# STM32F071RBT6

**STMicroelectronics** · Microcontrollers (MCU/MPU/SOC) · LQFP-64(10x10)

STM32F071RBT6 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 RTC and backup registers when VDD is not present, voltage range 1.65 to 3.6 V. |
| 2 | PC13 | bidirectional | Port C pin 13, configured as 3.3 V GPIO with RTC TAMP1, RTC_TS, RTC_OUT alternate functions. |
| 3 | PC14-OSC32_IN | bidirectional | Port C pin 14 / 32 kHz oscillator input, configured as 3.3 V GPIO with OSC32_IN alternate function. |
| 4 | PC15-OSC32_OUT | bidirectional | Port C pin 15 / 32 kHz oscillator output, configured as 3.3 V GPIO with OSC32_OUT alternate function. |
| 5 | PF0-OSC_IN | bidirectional | Port F pin 0 / HSE oscillator input, configured as 5 V tolerant GPIO with CRS_SYNC alternate function. |
| 6 | PF1-OSC_OUT | bidirectional | Port F pin 1 / HSE oscillator output, configured as 5 V tolerant GPIO. |
| 7 | NRST | bidirectional | Device reset pin with embedded weak pull-up resistor, bidirectional reset input/output active low. |
| 8 | PC0 | bidirectional | Port C pin 0, configured as 3.3 V GPIO connected to ADC input channel ADC_IN10. |
| 9 | PC1 | bidirectional | Port C pin 1, configured as 3.3 V GPIO connected to ADC input channel ADC_IN11. |
| 10 | PC2 | bidirectional | Port C pin 2, configured as 3.3 V GPIO connected to ADC input channel ADC_IN12 with SPI2_MISO alternate function. |
| 11 | PC3 | bidirectional | Port C pin 3, configured as 3.3 V GPIO connected to ADC input channel ADC_IN13 with SPI2_MOSI alternate function. |
| 12 | VSSA | power_in | Analog ground for ADC, DAC, and analog circuits. |
| 13 | VDDA | power_in | Analog power supply for ADC, DAC, and analog circuits, voltage range 2.4 to 3.6 V (minimum 2.4 V when ADC/DAC used). |
| 14 | PA0 | bidirectional | Port A pin 0, configured as 3.3 V GPIO connected to ADC channel ADC_IN0 with USART2_CTS, TIM2_CH1_ETR, TSC_G1_IO1 alternate functions. |
| 15 | PA1 | bidirectional | Port A pin 1, configured as 3.3 V GPIO connected to ADC channel ADC_IN1 with USART2_RTS, TIM2_CH2 alternate functions. |
| 16 | PA2 | bidirectional | Port A pin 2, configured as 3.3 V GPIO connected to ADC channel ADC_IN2 with USART2_TX, TIM2_CH3 alternate functions. |
| 17 | PA3 | bidirectional | Port A pin 3, configured as 3.3 V GPIO connected to ADC channel ADC_IN3 with USART2_RX, TIM2_CH4 alternate functions. |
| 18 | VSS | power_in | Digital ground, must be connected to external power supply ground. |
| 19 | VDD | power_in | Digital power supply for internal logic and I/O, voltage range 2.0 to 3.6 V. |
| 20 | PA4 | bidirectional | Port A pin 4, configured as 3.3 V GPIO connected to ADC channel ADC_IN4 with SPI1_NSS, TIM14_CH1, TSC_G2_IO1 alternate functions. |
| 21 | PA5 | bidirectional | Port A pin 5, configured as 3.3 V GPIO connected to ADC channel ADC_IN5 with SPI1_SCK, CEC, TIM2_CH1_ETR alternate functions. |
| 22 | PA6 | bidirectional | Port A pin 6, configured as 3.3 V GPIO connected to ADC channel ADC_IN6 with SPI1_MISO, TIM3_CH1, TIM1_BKIN alternate functions. |
| 23 | PA7 | bidirectional | Port A pin 7, configured as 3.3 V GPIO connected to ADC channel ADC_IN7 with SPI1_MOSI, TIM3_CH2, TIM14_CH1 alternate functions. |
| 24 | PC4 | bidirectional | Port C pin 4, configured as 3.3 V GPIO connected to ADC channel ADC_IN14 with USART3_TX alternate function. |
| 25 | PC5 | bidirectional | Port C pin 5, configured as 3.3 V GPIO connected to ADC channel ADC_IN15 with TSC_G3_IO1, USART3_RX alternate functions. |
| 26 | PB0 | bidirectional | Port B pin 0, configured as 3.3 V GPIO connected to ADC channel ADC_IN8 with TIM3_CH3, TIM1_CH2N alternate functions. |
| 27 | PB1 | bidirectional | Port B pin 1, configured as 3.3 V GPIO connected to ADC channel ADC_IN9 with TIM3_CH4, TIM14_CH1 alternate functions. |
| 28 | PB2 | bidirectional | Port B pin 2, configured as 5 V tolerant GPIO with TSC_G3_IO4 alternate function. |
| 29 | PB10 | bidirectional | Port B pin 10, configured as 5 V tolerant GPIO with SPI2_SCK, I2C2_SCL, USART3_TX, TSC_SYNC alternate functions. |
| 30 | PB11 | bidirectional | Port B pin 11, configured as 5 V tolerant GPIO with USART3_RX, TIM2_CH4, I2C2_SDA, TSC_G6_IO1 alternate functions. |
| 31 | VSS | power_in | Digital ground, must be connected to external power supply ground. |
| 32 | VDD | power_in | Digital power supply for internal logic and I/O, voltage range 2.0 to 3.6 V. |
| 33 | PB12 | bidirectional | Port B pin 12, configured as 5 V tolerant GPIO with TIM1_BKIN, TIM15_BKIN, SPI2_NSS, I2S2_WS, USART3_CK alternate functions. |
| 34 | PB13 | bidirectional | Port B pin 13, configured as 5 V tolerant FM+ capable GPIO with SPI2_SCK, I2S2_CK, I2C2_SCL, USART3_CTS alternate functions. |
| 35 | PB14 | bidirectional | Port B pin 14, configured as 5 V tolerant FM+ capable GPIO with SPI2_MISO, I2S2_MCK, I2C2_SDA, USART3_RTS alternate functions. |
| 36 | PB15 | bidirectional | Port B pin 15, configured as 5 V tolerant GPIO with SPI2_MOSI, I2S2_SD, TIM1_CH3N, TIM15_CH1N, TIM15_CH2 alternate functions. |
| 37 | PC6 | bidirectional | Port C pin 6, configured as 5 V tolerant GPIO supplied by VDDIO2 with TIM3_CH1 alternate function. |
| 38 | PC7 | bidirectional | Port C pin 7, configured as 5 V tolerant GPIO supplied by VDDIO2 with TIM3_CH2 alternate function. |
| 39 | PC8 | bidirectional | Port C pin 8, configured as 5 V tolerant GPIO supplied by VDDIO2 with TIM3_CH3 alternate function. |
| 40 | PC9 | bidirectional | Port C pin 9, configured as 5 V tolerant GPIO supplied by VDDIO2 with TIM3_CH4 alternate function. |
| 41 | PA8 | bidirectional | Port A pin 8, configured as 5 V tolerant GPIO supplied by VDDIO2 with USART1_CK, TIM1_CH1, MCO, CRS_SYNC alternate functions. |
| 42 | PA9 | bidirectional | Port A pin 9, configured as 5 V tolerant GPIO supplied by VDDIO2 with USART1_TX, TIM1_CH2, TIM15_BKIN, TSC_G4_IO1 alternate functions. |
| 43 | PA10 | bidirectional | Port A pin 10, configured as 5 V tolerant GPIO supplied by VDDIO2 with USART1_RX, TIM1_CH3, TIM17_BKIN, TSC_G4_IO2 alternate functions. |
| 44 | PA11 | bidirectional | Port A pin 11, configured as 5 V tolerant GPIO supplied by VDDIO2 with USART1_CTS, TIM1_CH4, COMP1_OUT, TSC_G4_IO3 alternate functions. |
| 45 | PA12 | bidirectional | Port A pin 12, configured as 5 V tolerant GPIO supplied by VDDIO2 with USART1_RTS, TIM1_ETR, COMP2_OUT, TSC_G4_IO4 alternate functions. |
| 46 | PA13 | bidirectional | Port A pin 13, configured as 5 V tolerant GPIO supplied by VDDIO2 with SWDIO, IR_OUT alternate functions, internal pull-up active after reset. |
| 47 | VSS | power_in | Digital ground, must be connected to external power supply ground. |
| 48 | VDDIO2 | power_in | Independent I/O supply voltage for pins PC6-PC9, PA8-PA14, PD0-PD2, voltage range 1.65 to 3.6 V, must not be supplied without valid VDD. |
| 49 | PA14 | bidirectional | Port A pin 14, configured as 5 V tolerant GPIO supplied by VDDIO2 with USART2_TX, SWCLK alternate functions, internal pull-down active after reset. |
| 50 | PA15 | bidirectional | Port A pin 15, configured as 5 V tolerant GPIO supplied by VDDIO2 with SPI1_NSS, I2S1_WS, USART2_RX, USART4_RTS, TIM2_CH1_ETR alternate functions. |
| 51 | PC10 | bidirectional | Port C pin 10, configured as 5 V tolerant GPIO supplied by VDDIO2 with USART3_TX, USART4_TX alternate function. |
| 52 | PC11 | bidirectional | Port C pin 11, configured as 5 V tolerant GPIO supplied by VDDIO2 with USART3_RX, USART4_RX alternate function. |
| 53 | PC12 | bidirectional | Port C pin 12, configured as 5 V tolerant GPIO supplied by VDDIO2 with USART3_CK, USART4_CK alternate function. |
| 54 | PD2 | bidirectional | Port D pin 2, configured as 5 V tolerant GPIO supplied by VDDIO2 with USART3_RTS, TIM3_ETR alternate functions. |
| 55 | PB3 | bidirectional | Port B pin 3, configured as 5 V tolerant GPIO with SPI1_SCK, I2S1_CK, TIM2_CH2, TSC_G5_IO1 alternate functions. |
| 56 | PB4 | bidirectional | Port B pin 4, configured as 5 V tolerant GPIO with SPI1_MISO, I2S1_MCK, TIM17_BKIN, TIM3_CH1, TSC_G5_IO2 alternate functions. |
| 57 | PB5 | bidirectional | Port B pin 5, configured as 5 V tolerant GPIO with SPI1_MOSI, I2S1_SD, I2C1_SMBA, TIM16_BKIN, TIM3_CH2 alternate functions. |
| 58 | PB6 | bidirectional | Port B pin 6, configured as 5 V tolerant FM+ capable GPIO with I2C1_SCL, USART1_TX, TIM16_CH1N, TSC_G5_IO3 alternate functions. |
| 59 | PB7 | bidirectional | Port B pin 7, configured as 5 V tolerant FM+ capable GPIO with I2C1_SDA, USART1_RX, USART4_CTS, TIM17_CH1N, TSC_G5_IO4 alternate functions. |
| 60 | BOOT0 | input | Boot mode selection pin, selects boot from user Flash, system memory, or embedded SRAM at startup, voltage range 0 to 9 V. |
| 61 | PB8 | bidirectional | Port B pin 8, configured as 5 V tolerant FM+ capable GPIO with I2C1_SCL, CEC, TIM16_CH1, TSC_SYNC alternate functions. |
| 62 | PB9 | bidirectional | Port B pin 9, configured as 5 V tolerant FM+ capable GPIO with SPI2_NSS, I2S2_WS, I2C1_SDA, IR_OUT, TIM17_CH1 alternate functions. |
| 63 | VSS | power_in | Digital ground, must be connected to external power supply ground. |
| 64 | VDD | power_in | Digital power supply for internal logic and I/O, voltage range 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: `STM32F071RBT6`
- Footprint: `Package_QFP:LQFP-64_10x10mm_P0.5mm`
- 3D model: LQFP-64(10x10) (KiCad packages3D, STEP)
- 3D model files: `stm32f071rbt6-etched.step` / `stm32f071rbt6-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stm32f071rbt6.step` / `stm32f071rbt6.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586182549152808960) (122 pp, sha256 `38af2b847d34deba`, retrieved 2026-09-26, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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](docs/stm32f071rbt6-datasheet.pdf)