component
STM32F031F4P6
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), TSSOP-20. Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads only if this page sits in the background.
PCB Footprint
Open full view ↗Loads on click. Unloads only if this page sits in the background.
Datasheet
Open in new tab ↗Loads on click. Unloads only if this page sits in the background.
README
markdownSTM32F031F4P6
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · TSSOP-20
STM32F031F4P6 from STMicroelectronics, in a TSSOP-20. 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 | BOOT0 | input | Dedicated boot-selection input (I/O structure type B) used with the boot-selector option bit at startup to choose between booting from user Flash, System memory (bootloader), or embedded SRAM; absolute maximum input voltage range is 0 to 9.0 V. |
| 2 | PF0 | bidirectional | 5V-tolerant (FT) general-purpose I/O PF0 (floating input after reset) that can alternatively be configured as OSC_IN, the input of the 4-32 MHz external HSE crystal/resonator or external clock source. |
| 3 | PF1 | bidirectional | 5V-tolerant (FT) general-purpose I/O PF1 (floating input after reset) that can alternatively be configured as OSC_OUT, the output of the 4-32 MHz external HSE crystal/resonator oscillator. |
| 4 | NRST | bidirectional | Bidirectional reset pin (RST structure) with an embedded weak pull-up resistor (typ. 40 kΩ); active-low external reset input and internal power-on/power-down reset output. |
| 5 | VDDA | power_in | External analog power supply pin for the ADC, reset block, RC oscillators and PLL; must be from VDD up to 3.6 V (minimum 2.4 V when the ADC is used) and must be established before or with VDD. |
| 6 | PA0 | bidirectional | 3.3V ADC-tolerant (TTa) I/O PA0 with alternate functions TIM2_CH1_ETR and USART1_CTS, and additional functions ADC_IN0, RTC_TAMP2 and WKUP1 (Standby-mode wakeup pin 1). |
| 7 | PA1 | bidirectional | TTa I/O PA1 with alternate functions TIM2_CH2, EVENTOUT and USART1_RTS, and additional function ADC_IN1. |
| 8 | PA2 | bidirectional | TTa I/O PA2 with alternate functions USART1_TX and TIM2_CH3, and additional function ADC_IN2. |
| 9 | PA3 | bidirectional | TTa I/O PA3 with alternate functions USART1_RX and TIM2_CH4, and additional function ADC_IN3. |
| 10 | PA4 | bidirectional | TTa I/O PA4 with alternate functions SPI1_NSS/I2S1_WS, USART1_CK and TIM14_CH1, and additional function ADC_IN4. |
| 11 | PA5 | bidirectional | TTa I/O PA5 with alternate functions SPI1_SCK/I2S1_CK and TIM2_CH1_ETR, and additional function ADC_IN5. |
| 12 | PA6 | bidirectional | TTa I/O PA6 with alternate functions SPI1_MISO/I2S1_MCK, TIM3_CH1, TIM1_BKIN, TIM16_CH1 and EVENTOUT, and additional function ADC_IN6. |
| 13 | PA7 | bidirectional | TTa I/O PA7 with alternate functions SPI1_MOSI/I2S1_SD, TIM3_CH2, TIM14_CH1, TIM1_CH1N, TIM17_CH1 and EVENTOUT, and additional function ADC_IN7. |
| 14 | PB1 | bidirectional | TTa I/O PB1 with alternate functions TIM3_CH4, TIM14_CH1 and TIM1_CH3N, and additional function ADC_IN9. |
| 15 | VSS | power_in | Ground pin; the TSSOP20 package has no separate VSSA pin, so per datasheet note (3) the VSSA pad of the die is internally connected to this VSS pin. |
| 16 | VDD | power_in | Digital power supply pin, 2.0 V to 3.6 V, for the I/O ring (VDDIO1) and the internal voltage regulator. |
| 17 | PA9 | bidirectional | 5V-tolerant, Fast-mode-Plus-capable (FTf) I/O PA9 with alternate functions USART1_TX, TIM1_CH2 and I2C1_SCL (I2C1 supports Fast Mode Plus up to 1 Mbit/s with 20 mA sink on this pin). |
| 18 | PA10 | bidirectional | FTf I/O PA10 with alternate functions USART1_RX, TIM1_CH3, TIM17_BKIN and I2C1_SDA (I2C1 supports Fast Mode Plus up to 1 Mbit/s with 20 mA sink on this pin). |
| 19 | PA13 | bidirectional | 5V-tolerant (FT) I/O PA13 with alternate functions IR_OUT and SWDIO; per note (5), after reset this pin defaults to the SWDIO alternate function with its internal pull-up resistor activated. |
| 20 | PA14 | bidirectional | FT I/O PA14 with alternate functions USART1_TX and SWCLK; per note (5), after reset this pin defaults to the SWCLK alternate function with its internal pull-down resistor activated. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | TSSOP-20 |
| Category | Embedded Processors & Controllers |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
STM32F031F4P6 - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
stm32f031f4p6-etched.step/stm32f031f4p6-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32f031f4p6.step/stm32f031f4p6.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (106 pp, sha256
36b17e3dce795273, retrieved 2026-09-24, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).