SEMICONDUCTOR INTEGRATED CIRCUIT, METHOD OF MANUFACTURING SEMICONDUCTOR INTEGRATED CIRCUIT, COMPUTER SYSTEM, AND METHOD OF CONTROLLING SEMICONDUCTOR INTEGRATED CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a semiconductor integrated circuit capable of normally resuming system operation even when the system is unexpectedly brought into a state in which power supply is stopped.SOLUTION: A semiconductor integrated circuit includes: at least one nonvolatile register that includes a holding circuit for holding volatile data and a nonvolatile element for holding nonvolatile data; a nonvolatile memory that, for a match or mismatch between the volatile data and nonvolatile data within the nonvolatile register, holds a first value if there is the match and holds a second value if there is the mismatch; a monitoring circuit that monitors a match/mismatch state within the nonvolatile register of the nonvolatile memory and outputs a signal according to the state of the nonvolatile memory; and a node that outputs the signal from the monitoring circuit to an internal arithmetic unit or external device. In the startup operation of a power supply, if the nonvolatile memory holds the second value, the monitoring circuit supplies an active signal to the node.