The 32-LQFP package (7x7 mm) exposes 29 I/Os, plus a 12-bit SAR ADC with 12 channels and two 12-bit DACs. Connectivity includes CANbus, I²C, SPI, UART/USART, USB, and HDMI-CEC — enough for a sensor hub, motor-control interface, or fieldbus node without external transceivers on most links.
512 KB Flash, 144 KB SRAM — sizing the firmware and data buffers
The 512 KB Flash gives room for a full application stack plus an OTA staging area if you partition it. The 144 KB SRAM handles moderate frame buffers, communication stacks, and real-time data without needing external RAM. The Cortex-M0+ core at 64 MHz means the flash wait state needs to be set correctly above the default — a common first-power gotcha that can cause hard faults on the first branch if overlooked.
STMicroelectronics lists the STM32G0B1KET6N as Active. If you are dual-sourcing, the STM32G0 series includes pin-compatible siblings with different Flash/SRAM densities — the base product number STM32G0B1 is the family anchor.