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Using the FRAM as though it were RAM on the msp430fr59xx chips can make it really easy to drive those ws281x chips even at a relatively slow MCU clock rate. The ws281x chips are great because you can get a boat load of leds for the cost of only one pin. Also, it doesn't hurt the price of these ws281x chips keeps falling and making them more and more attractive. I decided to see if I could take advantage of FRAM to help me drive some of those leds. I ended up with an extremely simple driver routine that works great even when you clock the FRAM MCU @ 6MHz. You couldn't really do this on a RA