25 MHz — what it means for the BOM
The MSP430F5171IDAR: The 25 MHz CPU clock is the headline performance spec for this 16-bit core. It sets the timing budget for bus peripherals and real-time control loops: at 25 MHz, a single-cycle instruction executes in 40 ns. For applications like motor commutation or sensor polling, this is fast enough for most low-to-mid-speed control without needing a 32-bit core. The 32 KB Flash is sized for moderate firmware loads — think a field-programmable sensor hub or a simple motor drive — and the 2K x 8 RAM is tight for buffering; expect to manage data buffers carefully or use the DMA to offload the CPU.