STM32F100RCT6B STM32F100 MCU 32-bit ARM Cortex M3 RISC 256KB Flash 2.5V/3.3V 64-Pin LQFP new original
https://www.vogueparade.com/shopping/EN/4003/1/1005002891589570/stm32f100rct6b-stm32f100-mcu-32-bit-arm-cortex-m3-risc-256kb-flash-25v33v-64-pin-lqfp-new-original//