80 MHz Cortex-M4 with 256 KB flash — throughput and memory for control applications
The STM32L451VCT6 is an STM32L4-series microcontroller built around an ARM Cortex-M4 core running at 80 MHz. That clock rate, combined with the single-cycle multiply and hardware FPU, handles real-time control loops and sensor fusion without a separate DSP. On-chip memory is 256 KB of flash and 160 KB of SRAM — enough headroom for a FreeRTOS application with a TCP/IP stack and a moderate data buffer. The 83 general-purpose I/O lines, mapped to the 100-LQFP package, give plenty of pins for parallel buses or multiple UART/SPI/I2C peripherals.
Peripheral set and connectivity — CAN, QSPI, SAI, multiple serial interfaces
The QSPI interface lets you memory-map an external serial flash or PSRAM for code execution or data logging without chewing up GPIO for a parallel bus. The 16-channel 12-bit ADC and single 12-bit DAC cover analog front-end needs — reading multiple sensor inputs and outputting an analog control signal from the same chip. The DMA engine offloads the CPU for peripheral-to-memory transfers, which matters when the 80 MHz core is also running the application stack.
It is surface-mount only — no socket option — so the board assembly profile must match the LQFP reflow requirements. The tray packaging means the parts arrive in antistatic trays, not tape-and-reel, which affects pick-and-place feeder setup.
Sourced through authorized and independent distribution channels.