STM32G031K4U6 — 64 MHz Cortex-M0+ in a 5x5 mm package
The STM32G031K4U6 is a 32-bit ARM Cortex-M0+ microcontroller from STMicroelectronics' STM32G0 series, clocked at 64 MHz. It packs 16 KB of Flash and 8 KB of SRAM in a 5x5 mm package, with 30 available I/O lines. The part operates from 1.7 V to 3.6 V and is rated for -40 °C to 85 °C, making it suitable for factory automation, sensor nodes, and general-purpose embedded control where board space is tight.
On-chip peripherals include brown-out detect, POR, PWM, a watchdog timer, and a DMA controller.