@Stevens: "I am very interesting in bindng IoT and Engergy Harvesting". Perhaps we wouldn't have to wait too long for that as some power management chips targetted at energy harvesting as well as some ultra low porwer MCUs are readily available.
@ip2design: I can hardly see what is specific to IoT business. Any idea?
My understanding is that the M3 and M4-based MCUs, although extremely powerful and efficient, may be overkill (and consume too much power) for a lot of IoT applications. The C0+ based MCUs are more applicable to a wide range of IoT applications.
@ip2design: Thanks Max. That means that CPU throuput is far less critical than connectivity.
Well... I guess it sort of depends. Like many people, when I hear "IoT" I tend to think of hundreds of millions (billions, in the not-so-distant future) of teeny-weeny devices (small processors coupled with sensors and/or actuators) connected to the internet. In this case, connectivity and low power consumption will often trump raw processing power (the Cortex C0+ MCUs will score here).
However, the IoT isn't restricted to teeny-weeny devices -- there will be lots of other devices that are physically larger and/or do require more processing power (the Cortex M3/M4 MCUs will score here).
So I think Spansion's point of view is that the fact they offer 700+ processors spanning the M0+, M3, and M4 cores means they can address a wire range of IoT applications.
@Max: "The C0+ based MCUs are more applicable to a wide range of IoT applications". The concept of IoT is not limited to sensors all around wirelessly connected to a local network, it seems like it goes far beyond that limit.
I think we could expect even newer architectures with more processing power-per-mW and more power efficient communications interface technologies showing up soon.
As security is a concern in the IoT, crypto accelerators will most likely be a 'basic' feature/requirement for MCUs/SoCs targeted at IoT applications.
interesting interpretation of the FM acronym, flexible micontrollers...I think 99% people think frequency modulation...I would think every microcontroller is flexible by definition...and intersting enough they make 700 of them, so they are not that flexible after all!
I agree with @krisi "I would think every microcontroller is flexible by definition" and if you let me I would like to add one small detail... if it's running from FLASH/EEPROM and not from ROM masked at the factory or bricked with a static program code it is even more flexible.