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Semiconductor device, semiconductor system, and method of operating the semiconductor device

  • US 10,296,066 B2
  • Filed: 01/25/2017
  • Issued: 05/21/2019
  • Est. Priority Date: 01/25/2016
  • Status: Active Grant
First Claim
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1. A system on chip (SoC) comprising:

  • a clock management unit (CMU) comprising a plurality of clock circuits, a control circuit and an output pin, the CMU configured to receive a request signal from a first external device or the control circuit, and generate a clock signal using the plurality of clock circuits in response to the request signal,wherein the control circuit is configured to determine whether the CMU is to operate in one of a functional mode and a monitoring mode,wherein the control circuit is configured to provide the request signal to at least one of the clock circuits and selectively provide one of a plurality of outputs of the clock circuits to the output pin in response to at least one acknowledgment signal received from at least one of the clock circuits, when the CMU is determined to operate in the functional mode, andwherein the control circuit is configured to selectively provide one of the plurality of outputs to the output pin without providing the request signal to any of the clock circuits, when the CMU is determined to operate in the monitoring mode.

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