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STM32L031C6T7
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.
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STM32L031C6T7
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)
STM32L031C6T7 from STMicroelectronics, in a LQFP-48(7x7). 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 | PC0 | bidirectional | 5 V tolerant (FT) I/O with alternate functions LPTIM1_IN1, EVENTOUT and LPUART1_RX. |
| 2 | PC13 | bidirectional | 5 V tolerant (FT) I/O with ANTI_TAMP pin function and TAMP1/WKUP2 additional function. |
| 3 | PC14 | bidirectional | Standard 3.3 V (TC) I/O with OSC32_IN (32 kHz oscillator input) pin function. |
| 4 | PC15 | bidirectional | Standard 3.3 V (TC) I/O with OSC32_OUT (32 kHz oscillator output) pin function. |
| 5 | PH0 | bidirectional | Standard 3.3 V (TC) I/O with OSC_IN pin function. |
| 6 | PH1 | bidirectional | Standard 3.3 V (TC) I/O with OSC_OUT pin function. |
| 7 | NRST | bidirectional | Bidirectional reset pin with embedded weak pull-up resistor. |
| 8 | VSSA | power_in | Analog ground pin; all voltages are referenced to VSS. |
| 9 | VDDA | power_in | Analog supply pin. |
| 10 | PA0 | bidirectional | Standard 3.3 V (TC) I/O with ADC_IN0, COMP1_INM6 and RTC_TAMP2/WKUP1 additional functions; alternate functions include LPTIM1_IN1, TIM2_CH1, USART2_CTS and COMP1_OUT. |
| 11 | PA1 | bidirectional | 5 V tolerant (FT) I/O with ADC_IN1 and COMP1_INP additional functions; alternate functions include EVENTOUT, LPTIM1_IN2, TIM2_CH2 and USART2_RTS/USART2_DE. |
| 12 | PA2 | bidirectional | Standard 3.3 V (TC) I/O with ADC_IN2, COMP2_INM6 and RTC_TAMP3/RTC_TS/RTC_OUT/WKUP3 additional functions; alternate functions include USART2_TX and LPUART1_TX. |
| 13 | PA3 | bidirectional | 5 V tolerant (FT) I/O with ADC_IN3 and COMP2_INP additional functions; alternate functions include USART2_RX and LPUART1_RX. |
| 14 | PA4 | bidirectional | Standard 3.3 V (TC) I/O with ADC_IN4, COMP1_INM4 and COMP2_INM4 additional functions; alternate functions include SPI1_NSS and USART2_CK. |
| 15 | PA5 | bidirectional | Standard 3.3 V (TC) I/O with ADC_IN5, COMP1_INM5 and COMP2_INM5 additional functions; alternate functions include SPI1_SCK and TIM2_CH1. |
| 16 | PA6 | bidirectional | 5 V tolerant (FT) I/O with ADC_IN6 additional function; alternate functions include SPI1_MISO, LPUART1_CTS and COMP1_OUT. |
| 17 | PA7 | bidirectional | 5 V tolerant (FT) I/O with ADC_IN7 additional function; alternate functions include SPI1_MOSI, USART2_CTS and COMP2_OUT. |
| 18 | PB0 | bidirectional | 5 V tolerant (FT) I/O with ADC_IN8 and VREF_OUT additional functions; alternate functions include SPI1_MISO and USART2_RTS/USART2_DE. |
| 19 | PB1 | bidirectional | 5 V tolerant (FT) I/O with ADC_IN9 and VREF_OUT additional functions; alternate functions include USART2_CK, SPI1_MOSI and LPUART1_RTS/LPUART1_DE. |
| 20 | PB2 | bidirectional | 5 V tolerant (FT) I/O; alternate function LPTIM1_OUT. |
| 21 | PB10 | bidirectional | 5 V tolerant (FT) I/O; alternate functions TIM2_CH3 and LPUART1_TX. |
| 22 | PB11 | bidirectional | 5 V tolerant (FT) I/O; alternate functions EVENTOUT, TIM2_CH4 and LPUART1_RX. |
| 23 | VSS | power_in | Ground supply pin (VSS). |
| 24 | VDD | power_in | Supply pin (VDD). |
| 25 | PB12 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SPI1_NSS and EVENTOUT. |
| 26 | PB13 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SPI1_SCK, MCO, TIM21_CH1 and LPUART1_CTS. |
| 27 | PB14 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SPI1_MISO, RTC_OUT, TIM21_CH2 and LPUART1_RTS/LPUART1_DE. |
| 28 | PB15 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SPI1_MOSI and RTC_REFIN. |
| 29 | PA8 | bidirectional | 5 V tolerant (FT) I/O; alternate functions MCO, LPTIM1_IN1, EVENTOUT, USART2_CK and TIM2_CH1. |
| 30 | PA9 | bidirectional | 5 V tolerant (FTf) I/O with Fast Mode Plus capability; alternate functions MCO, I2C1_SCL, USART2_TX and TIM22_CH1. |
| 31 | PA10 | bidirectional | 5 V tolerant (FTf) I/O with Fast Mode Plus capability; alternate functions I2C1_SDA, USART2_RX and TIM22_CH2. |
| 32 | PA11 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SPI1_MISO, EVENTOUT, USART2_CTS, TIM21_CH2 and COMP1_OUT. |
| 33 | PA12 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SPI1_MOSI, EVENTOUT, USART2_RTS/USART2_DE and COMP2_OUT. |
| 34 | PA13 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SWDIO, LPTIM1_ETR and LPUART1_RX. |
| 35 | VSS | power_in | Ground supply pin (VSS). |
| 36 | VDD | power_in | Supply pin (VDD). |
| 37 | PA14 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SWCLK, LPTIM1_OUT, I2C1_SMBA, USART2_TX and LPUART1_TX. |
| 38 | PA15 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SPI1_NSS, TIM2_ETR, EVENTOUT, USART2_RX and TIM2_CH1. |
| 39 | PB3 | bidirectional | 5 V tolerant (FT) I/O with COMP2_INN additional function; alternate functions include SPI1_SCK, TIM2_CH2 and EVENTOUT. |
| 40 | PB4 | bidirectional | 5 V tolerant (FT) I/O with COMP2_INP additional function; alternate functions include SPI1_MISO, EVENTOUT and TIM22_CH1. |
| 41 | PB5 | bidirectional | 5 V tolerant (FT) I/O with COMP2_INP additional function; alternate functions include SPI1_MOSI, LPTIM1_IN1, I2C1_SMBA and TIM22_CH2. |
| 42 | PB6 | bidirectional | 5 V tolerant (FTf) I/O with Fast Mode Plus capability and COMP2_INP additional function; alternate functions include USART2_TX, I2C1_SCL, LPTIM1_ETR and TIM21_CH1. |
| 43 | PB7 | bidirectional | 5 V tolerant (FTf) I/O with Fast Mode Plus capability and COMP2_INP and VREF_PVD_IN additional functions; alternate functions include USART2_RX, I2C1_SDA and LPTIM1_IN2. |
| 44 | BOOT0 | input | Dedicated BOOT0 input pin. |
| 45 | PB8 | bidirectional | 5 V tolerant (FTf) I/O with Fast Mode Plus capability; alternate function I2C1_SCL. |
| 46 | PB9 | bidirectional | 5 V tolerant (FTf) I/O with Fast Mode Plus capability; alternate functions EVENTOUT and I2C1_SDA. |
| 47 | VSS | power_in | Ground supply pin (VSS). |
| 48 | VDD | power_in | Supply pin (VDD). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-48(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 48 |
CAD (KiCad official)
- Symbol:
STM32L031C6T7 - Footprint:
Package_QFP:LQFP-48_7x7mm_P0.5mm - 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
- 3D model files:
stm32l031c6t7-etched.step/stm32l031c6t7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32l031c6t7.step/stm32l031c6t7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (126 pp, sha256
9726c48418e03f62, retrieved 2026-10-08, 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).
# STM32L031C6T7
**STMicroelectronics** · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)
STM32L031C6T7 from STMicroelectronics, in a LQFP-48(7x7). 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 | PC0 | bidirectional | 5 V tolerant (FT) I/O with alternate functions LPTIM1_IN1, EVENTOUT and LPUART1_RX. |
| 2 | PC13 | bidirectional | 5 V tolerant (FT) I/O with ANTI_TAMP pin function and TAMP1/WKUP2 additional function. |
| 3 | PC14 | bidirectional | Standard 3.3 V (TC) I/O with OSC32_IN (32 kHz oscillator input) pin function. |
| 4 | PC15 | bidirectional | Standard 3.3 V (TC) I/O with OSC32_OUT (32 kHz oscillator output) pin function. |
| 5 | PH0 | bidirectional | Standard 3.3 V (TC) I/O with OSC_IN pin function. |
| 6 | PH1 | bidirectional | Standard 3.3 V (TC) I/O with OSC_OUT pin function. |
| 7 | NRST | bidirectional | Bidirectional reset pin with embedded weak pull-up resistor. |
| 8 | VSSA | power_in | Analog ground pin; all voltages are referenced to VSS. |
| 9 | VDDA | power_in | Analog supply pin. |
| 10 | PA0 | bidirectional | Standard 3.3 V (TC) I/O with ADC_IN0, COMP1_INM6 and RTC_TAMP2/WKUP1 additional functions; alternate functions include LPTIM1_IN1, TIM2_CH1, USART2_CTS and COMP1_OUT. |
| 11 | PA1 | bidirectional | 5 V tolerant (FT) I/O with ADC_IN1 and COMP1_INP additional functions; alternate functions include EVENTOUT, LPTIM1_IN2, TIM2_CH2 and USART2_RTS/USART2_DE. |
| 12 | PA2 | bidirectional | Standard 3.3 V (TC) I/O with ADC_IN2, COMP2_INM6 and RTC_TAMP3/RTC_TS/RTC_OUT/WKUP3 additional functions; alternate functions include USART2_TX and LPUART1_TX. |
| 13 | PA3 | bidirectional | 5 V tolerant (FT) I/O with ADC_IN3 and COMP2_INP additional functions; alternate functions include USART2_RX and LPUART1_RX. |
| 14 | PA4 | bidirectional | Standard 3.3 V (TC) I/O with ADC_IN4, COMP1_INM4 and COMP2_INM4 additional functions; alternate functions include SPI1_NSS and USART2_CK. |
| 15 | PA5 | bidirectional | Standard 3.3 V (TC) I/O with ADC_IN5, COMP1_INM5 and COMP2_INM5 additional functions; alternate functions include SPI1_SCK and TIM2_CH1. |
| 16 | PA6 | bidirectional | 5 V tolerant (FT) I/O with ADC_IN6 additional function; alternate functions include SPI1_MISO, LPUART1_CTS and COMP1_OUT. |
| 17 | PA7 | bidirectional | 5 V tolerant (FT) I/O with ADC_IN7 additional function; alternate functions include SPI1_MOSI, USART2_CTS and COMP2_OUT. |
| 18 | PB0 | bidirectional | 5 V tolerant (FT) I/O with ADC_IN8 and VREF_OUT additional functions; alternate functions include SPI1_MISO and USART2_RTS/USART2_DE. |
| 19 | PB1 | bidirectional | 5 V tolerant (FT) I/O with ADC_IN9 and VREF_OUT additional functions; alternate functions include USART2_CK, SPI1_MOSI and LPUART1_RTS/LPUART1_DE. |
| 20 | PB2 | bidirectional | 5 V tolerant (FT) I/O; alternate function LPTIM1_OUT. |
| 21 | PB10 | bidirectional | 5 V tolerant (FT) I/O; alternate functions TIM2_CH3 and LPUART1_TX. |
| 22 | PB11 | bidirectional | 5 V tolerant (FT) I/O; alternate functions EVENTOUT, TIM2_CH4 and LPUART1_RX. |
| 23 | VSS | power_in | Ground supply pin (VSS). |
| 24 | VDD | power_in | Supply pin (VDD). |
| 25 | PB12 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SPI1_NSS and EVENTOUT. |
| 26 | PB13 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SPI1_SCK, MCO, TIM21_CH1 and LPUART1_CTS. |
| 27 | PB14 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SPI1_MISO, RTC_OUT, TIM21_CH2 and LPUART1_RTS/LPUART1_DE. |
| 28 | PB15 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SPI1_MOSI and RTC_REFIN. |
| 29 | PA8 | bidirectional | 5 V tolerant (FT) I/O; alternate functions MCO, LPTIM1_IN1, EVENTOUT, USART2_CK and TIM2_CH1. |
| 30 | PA9 | bidirectional | 5 V tolerant (FTf) I/O with Fast Mode Plus capability; alternate functions MCO, I2C1_SCL, USART2_TX and TIM22_CH1. |
| 31 | PA10 | bidirectional | 5 V tolerant (FTf) I/O with Fast Mode Plus capability; alternate functions I2C1_SDA, USART2_RX and TIM22_CH2. |
| 32 | PA11 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SPI1_MISO, EVENTOUT, USART2_CTS, TIM21_CH2 and COMP1_OUT. |
| 33 | PA12 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SPI1_MOSI, EVENTOUT, USART2_RTS/USART2_DE and COMP2_OUT. |
| 34 | PA13 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SWDIO, LPTIM1_ETR and LPUART1_RX. |
| 35 | VSS | power_in | Ground supply pin (VSS). |
| 36 | VDD | power_in | Supply pin (VDD). |
| 37 | PA14 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SWCLK, LPTIM1_OUT, I2C1_SMBA, USART2_TX and LPUART1_TX. |
| 38 | PA15 | bidirectional | 5 V tolerant (FT) I/O; alternate functions SPI1_NSS, TIM2_ETR, EVENTOUT, USART2_RX and TIM2_CH1. |
| 39 | PB3 | bidirectional | 5 V tolerant (FT) I/O with COMP2_INN additional function; alternate functions include SPI1_SCK, TIM2_CH2 and EVENTOUT. |
| 40 | PB4 | bidirectional | 5 V tolerant (FT) I/O with COMP2_INP additional function; alternate functions include SPI1_MISO, EVENTOUT and TIM22_CH1. |
| 41 | PB5 | bidirectional | 5 V tolerant (FT) I/O with COMP2_INP additional function; alternate functions include SPI1_MOSI, LPTIM1_IN1, I2C1_SMBA and TIM22_CH2. |
| 42 | PB6 | bidirectional | 5 V tolerant (FTf) I/O with Fast Mode Plus capability and COMP2_INP additional function; alternate functions include USART2_TX, I2C1_SCL, LPTIM1_ETR and TIM21_CH1. |
| 43 | PB7 | bidirectional | 5 V tolerant (FTf) I/O with Fast Mode Plus capability and COMP2_INP and VREF_PVD_IN additional functions; alternate functions include USART2_RX, I2C1_SDA and LPTIM1_IN2. |
| 44 | BOOT0 | input | Dedicated BOOT0 input pin. |
| 45 | PB8 | bidirectional | 5 V tolerant (FTf) I/O with Fast Mode Plus capability; alternate function I2C1_SCL. |
| 46 | PB9 | bidirectional | 5 V tolerant (FTf) I/O with Fast Mode Plus capability; alternate functions EVENTOUT and I2C1_SDA. |
| 47 | VSS | power_in | Ground supply pin (VSS). |
| 48 | VDD | power_in | Supply pin (VDD). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-48(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 48 |
## CAD (KiCad official)
- Symbol: `STM32L031C6T7`
- Footprint: `Package_QFP:LQFP-48_7x7mm_P0.5mm`
- 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
- 3D model files: `stm32l031c6t7-etched.step` / `stm32l031c6t7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stm32l031c6t7.step` / `stm32l031c6t7.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/8588922356249341952) (126 pp, sha256 `9726c48418e03f62`, retrieved 2026-10-08, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/stm32l031c6t7-datasheet.pdf)