The ARM Cortex-M0 microcontroller, as featured in the STM32F0 series, is a 32-bit single-core processor that operates at a maximum frequency of 48 MHz. It has a substantial memory capacity, boasting 256 KB of flash memory, organized into 256 K x 8 bits. This chip adheres to a 64-WLCSP package with dimensions of approximately 3.35 mm by 3.59 mm.