Single-chip microcomputer system clock frequency control method and system

Abstract

The invention provides a single-chip microcomputer system clock frequency control method. According to the method, after a single-chip microcomputer system is powered on and started, the single-chip microcomputer system is controlled to operate under a low clock frequency; after operating voltage of the single-chip microcomputer system stabilizes, the system is controlled to operate under a normal clock frequency. System disorder and crash caused by sudden voltage drop caused by short-term excessively-high current consumption during the startup process is avoided effectively, and startup power consumption is reduced and cut effectively. The invention further provides a single-chip microcomputer system clock frequency control system.

Description

technical field [0001] The invention relates to a single-chip microcomputer processing technology, in particular to a single-chip microcomputer system clock frequency control method and system. Background technique [0002] As we all know, the single-chip microcomputer system is an integrated circuit chip system, which uses VLSI technology to integrate a processor with data processing capabilities, random access memory RAM, read-only memory ROM, various I / O ports and interrupt systems, timers / Functions such as timers (may also include display drive circuits, pulse width modulation circuits, analog multiplexers, A / D converters, etc.) are integrated into a silicon chip to form a small but complete microcomputer system. Almost every product with electronic devices used in modern human life will integrate a single-chip microcomputer. For example, electronic products such as mobile phones, telephones, calculators, household appliances, electronic toys, handheld computers, and m...

AI Technical Summary

Problems solved by technology

[0003] However, after the existing single-chip microcomputer system is powered on and started, the single-chip microcomputer system runs at a normal operating clock frequency. The phenomenon of excessive current consumption for a short time will lead to a sudden drop in voltage, which will cause the system of the single-chip system to crash and crash. At the same time, the phenomenon of excessive current consumption for a short time will greatly increase the power consumption of the single-chip system.

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