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Contents

Pinout
Key specifications
CAD (KiCad official)
Provenance

README

markdown

STM32WB55RGV6

STMicroelectronics · RF Transceiver ICs · QFN-68-EP(8x8)

STM32WB55RGV6 from STMicroelectronics, in a QFN-68-EP(8x8). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model, then checked against ST open pin data); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	VBAT	power_in	Backup supply for RTC, LSE oscillator, and backup registers; powered from external battery or VDD.
2	PC13	bidirectional	GPIO port C bit 13 with RTC tamper, timestamp, output, and wakeup functions; powered through backup domain.
3	PC14-OSC32_IN	bidirectional	GPIO port C bit 14 or 32.768 kHz low-speed external oscillator input for RTC.
4	PC15-OSC32_OUT	bidirectional	GPIO port C bit 15 or 32.768 kHz low-speed external oscillator output.
5	PH3-BOOT0	bidirectional	GPIO port H bit 3 with BOOT0 function for boot mode selection and configurable as GPIO.
6	PB8	bidirectional	GPIO port B bit 8 with 5 V tolerant I/O; supports Timer, I2C1, SPI2, SAI, and LCD alternate functions.
7	PB9	bidirectional	GPIO port B bit 9 with 5 V tolerant I/O; supports Timer, I2C1, SPI2, IR output, and LCD functions.
8	NRST	bidirectional	System reset input pin with internal weak pull-up resistor; asserts reset when driven low.
9	PC0	bidirectional	GPIO port C bit 0 with ADC input IN1; supports LPUART, Timer, and low-power timer functions.
10	PC1	bidirectional	GPIO port C bit 1 with ADC input IN2; supports SPI2, LPUART, and Timer alternate functions.
11	PC2	bidirectional	GPIO port C bit 2 with ADC input IN3; supports SPI2 and low-power timer functions.
12	PC3	bidirectional	GPIO port C bit 3 with ADC input IN4; supports SAI, SPI2, LCD VLCD drive, and low-power timer functions.
13	VREF+	power_in	Positive reference voltage input for ADC and comparators; may be internally connected to VDDA in UFQFPN48.
14	VDDA	power_in	Analog supply voltage for ADC, comparators, and voltage reference buffer; 1.62 V to 3.6 V operating range.
15	PA0	bidirectional	GPIO port A bit 0 with ADC input IN5 and comparator input; supports Timer2 and SAI functions.
16	PA1	bidirectional	GPIO port A bit 1 with ADC input IN6 and comparator input; supports Timer2, I2C1, and SPI1 functions.
17	PA2	bidirectional	GPIO port A bit 2 with ADC input IN7; supports LPUART TX, Quadspi NCS, and comparator output.
18	PA3	bidirectional	GPIO port A bit 3 with ADC input IN8; supports LPUART RX, Quadspi CLK, and SAI functions.
19	PA4	bidirectional	GPIO port A bit 4 with ADC input IN9 and comparator input; supports SPI1 and SAI functions.
20	PA5	bidirectional	GPIO port A bit 5 with ADC input IN10 and comparator input; supports Timer2, SPI1, and SAI functions.
21	PA6	bidirectional	GPIO port A bit 6 with ADC input IN11; supports Timer1, SPI1, LPUART, and Quadspi functions.
22	PA7	bidirectional	GPIO port A bit 7 with ADC input IN12 and comparator output; supports Timer1, SPI1, and Quadspi functions.
23	PA8	bidirectional	GPIO port A bit 8 with ADC input IN15; supports Timer1, USART1, LCD COM, and SAI functions.
24	PA9	bidirectional	GPIO port A bit 9 with ADC input IN16 and comparator input; supports Timer1, I2C1, USART1, and SPI2.
25	PC4	bidirectional	GPIO port C bit 4 with ADC input IN13 and comparator input; supports LCD segment function.
26	PC5	bidirectional	GPIO port C bit 5 with ADC input IN14 and comparator input; supports wakeup from low-power modes.
27	PB2	bidirectional	GPIO port B bit 2 with comparator input; supports RTC output, Timer, I2C, and SPI functions.
28	PB10	bidirectional	GPIO port B bit 10 with comparator output; supports Timer2, I2C3, SPI2, LPUART, and Quadspi functions.
29	PB11	bidirectional	GPIO port B bit 11 with comparator output; supports Timer2, I2C3, LPUART, and Quadspi functions.
30	VDD	power_in	Main supply voltage for core logic and peripherals; 1.71 V to 3.6 V operating range.
31	RF1	bidirectional	RF input/output pin for 2.4 GHz antenna connection through low-pass matching network.
32	VSSRF	power_in	RF section ground; must be connected to ground plane for proper RF operation.
33	VDDRF	power_in	Dedicated RF supply voltage; 1.71 V to 3.6 V operating range.
34	OSC_OUT	output	32 MHz crystal oscillator output for HSE high-speed external clock used by RF and CPU.
35	OSC_IN	input	32 MHz crystal oscillator input; requires external 32 MHz crystal for HSE clock source.
36	AT0	output	Reserved for production use as antenna tuning output; keep unconnected in user applications.
37	AT1	output	Reserved for production use as antenna tuning output; keep unconnected in user applications.
38	PB0	bidirectional	GPIO port B bit 0 with 3.6 V tolerant I/O; supports comparator output and external PA control.
39	PB1	bidirectional	GPIO port B bit 1 with 3.6 V tolerant I/O; supports LPUART and low-power timer functions.
40	PE4	bidirectional	GPIO port E bit 4 with general-purpose digital I/O and event output capability.
41	VFBSMPS	power_in	SMPS step-down converter feedback voltage input for voltage regulation feedback.
42	VSSSMPS	power_in	SMPS converter ground return for step-down converter switching current.
43	VLXSMPS	power_in	SMPS inductor output pin for switched step-down converter filtered output.
44	VDDSMPS	power_in	SMPS input supply voltage; must be connected to main VDD for step-down converter operation.
45	VDD	power_in	Main supply voltage for core logic and peripherals; 1.71 V to 3.6 V operating range.
46	PB12	bidirectional	GPIO port B bit 12; supports Timer1, I2C3, SPI2, LPUART, and LCD segment functions.
47	PB13	bidirectional	GPIO port B bit 13; supports Timer1, I2C3, SPI2, LPUART, and LCD segment functions.
48	PB14	bidirectional	GPIO port B bit 14; supports Timer1, I2C3, SPI2, and LCD segment alternate functions.
49	PB15	bidirectional	GPIO port B bit 15; supports Timer1, SPI2, RTC reference input, and LCD segment functions.
50	PC6	bidirectional	GPIO port C bit 6; supports Touch Sensing, LCD segment, and Timer alternate functions.
51	PA10	bidirectional	GPIO port A bit 10 with 5 V tolerant I/O; supports Timer1, I2C1, USART1, USB, and LCD functions.
52	PA11	bidirectional	GPIO port A bit 11 with 5 V tolerant I/O and USB DM function; supports Timer1 and USB device.
53	PA12	bidirectional	GPIO port A bit 12 with 5 V tolerant I/O and USB DP function; supports USART1 and LPUART.
54	PA13 (JTMS_SWDIO)	bidirectional	JTAG TMS or SWD data I/O pin with internal pull-up; can be used as GPIO with alternate functions.
55	VDDUSB	power_in	USB transceiver supply voltage; 3.0 V to 3.6 V when USB device is used.
56	PA14 (JTCK_SWCLK)	bidirectional	JTAG TCK or SWD clock pin with internal pull-down; can be used as GPIO with LCD and Timer functions.
57	PA15 (JTDI)	bidirectional	JTAG TDI pin with internal pull-up; can be used as GPIO with Timer2 and alternate functions.
58	PC10	bidirectional	GPIO port C bit 10; supports Trace data, Touch Sensing, and LCD COM/segment functions.
59	PC11	bidirectional	GPIO port C bit 11; supports Trace data, Touch Sensing, and LCD COM/segment functions.
60	PC12	bidirectional	GPIO port C bit 12; supports RTC tamper/wakeup events and LCD COM/segment functions.
61	PD0	bidirectional	GPIO port D bit 0; supports SPI2 NSS and Timer alternate functions.
62	PD1	bidirectional	GPIO port D bit 1; supports SPI2 SCK and Timer alternate functions.
63	PB3 (JTDO)	bidirectional	JTAG TDO or Trace SWO pin with internal pull-up; can be used as GPIO with Timer2 and SAI functions.
64	PB4 (NJTRST)	bidirectional	JTAG NTRST pin with internal pull-up; can be used as GPIO with Timer17 BKIN and comparator input.
65	PB5	bidirectional	GPIO port B bit 5; supports Timer1, I2C1, SPI1, USART1, LPUART, and Timer16 BKIN functions.
66	PB6	bidirectional	GPIO port B bit 6 with 5 V tolerant I/O; supports Timer1, I2C1, USART1, and Timer16 functions.
67	PB7	bidirectional	GPIO port B bit 7 with 5 V tolerant I/O and comparator input; supports Timer1, I2C1, USART1, and Timer17.
68	VDD	power_in	Main supply voltage for core logic and peripherals; 1.71 V to 3.6 V operating range.

Key specifications

Parameter	Value
Manufacturer	STMicroelectronics
Package	QFN-68-EP(8x8)
Category	RF And Wireless
Pins	68

CAD (KiCad official)

Symbol: STM32WB55RGV6
Footprint: Package_DFN_QFN:QFN-68-1EP_8x8mm_P0.4mm_EP5.2x5.2mm
3D model: QFN-68-EP(8x8) (KiCad packages3D, STEP)
3D model files: stm32wb55rgv6-etched.step / stm32wb55rgv6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32wb55rgv6.step / stm32wb55rgv6.glb are the bare package body.

Provenance

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

Datasheet: STMicroelectronics datasheet (172 pp, sha256 aa7e79c1edc21ddb, retrieved 2026-09-29, tier: lcsc)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF