These days you may as well use a 32bit micro, in terms of cost, toolchain and silicon ability. The extra dollar you spend on those 16bits easily pays for itsel

These days you may as well use a 32bit micro, in terms of cost, toolchain and silicon ability. The extra dollar you spend on those 16bits easily pays for itself in the extra features you often get with modern 32bit micros. Especially something like this where you might want to do relatively complex maths / algorithms. e.g. see the stm32 family