STMicroelectronics STM32G0 series, STM32G031G4U6, 32-bit ARM Cortex-M0+ MCU, 64 MHz, 16 KB Flash, 8K x 8 RAM, 26 I/O, 1.7V-3.6V, 28-UFQFPN, -40°C to 85°C.
| Parameter | Value |
|---|---|
| Series | STM32G0 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.7V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 64MHz |
| Package | Tray |
| RAM size | 8K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT |
| Connectivity | I²C, IrDA, LINbus, SPI, UART/USART |
| Number of i (O) | 26 |
| Core processor | ARM® Cortex®-M0+ |
| Case | 28-UFQFN |
| Data converters | A/D 17x12b |
| Program memory size | 16KB (16K x 8) |
The 28-UFQFPN package (4x4 mm) and 26 I/O lines let you fit it on a two-layer board without signal-routing headaches.
If your design needs a DAC or USB, this part won't fit — step up to the STM32G0B1 or STM32L1 series for those peripherals.
ST's STM32G0 series is their mainstream low-cost platform, so volume allocation and lead times are generally stable through the authorized channel.
The STM32G031G8U6 doubles the Flash to 64 KB (64K x 8) while keeping the same 28-UFQFPN package, 26 I/O, and 64 MHz Cortex-M0+ core. The G4 variant's 16 KB Flash is the entry-level density; the G8 is the choice for firmware that needs more code space without a board respin.
The STM32G031G4U6 provides 26 I/O pins in the 28-UFQFPN package. That's enough for a handful of sensors, a small display, and a serial interface, but you'll need to mux peripherals carefully if you use more than one SPI or UART simultaneously.