公开(公告)号：US20040199803A1

公开(公告)日：2004-10-07

申请号：US10829938

申请日：2004-04-23

申请人： FUJITSU LIMITED

发明人： Takaaki Suzuki ,  Yukinori Kodama ,  Sumie Kodama

IPC分类号： G06F001/12 ,  G06F001/26

CPC分类号： G06F1/324 ,  G06F1/3203 ,  G06F1/3253 ,  G06F1/3275 ,  G06F1/3296 ,  Y02D10/126 ,  Y02D10/14 ,  Y02D10/151 ,  Y02D10/172 ,  Y02D50/20

摘要： A semiconductor integrated circuit is disclosed that operates in synch with a clock signal supplied from an external source, and by a voltage supplied by a power supply. The circuit includes a detection means for detecting that at least one of a frequency of the clock signal and the supply voltage is reduced, and an internal voltage reduction means for lowering an internal voltage of the semiconductor integrated circuit when the detection means detects that at least one of the frequency and the supply voltage is lowered.

摘要翻译： 公开了一种半导体集成电路，其与从外部源提供的时钟信号和由电源提供的电压同步工作。 该电路包括检测装置，用于检测时钟信号和电源电压的频率中的至少一个被降低;以及内部电压降低装置，用于当检测装置检测到至少一个时，降低半导体集成电路的内部电压 频率和电源电压之一降低。