8-bit RISC microcontroller with double arithmetic logic units

Abstract

The invention discloses a double arithmetic logic unit tamping instruction set 8 bit microcontroller. It adopts the current register pile and arithmetic logic unit ALU-1 of the 8 bit RISC structure and parallel connects with the multi-function register pile and arithmetic logic unit ALU-2, it arranges the bit holder and bit operating quoting device inside the order decoder of the initial RISC structure and the bite operator structure on the current arithmetic logic unit ALU-1, then it adds the operating function and the data processing function to the multi-byte data of the 8 bit microcontroller and provides the register address mode of the data space and amplifies the data address space by coupling the multi-function register pile and the arithmetic logic unit ALU-2.

Description

technical field [0001] The invention relates to the technical field of general microcontroller (MCU) structure, in particular to an 8-bit microcontroller with double arithmetic logic unit (ALU) reduced instruction set (RISC). Applicable to personal digital terminal PDA, electronic book, electronic dictionary, tablet, MP3, industrial control and other fields. Background technique: [0002] With the development of semiconductor technology, the scale of integrated circuits is getting larger and higher, and the integration level is getting higher and higher. Microcontrollers and their related memories such as flash memory (Flash Memory), electrically erasable memory (E 2 PROM), static random access memory (SRAM), etc., and peripheral logic controllers can be integrated in large quantities on the same chip. The RISC design structure and powerful electronic design automation (EDA) methods make the designer's work more effective and programming easier, which further promotes the d...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of existing 8-bit microcontrollers with small storage space and low data processing speed, and provide an 8-bit microcontroller with a double arithmetic logic unit RISC structure to fully expand the data of 8-bit microcontrollers. space, and add part of the 16-bit arithmetic instruction processing capability and single-cycle bit operation capability to the 8-bit microcontroller, improve the computing performance of the 8-bit microcontroller, and form a large data volume suitable for PDA, e-books, electronic dictionaries, MP3, etc. , a high-performance embedded microprocessor for high-speed applications

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