STM32F411CEUx

The STM32F411CEU6 is a 32-bit ARM Cortex-M4 with hardware FPU from STMicroelectronics. Running at 100MHz with 512KB flash, 128KB SRAM, USB OTG, 3x SPI, 3x I2C, and 3x USART. Known as the "Black Pill" MCU with DSP instructions and floating-point support. UFQFPN-48 package.