80 MHz Cortex-M4 with FPU — signal-chain ready
The STM32L452REI3: The 80 MHz core with hardware FPU and DSP extensions lets this part run real-time sensor fusion, audio filtering, or motor-control loops without an external coprocessor. The 512 KB Flash and 160 KB RAM provide enough space for a full RTOS, a communication stack, and a data-logging buffer. The 12-bit ADC with 16 channels covers multi-axis analog inputs, and the single 12-bit DAC handles analog set-point or waveform generation.
STMicroelectronics lists the STM32L452REI3 as Active.
The 64-ball UFBGA (5×5 mm) is a fine-pitch, low-profile BGA suited for space-constrained designs.