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Contents

Pinout
Key specifications
CAD (KiCad official)
Provenance

README

markdown

STM32G473CBT6

STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)

STM32G473CBT6 from STMicroelectronics, in a LQFP-48(7x7). 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-domain supply input for the RTC, LSE and backup registers, used when VDD is not present.
2	PC13	bidirectional	Power-switch-supplied FT GPIO that sinks only 3 mA, so output use is limited to 2 MHz at 30 pF and it must not be used as a current source such as an LED drive.
3	PC14-OSC32_IN	bidirectional	Power-switch-supplied FT GPIO with the same 2 MHz / 30 pF and no-current-source limits, also serving as the 32 kHz oscillator input OSC32_IN.
4	PC15-OSC32_OUT	bidirectional	Power-switch-supplied FT GPIO with the same 2 MHz / 30 pF and no-current-source limits, also serving as the 32 kHz oscillator output OSC32_OUT.
5	PF0-OSC_IN	bidirectional	Fm+ capable FT_fa I/O that doubles as the crystal oscillator input OSC_IN for the 4 to 48 MHz HSE.
6	PF1-OSC_OUT	bidirectional	TT/FT_a I/O that doubles as the crystal oscillator output OSC_OUT, with ADC2_IN10 and COMP3_INM as additional functions.
7	PG10-NRST	bidirectional	Bidirectional reset pin with embedded weak pull-up resistor, also usable as an FT I/O with MCO alternate function.
8	PA0	bidirectional	TT_a I/O (3.6 V tolerant) with analog switch function supplied by VDDA, with ADC12_IN1 and WKUP1 as additional functions.
9	PA1	bidirectional	TT_a I/O (3.6 V tolerant) with analog switch function supplied by VDDA, with ADC12_IN2 and OPAMP1_VINP as additional functions.
10	PA2	bidirectional	FT_a I/O (5 V tolerant) with analog switch function supplied by VDDA, with ADC1_IN3 and COMP2_INM as additional functions.
11	PA3	bidirectional	TT_a I/O (3.6 V tolerant) with analog switch function supplied by VDDA, with ADC1_IN4 and COMP2_INP as additional functions.
12	PA4	bidirectional	TT_a I/O (3.6 V tolerant) with analog switch function supplied by VDDA, with DAC1_OUT1 and ADC2_IN17 as additional functions.
13	PA5	bidirectional	TT_a I/O (3.6 V tolerant) with analog switch function supplied by VDDA, with DAC1_OUT2 and ADC2_IN13 as additional functions.
14	PA6	bidirectional	TT_a I/O (3.6 V tolerant) with analog switch function supplied by VDDA, with DAC2_OUT1 and ADC2_IN3 as additional functions.
15	PA7	bidirectional	TT_a I/O (3.6 V tolerant) with analog switch function supplied by VDDA, with ADC2_IN4 and COMP2_INP as additional functions.
16	PB0	bidirectional	TT_a I/O (3.6 V tolerant) with analog switch function supplied by VDDA, with ADC3_IN12/ADC1_IN15 and COMP4_INP as additional functions.
17	PB1	bidirectional	TT_a I/O (3.6 V tolerant) with analog switch function supplied by VDDA, with ADC3_IN1/ADC1_IN12 and COMP1_INP as additional functions.
18	PB2	bidirectional	TT_a I/O (3.6 V tolerant) with analog switch function supplied by VDDA, with ADC2_IN12 and COMP4_INM as additional functions.
19	VSSA	power_in	Analog ground for the ADC, DAC, OPAMP, COMP and VREFBUF blocks, which must be connected to the external ground.
20	VREF+	power_in	Positive reference voltage for the ADCs and DACs, which on this package is also listed as the VREFBUF_OUT function.
21	VDDA	power_in	Analog supply for the ADC, DAC, OPAMP, COMP and VREFBUF blocks, decoupled as shown in the power supply scheme.
22	PB10	bidirectional	TT_a I/O (3.6 V tolerant) with analog switch function supplied by VDDA, with COMP5_INM, OPAMP3_VINM and OPAMP4_VINM as additional functions.
23	VSS	power_in	Digital ground pin that must be connected to the external ground.
24	VDD	power_in	Main digital supply pin, operating from 1.71 V to 3.6 V.
25	PB11	bidirectional	TT_a I/O (3.6 V tolerant) with analog switch function supplied by VDDA, with ADC12_IN14, COMP6_INP and OPAMP4_VINP as additional functions.
26	PB12	bidirectional	TT_a I/O (3.6 V tolerant) with analog switch function supplied by VDDA, with ADC4_IN3/ADC1_IN11, COMP7_INM and OPAMP4_VOUT as additional functions.
27	PB13	bidirectional	TT_a I/O (3.6 V tolerant) with analog switch function supplied by VDDA, with ADC3_IN5, COMP5_INP and OPAMP3_VINP as additional functions.
28	PB14	bidirectional	TT_a I/O (3.6 V tolerant) with analog switch function supplied by VDDA, with ADC4_IN4/ADC1_IN5, COMP7_INP and OPAMP2_VINP as additional functions.
29	PB15	bidirectional	TT_a I/O (3.6 V tolerant) with analog switch function supplied by VDDA, with RTC_REFIN, ADC4_IN5/ADC2_IN15 and COMP6_INM as additional functions.
30	PA8	bidirectional	FT_a I/O (5 V tolerant) with analog switch function supplied by VDDA, with MCO output and ADC5_IN1 as additional functions.
31	PA9	bidirectional	5 V tolerant Fm+ capable I/O with UCPD dead-battery and analog switch functions, with ADC5_IN2 and UCPD1_DBCC1 as additional functions.
32	PA10	bidirectional	5 V tolerant Fm+ capable I/O with UCPD dead-battery and analog switch functions, with UCPD1_DBCC2 as an additional function.
33	PA11	bidirectional	FT_u I/O (5 V tolerant) with USB function, carrying USB_DM.
34	PA12	bidirectional	FT_u I/O (5 V tolerant) with USB function, carrying USB_DP.
35	VSS	power_in	Digital ground pin that must be connected to the external ground.
36	VDD	power_in	Main digital supply pin, operating from 1.71 V to 3.6 V.
37	PA13	bidirectional	Fm+ capable FT_f I/O that after reset is the SWDIO/JTMS debug function with its internal pull-up activated.
38	PA14	bidirectional	Fm+ capable FT_f I/O that after reset is the SWCLK/JTCK debug function with its internal pull-down activated.
39	PA15	bidirectional	Fm+ capable FT_f I/O that after reset is the JTDI debug function with its internal pull-up activated.
40	PB3	bidirectional	FT I/O that after reset is configured as the JTDO/TRACESWO debug alternate function.
41	PB4	bidirectional	USB Type-C PD capable FT_c I/O that after reset is the JTRST debug function with its internal pull-up activated, also carrying UCPD1_CC2.
42	PB5	bidirectional	Fm+ capable FT_f I/O with I2C1_SMBA, SPI1_MOSI and FDCAN2_RX as alternate functions.
43	PB6	bidirectional	USB Type-C PD capable FT_c I/O with USART1_TX and I2C1_SCL as alternate functions, also carrying UCPD1_CC1.
44	PB7	bidirectional	Fm+ capable FT_f I/O with PVD_IN as an additional function, plus USART1_RX and I2C1_SDA as alternate functions.
45	PB8-BOOT0	bidirectional	Fm+ capable FT_f I/O that is also the dedicated BOOT0 pin; the datasheet recommends setting PB8 out of analog mode after startup to limit consumption if unconnected.
46	PB9	bidirectional	Fm+ capable FT_f I/O with IR_OUT, I2C1_SDA and USART3_TX as alternate functions.
47	VSS	power_in	Digital ground pin that must be connected to the external ground.
48	VDD	power_in	Main digital supply pin, operating from 1.71 V to 3.6 V.

Key specifications

Parameter	Value
Manufacturer	STMicroelectronics
Package	LQFP-48(7x7)
Category	Embedded Processors & Controllers
Pins	48

CAD (KiCad official)

Symbol: STM32G473CBT6
Footprint: Package_QFP:LQFP-48_7x7mm_P0.5mm
3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
3D model files: stm32g473cbt6-etched.step / stm32g473cbt6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32g473cbt6.step / stm32g473cbt6.glb are the bare package body.

Provenance

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

Datasheet: STMicroelectronics datasheet (223 pp, sha256 63caa155ed7b741d, retrieved 2026-10-11, tier: lcsc)
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