Semiconductor device, semiconductor system and method for operating semiconductor device

Abstract

A semiconductor device includes a code generation block configured to generate an output clock by delaying a reference clock which is inputted from an exterior, control a delay value of the output clock based on a result of comparing phases of the reference clock and a feedback clock, and generate a first control code corresponding to the delay value of the output clock, a voltage generation block configured to generate an internal voltage with a voltage level corresponding to the first control code, a clock generation block configured to generate an internal clock with a frequency corresponding to the first control code, and a feedback delay block configured to generate the feedback clock by delaying the output clock by a delay value corresponding to a second control code.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2014-0059618 filed on May 19, 2014, the entire contents of which are hereby incorporated by reference. technical field [0003] This patent document relates to semiconductor devices, semiconductor systems, and methods of operating semiconductor devices. Background technique [0004] System on Chip (SoC) is a technology that incorporates various functional blocks such as CPU (Central Processing Unit), memory, interface, digital signal processing circuit, and analog signal processing circuit in one semiconductor integrated circuit. Application examples of SoCs include computer systems, electronic systems, and integrated circuits (ICs) manufactured for various electronic devices. [0005] SoCs are developing more complex systems by incorporating various functions associated with processors, multimedia, graphics, interfaces and security. If SoC techno...

AI Technical Summary

Problems solved by technology

As the frequency of clock signals in semiconductor circuits increases in combination with high-voltage power supplies, the operating speed of semiconductor circuits increases and power consumption also increases

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