Hello everyone, I am a ruffian scale, is a decent engage in technology riffraff. Today riffraff balance to introduce the ARM Cortex-M55 .
Year of the Rat Chinese New Year, we are always concerned about the development of the epidemic 2019nCoV, not too much thought to engage in technology, at this time, ARM quietly staged a big news, if you log on ARM developer website, you will find more than Cortex-M family a new member: Cortex-M55
The Cortex-M55 in the end what is backing? But before I have not heard ah! The name looks like Cortex-M33 / M35P brother, but maybe it could be Cortex-M7 brother, anyway, since the Cortex-M23 come out and do not understand what ARM named routine, in order to unlock the heart of doubt, let us to find out, in block diagram Cortex-M55 directly open:
Block Diagram At first glance it seems very innovative, core architecture is ARMv8.1-M mainline, look at the name like ARMv8-M mainline small upgrade (Level 4 lines changed from level 3, the performance should be a little upgrade, check to run sub do up from 4.02 CoreMark / MHz to 4.2 CoreMark / MHz), in addition to see TrustZone hold the line, that is the basic Cortex-M33 brother did not have to run. Let's go look Cortex-M55 Specific features:
This is basically to see to know what is backing Cortex-M55, Cortex-M55 introduced I / D-TCM and I / D-Cache support, high performance AXI5 change to the bus, this is like the Cortex-M7 move closer.
The most important thing is the Cortex-M55 adds a VPU (Helium), the original core of this is artificial intelligence (AI) / Machine Learning (ML) born that way. In fact, as early as last year, when ARMv8.1-M architecture has been published Arm Helium disclosed technology, this technology is Arm Cortex-M core M-Profile Vector Extensions, provides up to 15 times the performance of machine learning and up to 5 times signal processing capability, so that we can continue to use the M-core, without the need for higher performance processor architecture.
So AI microcontroller spring has really come, please look forward to it, and guess what MCU vendors will be the first mass production of this MCU core, the message to say your answer.