Cortex-M4 at 80 MHz — signal-chain headroom
The STM32L443RCI6 runs an ARM Cortex-M4 core at 80 MHz, which gives it the throughput for real-time sensor fusion, motor-control loops, or audio processing without needing an external DSP. The 256 KB flash and 64 KB SRAM (64K x 8) leave room for a modest application stack plus data buffers — figure around 40 KB free after a lightweight RTOS and HAL, depending on peripheral usage.
Peripheral mix for mixed-signal systems
Connectivity includes CANbus, USB, QSPI, SAI (serial audio interface), and multiple I²C/SPI/UART ports — enough to bridge a sensor array, a display, and a fieldbus gateway on one chip. The 16-channel 12-bit ADC and dual 12-bit DAC handle analog front-end tasks without an external converter. Brown-out detect and reset, DMA, and a PWM timer round out the set for closed-loop control.