48 MHz Cortex-M0 with 256 KB Flash — the high-density entry point
The STM32F030CCT6 is a 32-bit microcontroller from ST's STM32F0 value line, built around the ARM Cortex-M0 core. The 48-LQFP package brings out 39 general-purpose I/Os, with peripherals including I²C, SPI, UART/USART, DMA, PWM, and a 12-channel 12-bit ADC.
Flash and RAM — sizing the firmware and data budget
256 KB of Flash is the high-density option in the STM32F030 family. The 32 KB RAM (organized as 32K x 8) supports moderate data buffers, stacks, and communication packet handling. For designs that fit in 64 KB or 128 KB Flash, the lower-density siblings (STM32F030C8T6, STM32F030C6T6) are cost-optimized alternatives — but this part avoids a mid-life Flash capacity crunch.
It is ROHS3 compliant per the listing.
Package and temperature — industrial-grade 48-LQFP
The 48-LQFP (7x7 mm body) is a common, easily solderable surface-mount package. With 39 I/Os available, you get good pin utilization — about 81% of the pins are usable as GPIO or peripheral I/O.