The STM32F20x family is based on the high-performance ARM® Cortex®-M3 32-bit RISC
core operating at a frequency of up to 120 MHz. The family incorporates high-speed
embedded memories (Flash memory up to 1 Mbyte, up to 128 Kbytes of system SRAM), up
to 4 Kbytes of backup SRAM, and an extensive range of enhanced I/Os and peripherals
connected to two APB buses, three AHB buses and a 32-bit multi-AHB bus matrix.
The STM32F20x family PDF file refers to: STM32F030F4, STM32F030C6, STM32F030K6, STM32F030C8, STM32F030R8, STM32F030CC, STM32F030RC.