POWER-SUPPLY VOLTAGE FREQUENCY CONTROL CIRCUIT

专利名称：POWER-SUPPLY VOLTAGE FREQUENCY

CONTROL CIRCUIT

发明人：Tetsumasa Meguro申请号：US10291735申请日：20021112

公开号：US20040090808A1公开日：20040513

专利附图：

摘要：A power-supply voltage frequency control circuit capable of changing a clockfrequency in accordance with processing and assuring an operation of a target circuitwhen supplying a power-supply voltage in accordance therewith, comprising a clock

supply circuit capable of supplying a system clock of a plurality of clock frequencies andsupplying a system clock having a clock frequency in accordance with a first control signalto a target circuit performing processing in synchronization with the system clock, apower-supply voltage supply circuit for supplying a power-supply voltage of a value inaccordance with a second control signal to the target circuit, and a control circuit foroutputting the first control signal to the clock supply circuit and a second control signalto the power-supply voltage supply circuit by following an instruction of a frequencychange value and a change time from the target circuit.

申请人：MEGURO TETSUMASA

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