ARM products are becoming more and more abundant, and there are more and more names. Many friends ask questions: What does the ARM core and architecture mean? What is the relationship between the core and the architecture? For example, the ARMv7 architecture, what does this architecture refer to? I have compiled a few professional concepts for everyone! Hope to embed friends It is helpful when choosing a design circuit~ 1. ARM core: from ARM7, ARM9 to Cortex-A7, A8, A9, A12, A15 to Cortex-A53, A57, etc., in short, different versions of ARM have different ideas. For example, Cortex A8 and A9 designed for high speed are both ARMv7a architecture; Cortex M3 and M4 are ARMv7m architecture; the former is the core and the latter is the instruction set architecture. 2. ARM's architecture is based on the RISC instruction set, and its core is only the basis of the hardware architecture that implements this instruction set. A subset of the Thumb-2 instruction set architecture (ISA) includes all the basic 16-bit and 32-bit Thumb-2 instructions,, Harvard processor architecture, can execute instruction fetching while loading/storing data, three-stage pipeline with branch prediction, etc. 3. It's like building a house. At first, building a bungalow was popular because of its low level. This is a kind of architecture (V5T). Then, with this bungalow architecture, you can design a style of independent bathroom, which is called the ARM7 core. Then other people (chip design companies) who want to build a house buy this drawing from you to build it. After a while, some people think that the independent bathroom is not enough. I also want to have a small yard! Well, then ARM will satisfy you According to the requirements, a style with a small yard (ARM9) is available. After a long time, the architecture of this bungalow has been changed and changed according to the needs of everyone. Later, after research by ARM, it was found that the ability of everyone to build a house has increased directly (including craftsmanship, design ability, clock frequency) , Just build this kind of bungalow and can’t open it! Well, in order to keep these designers from idle, ARM has introduced a two- and three-story building style, because it is completely different from the design of a bungalow, then Called a new architecture (ARMv6), the same building style ARM has also prepared models with swimming pools and garages (ARM11) for everyone. A building with more than ten floors. ARM, as always, has released a new style (ARMv7 architecture). At this time, ARM felt that the previous names were too vulgar, what ARM5, ARM6, ARM7-ugly and hard to remember, I want to choose a name that looks awesome, let's at least It can be considered a master who can design skyscrapers, so the kernel behind it is called Cortex. The name change is only part of it. With the development of this architecture, ARM found that the building previously built with our drawings will also be a private house. What is the picture of the private house? It is affordable (low power consumption). Now it’s different. Now the buildings built by our drawings can be used not only as civilian houses, but also as military bases, and as high-end office buildings. In the past, only Xiaoying (Intel) could design these buildings with advanced functions! In order to satisfy For these different needs, ARM divides the styles designed by this architecture into 3 series (M series, R series, A series). The M series is designed for private houses, because the common people’s picture is affordable, this design is designed for about ten floors (low power consumption); the R series is designed for military bases, and the design of this kind of building is not high—about ten floors. Right, but the key is to have the ability to respond quickly to special situations (fast interruption); Finally, the A series is for business leaders. Of course, it needs to be high-end and high-end, that is, high performance, various LED lights. Show me all. SHAOXING COLORBEE PLASTIC CO.,LTD , https://www.fantaicolorbee.com