Importance

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Abstract

A device for clock control and related products are provided. The device includes a voltage detecting unit and a clock stretching unit. The voltage detecting unit is configured to detect a supply voltage at a target position in the processor, and output a voltage-alarm signal when the supply voltage is lower than or equal to a preset first threshold. The clock stretching unit is connected with the voltage detecting unit and configured to generate a second clock signal according to a first clock signal having a reference frequency in response to reception of the voltage-alarm signal, such that the processor uses the second clock signal to perform data processing. A frequency of the second clock signal is lower than the reference frequency. According to the device for clock control of the disclosure, when a supply voltage of a critical path is lower than a threshold, frequency reduction may be performed on the clock signal, setup time slack of the logic circuit may be increased, and a load of the processor may be reduced, thereby avoiding an error in the data processing result and realizing the control of the voltage droop with load.

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First Claim