Addressing method of microcontroller data memory and microcontroller
A technology of data memory and micro-controller, which is applied in the direction of memory address/allocation/relocation, machine execution device, etc. It can solve the problems of complex addressing program and low execution efficiency of microcontroller program, and achieve the effect of improving execution efficiency
Active Publication Date: 2015-10-21
SHANGHAI EASTSOFT MICROELECTRONICS
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[0009] The embodiment of the present invention provides a microcontroller data memory addressing method and a microcontroller, which are used to solve the problem in the prior art that the data memory addressing program is complicated, which in turn causes the execution efficiency of the microcontroller program to be low
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[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0026] The invention provides an addressing method for a microcontroller data memory, which can complete the data memory access without performing page operations on the page address register, and can complete the access within one machine cycle at the fastest, improving the The execution efficiency of the program is improved, and at least one ins...
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The invention provides an addressing method for a data storage of a microcontroller and a microcontroller. The method comprises the following steps of: decoding a command; obtaining a command operation code, an access enabling mark of a rapid data storage area and a low address value of a data storage area to be accessed, wherein the rapid data storage area is a continuous address space and at least comprises or is mapped with a special functional register; according to the enabling mark of the rapid data storage area, acquiring an address of the data storage area to be accessed; when the access enabling mark of the rapid data storage area indicates to access the rapid data storage area, combining a prestored high address value of the rapid data storage area, which is used as a high address value of the data storage area to be accessed, with the low address value of the data storage area to be accessed to obtain an address to be accessed. The microcontroller comprises an addressing circuit. The addressing circuit at least comprises a command decoding circuit and an address selecting circuit.
Description
technical field [0001] The invention relates to the field of microcontrollers, in particular to an addressing method for a microcontroller data memory and a microcontroller. Background technique [0002] A microcontroller is a single-chip microcomputer that integrates the main parts of a microcomputer on one chip. The microcontroller was born in the mid-1970s. After more than 20 years of development, its cost has become lower and lower, and its functions have become more powerful, which makes the application of microcontrollers more and more extensive. [0003] There are many types of microcontrollers currently in use, and a Reduced Instruction Set Computer (Reduced Instruction Set Computer, RISC for short) is a microprocessor that executes fewer types of computer instructions. Because the computer needs additional transistors and circuit elements to execute each instruction type, the larger the computer instruction set will make the microprocessor complex and the execution...
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IPC IPC(8): G06F12/02G06F9/30
Inventor 赵启山潘松朱世奇陈立权
Owner SHANGHAI EASTSOFT MICROELECTRONICS