STMicroelectronics STM32F031G6U6, STM32F0 series, 32-bit ARM Cortex-M0 MCU, 48 MHz, 32 KB Flash, 4 KB SRAM, 23 I/O, 2V–3.6V supply, -40°C to 85°C, 28-UFQFN.
| Parameter | Value |
|---|---|
| Series | STM32F0 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 2V ~ 3.6V |
| Operating temperature | -40°C ~ 85°C (TA) |
| Speed | 48MHz |
| Package | Tray |
| RAM size | 4K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | DMA, I²S, POR, PWM, WDT |
| Connectivity | I²C, IrDA, LINbus, SPI, UART/USART |
| Number of i (O) | 23 |
| Core processor | ARM® Cortex®-M0 |
| Case | 28-UFQFN |
| Data converters | A/D 13x12b |
| Program memory size | 32KB (32K x 8) |
The 23 available I/O pins (in the 28-UFQFN package) leave enough headroom for a small keypad, LED indicators, and a serial debug header.
The base product number is STM32F031, and the series is STM32F0 — a broad, well-supported family with consistent tooling and documentation.
The 13-channel 12-bit ADC provides enough analog inputs for monitoring a few sensor voltages or potentiometers.
A functional alternative in the STM32 portfolio is the STM32L151CBU6A, which runs an ARM Cortex-M3 core at 32 MHz, offers more I/O (37), includes USB and dual DACs, and operates down to 1.8 V. It is not a pin-for-pin replacement — the package and peripheral set differ — but it serves as a higher-performance option when the application needs more memory or lower-voltage operation.