SPI3_MCK, TIM1_CH5, I2S3_MCK."
},
{
"number": "12",
"name": "PA3",
"type": "bidirectional",
"description": "5 V tolerant I/O (FT) with wakeup; SWCLK debug function listed on this pin, alternate functions USART_RTS_DE, TIM_BKIN2, SPI3_SCK, TIM1_CH6, I2S3_SCK."
},
{
"number": "13",
"name": "VDD2",
"type": "power_in",
"description": "Battery voltage input, 1.7 to 3.6 V."
},
{
"number": "14",
"name": "RF1",
"type": "bidirectional",
"description": "RF input/output with 50 Ω impedance."
},
{
"number": "15",
"name": "VDDRF",
"type": "power_in",
"description": "Battery voltage input, 1.7 to 3.6 V."
},
{
"number": "16",
"name": "OSCOUT",
"type": "passive",
"description": "32 MHz crystal connection (RF I/O pin)."
},
{
"number": "17",
"name": "OSCIN",
"type": "passive",
"description": "32 MHz crystal connection (RF I/O pin)."
},
{
"number": "18",
"name": "PB15",
"type": "bidirectional",
"description": "5 V tolerant I/O (FT); alternate functions I2C1_SMBA, TX_SEQUENCE, MCO, TIM1_CH4N, TIM1_CH6, USART_TX."
},
{
"number": "19",
"name": "PB14",
"type": "bidirectional",
"description": "5 V tolerant I/O (FT_a) with VIN_PVD additional function; alternate functions SPI1_MOSI, I2C2_SDA, TIM1_ETR, TIM1_CH3N, TIM1_CH5, USART_RX."
},
{
"number": "20",
"name": "PB13",
"type": "bidirectional",
"description": "5 V tolerant I/O (FT) with SXTAL1 additional function; alternate functions SPI1_MISO, I2C2_SCL, PDM_CLK, TIM1_BKIN2, TIM1_CH4."
},
{
"number": "21",
"name": "PB12",
"type": "bidirectional",
"description": "5 V tolerant I/O (FT) with SXTAL0 additional function; alternate functions SPI1_SCK, LCO, PDM_DATA, TIM1_BKIN, TIM1_CH3."
},
{
"number": "22",
"name": "VFBSD",
"type": "power_out",
"description": "SMPS output."
},
{
"number": "23",
"name": "VSSSD",
"type": "power_in",
"description": "SMPS ground."
},
{
"number": "24",
"name": "VLXSD",
"type": "bidirectional",
"description": "SMPS input/output."
},
{
"number": "25",
"name": "VDDSD",
"type": "power_in",
"description": "Battery voltage input, 1.7 to 3.6 V."
},
{
"number": "26",
"name": "RSTN",
"type": "bidirectional",
"description": "Reset pin (RST type) with weak pull-up resistor."
},
{
"number": "27",
"name": "VCAP",
"type": "power_out",
"description": "1.2 V digital core supply pin."
},
{
"number": "28",
"name": "PB7",
"type": "bidirectional",
"description": "5 V tolerant I/O (FT_f, Fm+ capable) with wakeup; alternate functions I2C2_SDA, SPI2_SCK, LPUART_RX, TIM1_CH2, I2S2_SCK."
},
{
"number": "29",
"name": "PB6",
"type": "bidirectional",
"description": "5 V tolerant I/O (FT_f, Fm+ capable) with wakeup; alternate functions I2C2_SCL, SPI2_NSS, LPUART_TX, TIM1_CH1, I2S2_WS."
},
{
"number": "30",
"name": "PB5",
"type": "bidirectional",
"description": "3.6 V tolerant I/O (TT, not 5 V tolerant per note 1) with wakeup and PGA_VBIAS_MIC additional function; alternate functions LPUART_RX, SPI2_MOSI, PDM_CLK, I2S2_SD."
},
{
"number": "31",
"name": "PB4",
"type": "bidirectional",
"description": "5 V tolerant I/O (FT) with wakeup and PGA_VIN additional function; alternate functions LPUART_TX, SPI2_MISO, PDM_DATA, I2S2_MISO."
},
{
"number": "32",
"name": "VDD1",
"type": "power_in",
"description": "Battery voltage input, 1.7 to 3.6 V."
},
{
"number": "33",
"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 naming mismatch: the hint says TQFN-32-EP(5x5), but the datasheet names this package QFN32 (; The MPN BLUENRG-345AC is not mapped to a package in the datasheet. Ordering information (Table 49) l; The exposed pad is printed without a number, so it is listed as 'EP'. Confirm the pad numbering conv",
"exposed pad 33 added from the footprint",
"dropped thermal pad ['EP'] absent from footprint"
],
"pages_sent": 27,
"cost_usd": 0.1292,
"at": "2026-10-08T19:44:52"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589042216795328512",
"pages": 73,
"sha256": "614fe4d1991b0774",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "bluenrg-345ac.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5,
5,
0.875
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
"checked": "2026-10-08",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "bluenrg-345ac-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5,
5,
0.875
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "ce1c5863dc56829c11a86ca83295952e861789dce7699fb94b523e8e68fcb8e9",
"checked": "2026-10-08",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "STMicroelectronics",
"Package": "TQFN-32-EP(5x5)",
"Category": "Embedded Processors & Controllers",
"Pins": "33"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"bluenrg-345ac"
],
"discovery_pitch": "BLUENRG-345AC (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"bluenrg-345ac.kicad_sym",
"bluenrg-345ac.kicad_mod",
"bluenrg-345ac.glb",
"bluenrg-345ac.step",
"bluenrg-345ac.lbr",
"docs/hero.png",
"docs/bluenrg-345ac-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"bluenrg-345ac-hero.glb",
"bluenrg-345ac-hero.overlay.json"
],
"visibility": {
"public": true
}
}