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ELECTRONIC DEVICE, POWER SUPPLY VOLTAGE CONTROL METHOD OF ELECTRONIC DEVICE, SEMICONDUCTOR DEVICE, POWER SUPPLY VOLTAGE CONTROL METHOD OF SEMICONDUCTOR DEVICE
ELECTRONIC DEVICE, POWER SUPPLY VOLTAGE CONTROL METHOD OF ELECTRONIC DEVICE, SEMICONDUCTOR DEVICE, POWER SUPPLY VOLTAGE CONTROL METHOD OF SEMICONDUCTOR DEVICE
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机译:电子设备,电子设备的电源电压控制方法,半导体设备,半导体设备的电源电压控制方法
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摘要
PROBLEM TO BE SOLVED: To provide an electronic device in which power consumption of an LSI can be reduced by lowering the power supply voltage of the I/O circuit of the LSI.;SOLUTION: A test signal generation unit 41A is provided in a first device 2A and transmits a test signal A to a test signal inspection unit 42B. The test signal inspection unit 42B is provided in a second device 2B and transmits a response signal A indicating whether or not the test signal A is received correctly to an I/O power supply control unit. The I/O power supply control unit generates a voltage decrease signal if a response signal A indicates that the test signal A is received correctly, otherwise generates a voltage increase signal. An I/O power supply unit supplies an I/O power supply having a voltage value decreased based on the voltage decrease signal, or an I/O power supply having a voltage value increased based on the voltage increase signal to a plurality of I/O circuits.;COPYRIGHT: (C)2012,JPO&INPIT
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