MCU core classification
1. Kernels such as 51/ARM/90/PIC/AVR..... There are many different kinds, not to mention the kernel is never classified, because every family can change the kernel, you should ask the architecture!! Only understand the architecture What kind of film is easy to use.
Let me talk about it in detail.
HARVARD architecture: ROM (program space) and RAM (data space) are separated, which facilitates simultaneous access of programs and data, reduces bottlenecks in program access, and improves data throughput.
PRINCETON (Princeton) architecture: the common use of ROMRAM in a common computer is a well-known von Neumann structure, program instruction storage address and data instruction storage address point to different locations in the same memory, so program instructions and data The same width.
For example: Take Intel as an example: MCS-51 uses Harvard architecture, and then the 16-bit MCS-96 is the Princeton architecture. ARM sells almost all of the kernels in Harvard architecture.
2. Does the PIC microcontroller and the AVR microcontroller are 51 cores?
No, have their own C compiler environment
3. Is the STC51 microcontroller the same as the assembly language of AT89S51?
The kernel and instruction set are the same
So rest assured
In addition, it is recommended that if you are not very demanding on the execution time when editing, try to use C language. After all, it is versatile and simple.
4. What is the core of the AVR microcontroller?
A: The AVR microcontroller core is the AVR core, which is different from the 51 kernel. If the kernel is the same, then its assembly instructions should be the same. In fact, their assembly instructions are completely different.
AVR is developed by ATMEL of the United States. ATMEL has three series of MCUs, one is the old-fashioned 8051 core MCU, and the second is the AVR MCU with AVR core. The third is the current high-end microprocessor with ARM core.
ARM is not as simple as a microcontroller, it is almost similar to a computer CPU. Now the CPU on the phone is AVR.
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