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STM32F302CBT6

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by Ray

STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Symbol & Footprint

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PCB Footprint

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Datasheet

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Contents

README

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STM32F302CBT6

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

STM32F302CBT6 from STMicroelectronics, in a LQFP-48(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VBAT power_in Backup power supply (1.8-3.6 V) for RTC and backup registers when VDD is off.
2 PC13 bidirectional GPIO PC13 (I/O TC standard 3.3 V). Supplied via backup power switch; limited drive: 2 MHz max at 30 pF, not for LED sourcing. Alt: TIM1_CH1N. Add'l: WKUP2, RTC_TAMP1, RTC_TS, RTC_OUT.
3 PC14/OSC32_IN bidirectional GPIO PC14 or 32 kHz LSE crystal input (OSC32_IN). Supplied through backup power switch, limited drive strength.
4 PC15/OSC32_OUT bidirectional GPIO PC15 or 32 kHz LSE crystal output (OSC32_OUT). Supplied through backup power switch.
5 PF0/OSC_IN bidirectional GPIO PF0 (I/O FTf, 5 V-tolerant FM+ capable) or HSE crystal input (OSC_IN, 4-32 MHz). Alt: TIM1_CH3N, I2C2_SDA.
6 PF1/OSC_OUT bidirectional GPIO PF1 (I/O FTf) or HSE crystal output (OSC_OUT). Alt: I2C2_SCL.
7 NRST bidirectional Bidirectional device reset input / internal reset output, active low, with embedded weak pull-up.
8 VSSA/VREF- power_in Analog ground and negative ADC reference. Tied to VSS externally on 48-pin package.
9 VDDA/VREF+ power_in Analog power supply and positive ADC reference (2.0-3.6 V; 2.4-3.6 V when DAC/OPAMP used). On the 48-pin package VREF+ is internally connected to VDDA.
10 PA0 bidirectional GPIO PA0 (I/O TTa, fast ADC channel). Alt: USART2_CTS, TIM2_CH1_ETR, TSC_G1_IO1, EVENTOUT. Add'l: ADC1_IN1, COMP1_INM, COMP1_OUT, RTC_TAMP2, WKUP1.
11 PA1 bidirectional GPIO PA1 (I/O TTa, fast ADC channel). Alt: USART2_RTS_DE, TIM2_CH2, TSC_G1_IO2, TIM15_CH1N, RTC_REFIN, EVENTOUT. Add'l: ADC1_IN2, COMP1_INP, OPAMP1_VINP.
12 PA2 bidirectional GPIO PA2 (I/O TTa, fast ADC channel, reduced touch sense sensitivity). Alt: USART2_TX, TIM2_CH3, TIM15_CH1, TSC_G1_IO3, COMP2_OUT, EVENTOUT. Add'l: ADC1_IN3, COMP2_INM, OPAMP1_VOUT.
13 PA3 bidirectional GPIO PA3 (I/O TTa, fast ADC channel). Alt: USART2_RX, TIM2_CH4, TIM15_CH2, TSC_G1_IO4, EVENTOUT. Add'l: ADC1_IN4, OPAMP1_VINP, COMP2_INP, OPAMP1_VINM.
14 PA4 bidirectional GPIO PA4 (I/O TTa, fast ADC channel, reduced touch sense sensitivity). Alt: SPI1_NSS, SPI3_NSS, I2S3_WS, USART2_CK, TSC_G2_IO1, TIM3_CH2, EVENTOUT. Add'l: ADC2_IN1, DAC1_OUT1, COMP1_INM, COMP2_INM, COMP4_INM, COMP6_INM.
15 PA5 bidirectional GPIO PA5 (I/O TTa, fast ADC channel, reduced touch sense sensitivity). Alt: SPI1_SCK, TIM2_CH1_ETR, TSC_G2_IO2, EVENTOUT. Add'l: ADC2_IN2, OPAMP1_VINP, OPAMP2_VINM, COMP1_INM, COMP2_INM, COMP4_INM, COMP6_INM.
16 PA6 bidirectional GPIO PA6 (I/O TTa, fast ADC channel, reduced touch sense sensitivity). Alt: SPI1_MISO, TIM3_CH1, TIM1_BKIN, TIM16_CH1, COMP1_OUT, TSC_G2_IO3, EVENTOUT. Add'l: ADC2_IN3, OPAMP2_VOUT.
17 PA7 bidirectional GPIO PA7 (I/O TTa, fast ADC channel). Alt: SPI1_MOSI, TIM3_CH2, TIM17_CH1, TIM1_CH1N, TSC_G2_IO4, COMP2_OUT, EVENTOUT. Add'l: ADC2_IN4, COMP2_INP, OPAMP2_VINP, OPAMP1_VINP.
18 PB0 bidirectional GPIO PB0 (I/O TTa). Alt: TIM3_CH3, TIM1_CH2N, TSC_G3_IO2, EVENTOUT. Add'l: COMP4_INP, OPAMP2_VINP.
19 PB1 bidirectional GPIO PB1 (I/O TTa, fast ADC channel, reduced touch sense sensitivity). Alt: TIM3_CH4, TIM1_CH3N, COMP4_OUT, TSC_G3_IO3, EVENTOUT.
20 PB2 bidirectional GPIO PB2 (I/O TTa). Alt: TSC_G3_IO4, EVENTOUT. Add'l: ADC2_IN12, COMP4_INM.
21 PB10 bidirectional GPIO PB10 (I/O TTa). Alt: USART3_TX, TIM2_CH3, TSC_SYNC, EVENTOUT.
22 PB11 bidirectional GPIO PB11 (I/O TTa). Alt: USART3_RX, TIM2_CH4, TSC_G6_IO1, EVENTOUT. Add'l: COMP6_INP.
23 VSS power_in Digital ground.
24 VDD power_in Digital power supply (2.0-3.6 V). Decouple locally with 100 nF near the pin.
25 PB12 bidirectional GPIO PB12 (I/O TTa, fast ADC channel, reduced touch sense sensitivity). Alt: SPI2_NSS, I2S2_WS, I2C2_SMBA, USART3_CK, TIM1_BKIN, TSC_G6_IO2, EVENTOUT.
26 PB13 bidirectional GPIO PB13 (I/O TTa, fast ADC channel). Alt: SPI2_SCK, I2S2_CK, USART3_CTS, TIM1_CH1N, TSC_G6_IO3, EVENTOUT.
27 PB14 bidirectional GPIO PB14 (I/O TTa, fast ADC channel). Alt: SPI2_MISO, I2S2ext_SD, USART3_RTS_DE, TIM1_CH2N, TIM15_CH1, TSC_G6_IO4, EVENTOUT. Add'l: OPAMP2_VINP.
28 PB15 bidirectional GPIO PB15 (I/O TTa, fast ADC channel). Alt: SPI2_MOSI, I2S2_SD, TIM1_CH3N, RTC_REFIN, TIM15_CH1N, TIM15_CH2, EVENTOUT. Add'l: COMP6_INM.
29 PA8 bidirectional GPIO PA8 (I/O FT, 5 V-tolerant). Alt: I2C2_SMBA, I2S2_MCK, USART1_CK, TIM1_CH1, TIM4_ETR, MCO, EVENTOUT.
30 PA9 bidirectional GPIO PA9 (I/O FTf, 5 V-tolerant FM+ capable). Alt: I2C2_SCL, I2S3_MCK, USART1_TX, TIM1_CH2, TIM2_CH3, TIM15_BKIN, TSC_G4_IO1, EVENTOUT.
31 PA10 bidirectional GPIO PA10 (I/O FTf, 5 V-tolerant FM+ capable). Alt: I2C2_SDA, USART1_RX, TIM1_CH3, TIM2_CH4, TIM17_BKIN, TSC_G4_IO2, COMP6_OUT, EVENTOUT.
32 PA11 bidirectional GPIO PA11 (I/O FT, 5 V-tolerant). Alt: USART1_CTS, USB_DM, CAN_RX, TIM1_CH1N, TIM1_CH4, TIM1_BKIN2, TIM4_CH1, COMP1_OUT, EVENTOUT. Common USB D- pin.
33 PA12 bidirectional GPIO PA12 (I/O FT, 5 V-tolerant). Alt: USART1_RTS_DE, USB_DP, CAN_TX, TIM1_CH2N, TIM1_ETR, TIM4_CH2, TIM16_CH1, COMP2_OUT, EVENTOUT. Common USB D+ pin.
34 PA13 bidirectional GPIO PA13 (I/O FT). SWDIO/JTMS after reset. Alt: USART3_CTS, TIM4_CH3, TIM16_CH1N, TSC_G4_IO3, IR_OUT, SWDIO-JTMS, EVENTOUT.
35 VSS power_in Digital ground.
36 VDD power_in Digital power supply (2.0-3.6 V).
37 PA14 bidirectional GPIO PA14 (I/O FTf, 5 V-tolerant FM+ capable). SWCLK/JTCK after reset. Alt: I2C1_SDA, USART2_TX, TIM1_BKIN, TSC_G4_IO4, SWCLK-JTCK, EVENTOUT.
38 PA15 bidirectional GPIO PA15 (I/O FTf). JTDI after reset. Alt: I2C1_SCL, SPI1_NSS, SPI3_NSS, I2S3_WS, JTDI, USART2_RX, TIM1_BKIN, TIM2_CH1_ETR, EVENTOUT.
39 PB3 bidirectional GPIO PB3 (I/O FT). JTDO/TRACESWO after reset. Alt: SPI3_SCK, I2S3_CK, SPI1_SCK, USART2_TX, TIM2_CH2, TIM3_ETR, TIM4_ETR, TSC_G5_IO1, JTDO-TRACESWO, EVENTOUT.
40 PB4 bidirectional GPIO PB4 (I/O FT). NJTRST after reset. Alt: SPI3_MISO, I2S3ext_SD, SPI1_MISO, USART2_RX, TIM3_CH1, TIM16_CH1, TIM17_BKIN, TSC_G5_IO2, NJTRST, EVENTOUT.
41 PB5 bidirectional GPIO PB5 (I/O FT, 5 V-tolerant). Alt: SPI3_MOSI, SPI1_MOSI, I2S3_SD, I2C1_SMBA, USART2_CK, TIM16_BKIN, TIM3_CH2, TIM17_CH1, EVENTOUT.
42 PB6 bidirectional GPIO PB6 (I/O FTf, 5 V-tolerant FM+ capable). Alt: I2C1_SCL, USART1_TX, TIM16_CH1N, TIM4_CH1, TSC_G5_IO3, EVENTOUT.
43 PB7 bidirectional GPIO PB7 (I/O FTf, 5 V-tolerant FM+ capable). Alt: I2C1_SDA, USART1_RX, TIM3_CH4, TIM4_CH2, TIM17_CH1N, TSC_G5_IO4, EVENTOUT.
44 BOOT0 input Dedicated boot memory selection input (B type). Level at reset selects boot area (main flash / system memory / SRAM per BOOT1).
45 PB8 bidirectional GPIO PB8 (I/O FTf). Alt: I2C1_SCL, CAN_RX, TIM16_CH1, TIM4_CH3, TIM1_BKIN, TSC_SYNC, COMP1_OUT, EVENTOUT.
46 PB9 bidirectional GPIO PB9 (I/O FTf). Alt: I2C1_SDA, CAN_TX, TIM17_CH1, TIM4_CH4, IR_OUT, COMP2_OUT, EVENTOUT.
47 VSS power_in Digital ground.
48 VDD power_in Digital power supply (2.0-3.6 V).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package LQFP-48(7x7)
Category MCU
Pins 48

Ordering variants

Same part, different packaging or reel option.

  • STM32F302CBT6
  • STM32F302CCT6
  • STM32F302RBT6
  • STM32F302RCT6
  • STM32F302VBT6
  • STM32F302VCT6
  • STM32F302VCY6

CAD (KiCad official)

  • Symbol: STM32F302CBT6
  • Footprint: Package_QFP:LQFP-48_7x7mm_P0.5mm
  • 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: STMicroelectronics datasheet (145 pp, sha256 10a072d58aca58c4, retrieved 2026-08-17, tier: manufacturer)
  • 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