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STM32F031C6T6TR
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STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Datasheet-verified pinout, 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
markdownSTM32F031C6T6TR
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)
STM32F031C6T6TR 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 for RTC and backup registers, 1.65 to 3.6 V |
| 2 | PC13 | bidirectional | General-purpose I/O Port C bit 13, 3.3 V tolerant, can serve as RTC tamper input or external wakeup source |
| 3 | PC14-OSC32_IN | bidirectional | Low-speed external oscillator input for 32 kHz crystal, 3.3 V tolerant |
| 4 | PC15-OSC32_OUT | bidirectional | Low-speed external oscillator output for 32 kHz crystal, 3.3 V tolerant |
| 5 | PF0-OSC_IN | bidirectional | High-speed external oscillator input for 4 to 32 MHz crystal, 5V-tolerant I/O |
| 6 | PF1-OSC_OUT | bidirectional | High-speed external oscillator output for 4 to 32 MHz crystal, 5V-tolerant I/O |
| 7 | NRST | bidirectional | Active-low device reset input with internal weak pull-up resistor, accepts external reset signals |
| 8 | VSSA | power_in | Analog ground supply, must be connected to external power supply ground |
| 9 | VDDA | power_in | Analog power supply, 2.4 to 3.6 V when ADC is used, must be greater than or equal to VDD |
| 10 | PA0 | bidirectional | General-purpose I/O Port A bit 0, 3.3 V tolerant with ADC connection, configurable for Timer2 or USART1 |
| 11 | PA1 | bidirectional | General-purpose I/O Port A bit 1, 3.3 V tolerant with ADC connection, configurable for Timer2 or USART1 |
| 12 | PA2 | bidirectional | General-purpose I/O Port A bit 2, 3.3 V tolerant with ADC connection, configurable for USART1 transmit |
| 13 | PA3 | bidirectional | General-purpose I/O Port A bit 3, 3.3 V tolerant with ADC connection, configurable for USART1 receive |
| 14 | PA4 | bidirectional | General-purpose I/O Port A bit 4, 3.3 V tolerant with ADC connection, configurable for SPI1 or Timer14 |
| 15 | PA5 | bidirectional | General-purpose I/O Port A bit 5, 3.3 V tolerant with ADC connection, configurable for SPI1 clock |
| 16 | PA6 | bidirectional | General-purpose I/O Port A bit 6, 3.3 V tolerant with ADC connection, configurable for SPI1 MISO or timers |
| 17 | PA7 | bidirectional | General-purpose I/O Port A bit 7, 3.3 V tolerant with ADC connection, configurable for SPI1 MOSI or timers |
| 18 | PB0 | bidirectional | General-purpose I/O Port B bit 0, 3.3 V tolerant with ADC connection, configurable for Timer3 or Timer1 |
| 19 | PB1 | bidirectional | General-purpose I/O Port B bit 1, 3.3 V tolerant with ADC connection, configurable for Timer3 or Timer14 |
| 20 | PB2 | bidirectional | General-purpose I/O Port B bit 2, 5V-tolerant I/O, treated as unconnected on LQFP32 variant |
| 21 | PB10 | bidirectional | General-purpose I/O Port B bit 10, 5V-tolerant Fast Mode Plus capable, configurable for Timer2 or I2C1 clock |
| 22 | PB11 | bidirectional | General-purpose I/O Port B bit 11, 5V-tolerant Fast Mode Plus capable, configurable for Timer2 or I2C1 data |
| 23 | VSS | power_in | Digital ground supply, must be connected to external power supply ground |
| 24 | VDD | power_in | Digital power supply, 2.0 to 3.6 V, must be bypassed with ceramic capacitors as specified |
| 25 | PB12 | bidirectional | General-purpose I/O Port B bit 12, 5V-tolerant I/O, configurable for Timer1 or SPI1 |
| 26 | PB13 | bidirectional | General-purpose I/O Port B bit 13, 5V-tolerant I/O, configurable for Timer1 or SPI1 clock |
| 27 | PB14 | bidirectional | General-purpose I/O Port B bit 14, 5V-tolerant I/O, configurable for Timer1 or SPI1 MISO |
| 28 | PB15 | bidirectional | General-purpose I/O Port B bit 15, 5V-tolerant I/O, configurable for Timer1 or SPI1 MOSI |
| 29 | PA8 | bidirectional | General-purpose I/O Port A bit 8, 5V-tolerant I/O, configurable for USART1 clock or Timer1 channel 1 |
| 30 | PA9 | bidirectional | General-purpose I/O Port A bit 9, 5V-tolerant Fast Mode Plus capable, configurable for USART1 transmit or Timer1 |
| 31 | PA10 | bidirectional | General-purpose I/O Port A bit 10, 5V-tolerant Fast Mode Plus capable, configurable for USART1 receive or Timer1 |
| 32 | PA11 | bidirectional | General-purpose I/O Port A bit 11, 5V-tolerant I/O, configurable for USART1 clear-to-send or Timer1 |
| 33 | PA12 | bidirectional | General-purpose I/O Port A bit 12, 5V-tolerant I/O, configurable for USART1 ready-to-send or Timer1 |
| 34 | PA13 (SWDIO) | bidirectional | Serial Wire Debug Data I/O, 5V-tolerant I/O with internal pull-up resistor activated after reset |
| 35 | PF6 | bidirectional | General-purpose I/O Port F bit 6, 5V-tolerant Fast Mode Plus capable, configurable for I2C1 clock |
| 36 | PF7 | bidirectional | General-purpose I/O Port F bit 7, 5V-tolerant Fast Mode Plus capable, configurable for I2C1 data |
| 37 | PA14 (SWCLK) | bidirectional | Serial Wire Debug Clock, 5V-tolerant I/O with internal pull-down resistor activated after reset |
| 38 | PA15 | bidirectional | General-purpose I/O Port A bit 15, 5V-tolerant I/O, configurable for SPI1 or Timer2 external trigger |
| 39 | PB3 | bidirectional | General-purpose I/O Port B bit 3, 5V-tolerant I/O, configurable for SPI1 clock or Timer2 channel 2 |
| 40 | PB4 | bidirectional | General-purpose I/O Port B bit 4, 5V-tolerant I/O, configurable for SPI1 MISO or Timer3 channel 1 |
| 41 | PB5 | bidirectional | General-purpose I/O Port B bit 5, 5V-tolerant I/O, configurable for SPI1 MOSI or I2C1 SMBus alert |
| 42 | PB6 | bidirectional | General-purpose I/O Port B bit 6, 5V-tolerant Fast Mode Plus capable, configurable for I2C1 clock or USART1 |
| 43 | PB7 | bidirectional | General-purpose I/O Port B bit 7, 5V-tolerant Fast Mode Plus capable, configurable for I2C1 data or USART1 |
| 44 | BOOT0 | input | Dedicated boot mode selection pin, determines boot from Flash memory or System Memory, logic level 0-9 V |
| 45 | PB8 | bidirectional | General-purpose I/O Port B bit 8, 5V-tolerant Fast Mode Plus capable, configurable for I2C1 clock or Timer16 |
| 46 | PB9 | bidirectional | General-purpose I/O Port B bit 9, 5V-tolerant Fast Mode Plus capable, configurable for I2C1 data or Timer17 |
| 47 | VSS | power_in | Digital ground supply, must be connected to external power supply ground |
| 48 | VDD | power_in | Digital power supply, 2.0 to 3.6 V, must be bypassed with ceramic capacitors as specified |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-48(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 48 |
CAD (KiCad official)
- Symbol:
STM32F031C6T6TR - Footprint:
Package_QFP:LQFP-48_7x7mm_P0.5mm - 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
- 3D model files:
stm32f031c6t6tr-etched.step/stm32f031c6t6tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32f031c6t6tr.step/stm32f031c6t6tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (106 pp, sha256
36b17e3dce795273, retrieved 2026-09-23, 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).