STM32F301C8T6TR 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 (typ. 1.8 V to 3.6 V). Powers the RTC, backup registers, and LSE oscillator when VDD is off.
2	PC13	bidirectional	GPIO in VBAT power domain. Alt: TAMPER1/WKUP2/TIM1_CH1N. Additional: WKUP2, RTC_TAMP1, RTC_TS, RTC_OUT.
3	PC14/OSC32_IN	bidirectional	GPIO or 32.768 kHz LSE oscillator input. Backup-domain pin, limited drive strength.
4	PC15/OSC32_OUT	bidirectional	GPIO or 32.768 kHz LSE oscillator output. Backup-domain pin.
5	PF0/OSC_IN	bidirectional	GPIO or HSE crystal oscillator input. Alt: I2C2_SDA, SPI2_NSS/I2S2_WS, TIM1_CH3N. FTf 5V-tolerant I/O.
6	PF1/OSC_OUT	output	GPIO or HSE crystal oscillator output. Alt: I2C2_SCL, SPI2_SCK/I2S2_CK. FTf 5V-tolerant I/O.
7	NRST	bidirectional	Device reset input / internal reset output, active low. Bidirectional with internal pull-up.
8	VSSA/VREF-	power_in	Analog ground and negative reference voltage for ADC/DAC.
9	VDDA/VREF+	power_in	Analog power supply and positive reference voltage (2.0 V to 3.6 V) for ADC/DAC/op-amp/comparators.
10	PA0	bidirectional	GPIO with wake-up/tamper. Alt: TIM2_CH1/TIM2_ETR, TSC_G1_IO1, USART2_CTS, EVENTOUT. Additional: ADC1_IN1, RTC_TAMP2, WKUP1.
11	PA1	bidirectional	GPIO. Alt: RTC_REFIN, TIM2_CH2, TSC_G1_IO2, USART2_RTS_DE, TIM15_CH1N, EVENTOUT. Additional: ADC1_IN2.
12	PA2	bidirectional	GPIO. Alt: TIM2_CH3, TSC_G1_IO3, USART2_TX, COMP2_OUT, TIM15_CH1, EVENTOUT. Additional: ADC1_IN3, COMP2_INM.
13	PA3	bidirectional	GPIO. Alt: TIM2_CH4, TSC_G1_IO4, USART2_RX, TIM15_CH2, EVENTOUT. Additional: ADC1_IN4.
14	PA4	bidirectional	GPIO. Alt: TSC_G2_IO1, SPI3_NSS/I2S3_WS, USART2_CK, EVENTOUT. Additional: ADC1_IN5, DAC1_OUT1, COMP2_INM, COMP4_INM, COMP6_INM.
15	PA5	bidirectional	GPIO. Alt: TIM2_CH1/TIM2_ETR, TSC_G2_IO2, EVENTOUT. Additional: OPAMP2_VINM.
16	PA6	bidirectional	GPIO. Alt: TIM16_CH1, TSC_G2_IO3, TIM1_BKIN, EVENTOUT. Additional: ADC1_IN10, OPAMP2_VOUT.
17	PA7	bidirectional	GPIO. Alt: TIM17_CH1, TSC_G2_IO4, TIM1_CH1N, EVENTOUT. Additional: ADC1_IN15, COMP2_INP, OPAMP2_VINP.
18	PB0	bidirectional	GPIO. Alt: TSC_G3_IO2, TIM1_CH2N, EVENTOUT. Additional: ADC1_IN11, COMP4_INP, OPAMP2_VINP.
19	PB1	bidirectional	GPIO. Alt: TSC_G3_IO3, TIM1_CH3N, COMP4_OUT, EVENTOUT. Additional: ADC1_IN12.
20	PB2	bidirectional	GPIO. Alt: TSC_G3_IO4, EVENTOUT. Additional: COMP4_INM.
21	PB10	bidirectional	GPIO. Alt: TIM2_CH3, TSC_SYNC, USART3_TX, EVENTOUT.
22	PB11	bidirectional	GPIO. Alt: TIM2_CH4, TSC_G6_IO1, USART3_RX, EVENTOUT. Additional: ADC1_IN14, COMP6_INP.
23	VSS	power_in	Digital ground.
24	VDD	power_in	Digital power supply (2.0 V to 3.6 V).
25	PB12	bidirectional	GPIO. Alt: TSC_G6_IO2, I2C2_SMBAL, SPI2_NSS/I2S2_WS, TIM1_BKIN, USART3_CK, EVENTOUT.
26	PB13	bidirectional	GPIO. Alt: TSC_G6_IO3, SPI2_SCK/I2S2_CK, TIM1_CH1N, USART3_CTS, EVENTOUT. Additional: ADC1_IN13.
27	PB14	bidirectional	GPIO. Alt: TIM15_CH1, TSC_G6_IO4, SPI2_MISO/I2S2ext_SD, TIM1_CH2N, USART3_RTS_DE, EVENTOUT. Additional: OPAMP2_VINP.
28	PB15	bidirectional	GPIO. Alt: RTC_REFIN, TIM15_CH2, TIM15_CH1N, TIM1_CH3N, SPI2_MOSI/I2S2_SD, EVENTOUT. Additional: COMP6_INM.
29	PA8	bidirectional	GPIO. Alt: MCO, I2C3_SCL, I2C2_SMBAL, I2S2_MCK, TIM1_CH1, USART1_CK, EVENTOUT.
30	PA9	bidirectional	GPIO. Alt: I2C3_SMBAL, TSC_G4_IO1, I2C2_SCL, I2S3_MCK, TIM1_CH2, USART1_TX, TIM15_BKIN, TIM2_CH3, EVENTOUT.
31	PA10	bidirectional	GPIO. Alt: TIM17_BKIN, TSC_G4_IO2, I2C2_SDA, SPI2_MISO/I2S2ext_SD, TIM1_CH3, USART1_RX, COMP6_OUT, TIM2_CH4, EVENTOUT.
32	PA11	bidirectional	GPIO. Alt: SPI2_MOSI/I2S2_SD, TIM1_CH1N, USART1_CTS, TIM1_CH4, TIM1_BKIN2, EVENTOUT.
33	PA12	bidirectional	GPIO. Alt: TIM16_CH1, I2SCKIN, TIM1_CH2N, USART1_RTS_DE, COMP2_OUT, TIM1_ETR, EVENTOUT.
34	PA13	bidirectional	GPIO / SWDIO (default after reset). Alt: TIM16_CH1N, TSC_G4_IO3, IR-OUT, USART3_CTS, EVENTOUT.
35	VSS	power_in	Digital ground.
36	VDD	power_in	Digital power supply (2.0 V to 3.6 V).
37	PA14	bidirectional	GPIO / SWCLK (default after reset). Alt: JTCK, TSC_G4_IO4, I2C1_SDA, TIM1_BKIN, USART2_TX, EVENTOUT.
38	PA15	bidirectional	GPIO. Alt: JTDI, TIM2_CH1/TIM2_ETR, TSC_SYNC, I2C1_SCL, SPI3_NSS/I2S3_WS, USART2_RX, TIM1_BKIN, EVENTOUT.
39	PB3	bidirectional	GPIO / JTDO-TRACESWO (default after reset). Alt: TIM2_CH2, TSC_G5_IO1, SPI3_SCK/I2S3_CK, USART2_TX, EVENTOUT.
40	PB4	bidirectional	GPIO. Alt: JTRST, TIM16_CH1, TSC_G5_IO2, SPI3_MISO/I2S3ext_SD, USART2_RX, TIM17_BKIN, EVENTOUT.
41	PB5	bidirectional	GPIO. Alt: TIM16_BKIN, I2C1_SMBAl, SPI3_MOSI/I2S3_SD, USART2_CK, I2C3_SDA, TIM17_CH1, EVENTOUT.
42	PB6	bidirectional	GPIO. Alt: TIM16_CH1N, TSC_G5_IO3, I2C1_SCL, USART1_TX, EVENTOUT.
43	PB7	bidirectional	GPIO. Alt: TIM17_CH1N, TSC_G5_IO4, I2C1_SDA, USART1_RX, EVENTOUT.
44	BOOT0	input	Boot memory selection input. Sampled at reset to select boot source (main flash or system memory bootloader).
45	PB8	bidirectional	GPIO. Alt: TIM16_CH1, TSC_SYNC, I2C1_SCL, USART3_RX, TIM1_BKIN, EVENTOUT.
46	PB9	bidirectional	GPIO. Alt: TIM17_CH1, I2C1_SDA, IR-OUT, USART3_TX, COMP2_OUT, EVENTOUT.
47	VSS	power_in	Digital ground.
48	VDD	power_in	Digital power supply (2.0 V to 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.

STM32F301C8T6TR
STM32F301C8T6TRC6T6
STM32F301C8T6TRC6T6TR
STM32F301C8T6TRK8T6
STM32F301C8T6TRK6T6
STM32F301C8T6TRK8U6
STM32F301C8T6TRK6U6
STM32F301C8T6TRR8T6
STM32F301C8T6TRR6T6
STM32F301C8T6TRC8Y6
STM32F301C8T6TRC6Y6

CAD (KiCad official)

Symbol: STM32F301C8T6TR
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 (141 pp, sha256 9ae9edf84cf1c039, retrieved 2026-08-17, 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