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BLUENRG-345AT

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STMicroelectronics RF Transceiver ICs, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentradio frequency chip-antennabluenrg-345atfactory-2.0.0extractor-text

Verified BLUENRG-345AT

by Ray · last 2 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

2 Nov 2026RayPublished by the parts factory: tier mfr, 33 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: BLUENRG-345AT · QFN-32-EP(5x5) · 33 pins
  • ✓copper: 33 copper pads, none touching another net
  • ✓datasheet: all 33 pin names found in the 73-page datasheet
  • ✓distributor: lcsc C3606636, digikey 497-BLUENRG-345ATTR-ND, mouser 511-BLUENRG-345AT
  • ✓family: QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-_h9qhcwk/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 33 pins = 33 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 33 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ bluenrg-345at.kicad_sym✓ bluenrg-345at.kicad_mod✓ bluenrg-345at.step
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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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BLUENRG-345AT

STMicroelectronics · RF Transceiver ICs · QFN-32-EP(5x5)

BLUENRG-345AT from STMicroelectronics, in a QFN-32-EP(5x5). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 PB3 bidirectional Bidirectional 5 V tolerant GPIO (FT_a) with wake-up, alternate functions USART_CTS, LPUART_TX and TIM1_CH4, and ADC input VINP0.
2 PB2 bidirectional Bidirectional 5 V tolerant GPIO (FT_a) with wake-up, alternate functions USART_RTS_DE, PDM_DATA and TIM1_CH3, and ADC input VINM0.
3 PB1 bidirectional Bidirectional 5 V tolerant GPIO (FT_a) with wake-up, alternate functions SPI1_NSS, PDM_CLK and TIM1_ETR, and ADC input VINP1.
4 PB0 bidirectional Bidirectional 5 V tolerant GPIO (FT_a) with wake-up, alternate functions USART_RX, LPUART_RTS_DE and TIM1_CH2N, and ADC input VINM1.
5 PA11 bidirectional Bidirectional 5 V tolerant GPIO with wake-up and GPIO-in-DEEPSTOP capability, alternate functions MCO, SPI1_NSS, RX_SEQUENCE and SPI3_MOSI.
6 PA10 bidirectional Bidirectional 5 V tolerant GPIO with BOOT, wake-up and GPIO-in-DEEPSTOP capability, alternate functions LCO, SPI1_MISO and TX_SEQUENCE.
7 PA9 bidirectional Bidirectional 5 V tolerant GPIO with wake-up and GPIO-in-DEEPSTOP capability, alternate functions USART_TX, SPI1_SCK and RTC_OUT.
8 PA8 bidirectional Bidirectional 5 V tolerant GPIO with wake-up and GPIO-in-DEEPSTOP capability, alternate functions USART_RX, SPI1_MOSI and RX_SEQUENCE.
9 PA0 bidirectional Bidirectional GPIO (FT_f, Fm+ capable) with wake-up, alternate functions I2C1_SCL, USART_CTS and SPI2_MCK.
10 PA1 bidirectional Bidirectional GPIO (FT_f, Fm+ capable) with wake-up, alternate functions I2C1_SDA, SPI2_MISO and USART_TX.
11 PA2 bidirectional Bidirectional 5 V tolerant GPIO with wake-up, serving as SWDIO by default, with alternate functions USART_CK, TIM_BKIN and SPI3_MCK.
12 PA3 bidirectional Bidirectional 5 V tolerant GPIO with wake-up, serving as SWCLK by default, with alternate functions USART_RTS_DE, TIM_BKIN2 and SPI3_SCK.
13 VDD2 power_in Battery voltage supply input, 1.7-3.6 V.
14 RF1 bidirectional RF input/output with 50 Ω impedance.
15 VDDRF power_in Battery voltage supply input for the RF block, 1.7-3.6 V.
16 OSCOUT bidirectional Connection to the 32 MHz crystal (RF I/O pin).
17 OSCIN bidirectional Connection to the 32 MHz crystal (RF I/O pin).
18 PB15 bidirectional Bidirectional 5 V tolerant GPIO with alternate functions I2C1_SMBA, TX_SEQUENCE, MCO and USART_TX.
19 PB14 bidirectional Bidirectional 3.6 V tolerant GPIO (FT_a) with alternate functions SPI1_MOSI, I2C2_SDA and USART_RX, and additional function VIN_PVD.
20 PB13 bidirectional Bidirectional 5 V tolerant GPIO with alternate functions SPI1_MISO, I2C2_SCL and PDM_CLK, and additional function SXTAL1.
21 PB12 bidirectional Bidirectional 5 V tolerant GPIO with alternate functions SPI1_SCK, LCO and PDM_DATA, and additional function SXTAL0.
22 VFBSD power_out SMPS output (feedback pin for the step-down converter).
23 VSSSD power_in SMPS ground.
24 VLXSD bidirectional SMPS input/output switching node.
25 VDDSD power_in Battery voltage supply input for the SMPS, 1.7-3.6 V.
26 RSTN bidirectional Bidirectional reset pin with weak pull-up resistor.
27 VCAP power_out 1.2 V digital core supply output.
28 PB7 bidirectional Bidirectional GPIO (FT_f, Fm+ capable) with wake-up, alternate functions I2C2_SDA, SPI2_SCK and LPUART_RX.
29 PB6 bidirectional Bidirectional GPIO (FT_f, Fm+ capable) with wake-up, alternate functions I2C2_SCL, SPI2_NSS and LPUART_TX.
30 PB5 bidirectional Bidirectional 3.6 V tolerant GPIO (TT) with wake-up, alternate functions LPUART_RX, SPI2_MOSI and PDM_CLK, and additional function PGA_VBIAS_MIC (not 5 V tolerant).
31 PB4 bidirectional Bidirectional 5 V tolerant GPIO with wake-up, alternate functions LPUART_TX, SPI2_MISO and PDM_DATA, and additional function PGA_VIN.
32 VDD1 power_in Battery voltage supply input, 1.7-3.6 V.
33 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package QFN-32-EP(5x5)
Category Radio Frequency Chip/Antenna
Pins 33

CAD (KiCad official)

  • Symbol: BLUENRG-345AT
  • Footprint: Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
  • 3D model: QFN-32-EP(5x5) (KiCad packages3D, STEP)
  • 3D model files: bluenrg-345at-etched.step / bluenrg-345at-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bluenrg-345at.step / bluenrg-345at.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: STMicroelectronics datasheet (73 pp, sha256 c3c8def9f2699f65, retrieved 2026-11-02, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF