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STM32F334R8T6TR
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-64(10x10). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSTM32F334R8T6TR
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-64(10x10)
STM32F334R8T6TR from STMicroelectronics, in a LQFP-64(10x10). 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 power supply for the RTC and backup registers. |
| 2 | PC13 | bidirectional | Standard 3.3 V I/O supplied through the power switch, which sinks only 3 mA; in output mode it must not exceed 2 MHz with a 30 pF load and must not be used as a current source such as an LED driver. |
| 3 | PC14 / OSC32_IN | bidirectional | Standard 3.3 V I/O supplied through the power switch (3 mA sink limit, maximum 2 MHz with 30 pF load in output mode, not to be used as a current source) that also serves as the 32 kHz oscillator input OSC32_IN. |
| 4 | PC15 / OSC32_OUT | bidirectional | Standard 3.3 V I/O supplied through the power switch (3 mA sink limit, maximum 2 MHz with 30 pF load in output mode, not to be used as a current source) that also serves as the 32 kHz oscillator output OSC32_OUT. |
| 5 | PF0 / OSC_IN | bidirectional | 5 V tolerant I/O that serves as the crystal oscillator input OSC_IN (4 to 32 MHz crystal), with alternate function TIM1_CH3N. |
| 6 | PF1 / OSC_OUT | bidirectional | 5 V tolerant I/O that serves as the crystal oscillator output OSC_OUT (4 to 32 MHz crystal). |
| 7 | NRST | bidirectional | Bidirectional active-low device reset input and internal reset output with an embedded weak pull-up resistor. |
| 8 | PC0 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions EVENTOUT and TIM1_CH1 and additional function ADC12_IN6. |
| 9 | PC1 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions EVENTOUT and TIM1_CH2 and additional function ADC12_IN7. |
| 10 | PC2 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions EVENTOUT and TIM1_CH3 and additional function ADC12_IN8. |
| 11 | PC3 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions EVENTOUT, TIM1_CH4 and TIM1_BKIN2 and additional function ADC12_IN9. |
| 12 | VSSA/VREF- | power_in | Analog ground and negative reference voltage. |
| 13 | VDDA/VREF+ | power_in | Analog power supply (2.0 to 3.6 V) and positive reference voltage. |
| 14 | PA0 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions TIM2_CH1/TIM2_ETR, TSC_G1_IO1, USART2_CTS and EVENTOUT, and additional functions ADC1_IN1, RTC_TAMP2/WKUP1. |
| 15 | PA1 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions TIM2_CH2, TSC_G1_IO2, USART2_RTS_DE and TIM15_CH1N, and additional functions ADC1_IN2 and RTC_REFIN. |
| 16 | PA2 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions TIM2_CH3, TSC_G1_IO3, USART2_TX, COMP2_OUT and TIM15_CH1, and additional functions ADC1_IN3 and COMP2_INM. |
| 17 | PA3 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions TIM2_CH4, TSC_G1_IO4, USART2_RX and TIM15_CH2, and additional function ADC1_IN4. |
| 18 | VSS | power_in | Digital ground. |
| 19 | VDD | power_in | Digital power supply (2.0 to 3.6 V). |
| 20 | PA4 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC with reduced touch sensing sensitivity (recommended as sampling capacitor I/O), with alternate functions TIM3_CH2, TSC_G2_IO1, SPI1_NSS, USART2_CK, and additional functions ADC2_IN1, DAC1_OUT1, COMP2_INM, COMP4_INM, COMP6_INM. |
| 21 | PA5 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC with reduced touch sensing sensitivity (recommended as sampling capacitor I/O), with alternate functions TIM2_CH1/TIM2_ETR, TSC_G2_IO2, SPI1_SCK, and additional functions ADC2_IN2, DAC1_OUT2, OPAMP2_VINM. |
| 22 | PA6 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC with reduced touch sensing sensitivity (recommended as sampling capacitor I/O), with alternate functions TIM16_CH1, TIM3_CH1, TSC_G2_IO3, SPI1_MISO, TIM1_BKIN, OPAMP2_DIG, and additional functions ADC2_IN3, DAC2_OUT1, OPAMP2_VOUT. |
| 23 | PA7 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions TIM17_CH1, TIM3_CH2, TSC_G2_IO4, SPI1_MOSI, TIM1_CH1N and EVENTOUT, and additional functions ADC2_IN4, COMP2_INP, OPAMP2_VINP. |
| 24 | PC4 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions EVENTOUT, TIM1_ETR and USART1_TX, and additional function ADC2_IN5. |
| 25 | PC5 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions EVENTOUT, TIM15_BKIN, TSC_G3_IO1 and USART1_RX, and additional functions ADC2_IN11 and OPAMP2_VINM. |
| 26 | PB0 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions TIM3_CH3, TSC_G3_IO2, TIM1_CH2N and EVENTOUT, and additional functions ADC1_IN11, COMP4_INP, OPAMP2_VINP. |
| 27 | PB1 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions TIM3_CH4, TSC_G3_IO3, TIM1_CH3N, COMP4_OUT, HRTIM1_SCOUT and EVENTOUT, and additional function ADC1_IN12. |
| 28 | PB2 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions TSC_G3_IO4, HRTIM_SCIN and EVENTOUT, and additional functions ADC2_IN12 and COMP4_INM. |
| 29 | PB10 | bidirectional | 3.3 V tolerant standard I/O (TT, not directly connected to the ADC), with alternate functions TIM2_CH3, TSC_SYNC, USART3_TX, HRTIM1_FLT3 and EVENTOUT. |
| 30 | PB11 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions TIM2_CH4, TSC_G6_IO1, USART3_RX, HRTIM1_FLT4 and EVENTOUT, and additional function COMP6_INP. |
| 31 | VSS | power_in | Digital ground. |
| 32 | VDD | power_in | Digital power supply (2.0 to 3.6 V). |
| 33 | PB12 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions TSC_G6_IO2, TIM1_BKIN, USART3_CK, HRTIM1_CHC1 and EVENTOUT, and additional function ADC2_IN13. |
| 34 | PB13 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions TSC_G6_IO3, TIM1_CH1N, USART3_CTS, HRTIM1_CHC2 and EVENTOUT, and additional function ADC1_IN13. |
| 35 | PB14 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions TIM15_CH1, TSC_G6_IO4, TIM1_CH2N, USART3_RTS_DE, HRTIM1_CHD1 and EVENTOUT, and additional functions ADC2_IN14 and OPAMP2_VINP. |
| 36 | PB15 | bidirectional | 3.3 V tolerant I/O directly connected to the ADC, with alternate functions TIM15_CH2, TIM15_CH1N, TIM1_CH3N, HRTIM1_CHD2 and EVENTOUT, and additional functions ADC2_IN15, COMP6_INM and RTC_REFIN. |
| 37 | PC6 | bidirectional | 5 V tolerant (FT) I/O with alternate functions EVENTOUT, TIM3_CH1, HRTIM1_EEV10 and COMP6_OUT. |
| 38 | PC7 | bidirectional | 5 V tolerant (FT) I/O with alternate functions EVENTOUT, TIM3_CH2 and HRTIM1_FLT5. |
| 39 | PC8 | bidirectional | 5 V tolerant (FT) I/O with alternate functions EVENTOUT, TIM3_CH3 and HRTIM1_CHE1. |
| 40 | PC9 | bidirectional | 5 V tolerant (FT) I/O with alternate functions EVENTOUT, TIM3_CH4 and HRTIM1_CHE2. |
| 41 | PA8 | bidirectional | 5 V tolerant (FT) I/O with alternate functions MCO, TIM1_CH1, USART1_CK, HRTIM1_CHA1 and EVENTOUT. |
| 42 | PA9 | bidirectional | 5 V tolerant (FT) I/O with alternate functions TSC_G4_IO1, TIM1_CH2, USART1_TX, TIM15_BKIN, TIM2_CH3, HRTIM1_CHA2 and EVENTOUT. |
| 43 | PA10 | bidirectional | 5 V tolerant (FT) I/O with alternate functions TIM17_BKIN, TSC_G4_IO2, TIM1_CH3, USART1_RX, COMP6_OUT, TIM2_CH4, HRTIM1_CHB1 and EVENTOUT. |
| 44 | PA11 | bidirectional | 5 V tolerant (FT) I/O with alternate functions TIM1_CH1N, USART1_CTS, CAN_RX, TIM1_CH4, TIM1_BKIN2, HRTIM1_CHB2 and EVENTOUT. |
| 45 | PA12 | bidirectional | 5 V tolerant (FT) I/O with alternate functions TIM16_CH1, TIM1_CH2N, USART1_RTS_DE, COMP2_OUT, CAN_TX, TIM1_ETR, HRTIM1_FLT1 and EVENTOUT. |
| 46 | PA13 | bidirectional | 5 V tolerant (FT) I/O with alternate functions JTMS/SWDAT, TIM16_CH1N, TSC_G4_IO3, IR_OUT, USART3_CTS and EVENTOUT. |
| 47 | VSS | power_in | Digital ground. |
| 48 | VDD | power_in | Digital power supply (2.0 to 3.6 V). |
| 49 | PA14 | bidirectional | 5 V tolerant, FM+ capable (FTf) I/O with alternate functions JTCK/SWCLK, TSC_G4_IO4, I2C1_SDA, TIM1_BKIN, USART2_TX and EVENTOUT. |
| 50 | PA15 | bidirectional | 5 V tolerant, FM+ capable (FTf) I/O with alternate functions JTDI, TIM2_CH1/TIM2_ETR, TSC_SYNC, I2C1_SCL, SPI1_NSS, USART2_RX, TIM1_BKIN, HRTIM1_FLT2 and EVENTOUT. |
| 51 | PC10 | bidirectional | 5 V tolerant (FT) I/O with alternate functions EVENTOUT and USART3_TX. |
| 52 | PC11 | bidirectional | 5 V tolerant (FT) I/O with alternate functions EVENTOUT, HRTIM1_EEV2 and USART3_RX. |
| 53 | PC12 | bidirectional | 5 V tolerant (FT) I/O with alternate functions EVENTOUT, HRTIM1_EEV1 and USART3_CK. |
| 54 | PD2 | bidirectional | 5 V tolerant (FT) I/O with alternate functions EVENTOUT and TIM3_ETR. |
| 55 | PB3 | bidirectional | 5 V tolerant (FT) I/O with alternate functions JTDO/TRACESWO, TIM2_CH2, TSC_G5_IO1, SPI1_SCK, USART2_TX, TIM3_ETR, HRTIM1_SCOUT, HRTIM1_EEV9 and EVENTOUT. |
| 56 | PB4 | bidirectional | 5 V tolerant (FT) I/O with alternate functions NJTRST, TIM16_CH1, TIM3_CH1, TSC_G5_IO2, SPI1_MISO, USART2_RX, TIM17_BKIN, HRTIM1_EEV7 and EVENTOUT. |
| 57 | PB5 | bidirectional | 5 V tolerant (FT) I/O with alternate functions TIM16_BKIN, TIM3_CH2, I2C1_SMBA, SPI1_MOSI, USART2_CK, TIM17_CH1, HRTIM1_EEV6 and EVENTOUT. |
| 58 | PB6 | bidirectional | 5 V tolerant, FM+ capable (FTf) I/O with alternate functions TIM16_CH1N, TSC_G5_IO3, I2C1_SCL, USART1_TX, HRTIM1_SCIN, HRTIM1_EEV4 and EVENTOUT. |
| 59 | PB7 | bidirectional | 5 V tolerant, FM+ capable (FTf) I/O with alternate functions TIM17_CH1N, TSC_G5_IO4, I2C1_SDA, USART1_RX, TIM3_CH4, HRTIM1_EEV3 and EVENTOUT. |
| 60 | BOOT0 | input | Dedicated BOOT0 input pin that selects the boot configuration (Flash, system memory or SRAM). |
| 61 | PB8 | bidirectional | 5 V tolerant, FM+ capable (FTf) I/O with alternate functions TIM16_CH1, TSC_SYNC, I2C1_SCL, USART3_RX, CAN_RX, TIM1_BKIN, HRTIM1_EEV8 and EVENTOUT. |
| 62 | PB9 | bidirectional | 5 V tolerant, FM+ capable (FTf) I/O with alternate functions TIM17_CH1, I2C1_SDA, IR_OUT, USART3_TX, COMP2_OUT, CAN_TX, HRTIM1_EEV5 and EVENTOUT. |
| 63 | VSS | power_in | Digital ground. |
| 64 | VDD | power_in | Digital power supply (2.0 to 3.6 V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-64(10x10) |
| Category | Embedded Processors & Controllers |
| Pins | 64 |
CAD (KiCad official)
- Symbol:
STM32F334R8T6TR - Footprint:
Package_QFP:LQFP-64_10x10mm_P0.5mm - 3D model: LQFP-64(10x10) (KiCad packages3D, STEP)
- 3D model files:
stm32f334r8t6tr-etched.step/stm32f334r8t6tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32f334r8t6tr.step/stm32f334r8t6tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (125 pp, sha256
4727fd8b6c87c9e0, retrieved 2026-10-10, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).