Chip, starting protection device and method of chip

Abstract

The invention provides a chip, a starting protection device and a starting protection method of the chip, wherein the protection device comprises a storage unit, an adjustable clock generation unit and a check code comparison unit; the storage unit is stored with a first check code; the adjustable clock generation unit is used for outputting a clock signal of a preset frequency after power on, and reducing the frequency of the output clock signal according to a received frequency reduction command; the check code comparison unit is connected with the adjustable clock generation unit and the storage unit, and is used for comparing the first check code stored in the storage unit with a preset second check code, if consistent, triggering each piece of working hardware in the chip to start according to the clock signal of the current frequency, and if inconsistent, sending the frequency reduction command to the adjustable clock generation unit. According to the chip, the starting protection device and the starting protection method of the chip, the chip automatically adapts a working method of an external environment under the conditions of guaranteeing maximum performances of a system and also guaranteeing high stability of the system.

Description

technical field [0001] The invention relates to the field of chips, in particular to a chip, a startup protection device and a method for the chip. Background technique [0002] With the development of highly integrated chips, many integrated chips contain sensitive devices such as processors and memories. These sensitive devices have strict requirements on the working environment and clock frequency. Therefore, when designing, a delay circuit is usually included in a high-reliability chip to ensure that the clock signal of a circuit containing sensitive devices is stable. [0003] However, due to many factors that interfere with sensitive circuits, such as level jitter at power-on, interference from external electromagnetic fields, temperature and humidity interference, etc., an excessively high and fixed clock signal may cause the chip to fail to operate in a disturbed environment, restart repeatedly, Misreading information etc. [0004] Therefore, it is necessary to im...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a chip, a chip startup protection device and a method, which are used to solve the problem in the prior art that the fixed clock signal with too high frequency cannot ensure the stability of the chip working system

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