Correspondence between STM32 model and contex M

Cortex-M kernel M0,M0+,M3,M4,M7 The difference between

Picture from www.stmcu.com.cn
high-performance High performance
Mainstream Main stream
Ultra-low-power low power consumption

Knowledge subsidies ：
The reason ARM The company will Cortex-M Divided into so many series , Mainly for different application fields ; Here is a detailed introduction ：

Cortex-M It is divided into ：M0,M0+,M3,M4,M7

M0,M0+： Basic version , It can be seen from the picture that , There is too much foundation , So we can't produce high-performance STM32 The single chip computer of ;
M3： At present, the most mainstream design kernel selection , Wide application ;

M4： Compare M3 In terms of kernel ,M4 The processor adds DSP The data of （ It can be regarded as floating point number ） Instructions to process ; Let's focus on it ： about CPU（ No SOC） Come on , It is troublesome to operate on floating-point data , When selecting the model , For example, when the application field requires a large number of floating-point data operations , Then choose M4 The kernel of ,M4 It will greatly improve the processor performance and computing speed , If there is not much floating-point data to be processed , You can directly choose M3 The kernel processor ; For example, when the project is a balance car or balancer M4 better ;

M7： Good performance and high power consumption , Suitable for projects pursuing extreme performance ;

It can be said that ： The greater the number , The higher the performance ;