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    • 8. 发明申请
    • Integrated circuit device and electronic instrument
    • 集成电路器件和电子仪器
    • US20080252634A1
    • 2008-10-16
    • US12081008
    • 2008-04-09
    • Shinya SatoTakayuki SaikiHiroyuki TakamiyaMasaaki Abe
    • Shinya SatoTakayuki SaikiHiroyuki TakamiyaMasaaki Abe
    • G06F3/038H03K19/0175
    • H03K19/00315
    • An integrated circuit device includes a first circuit block that includes low-voltage transistors (LVTr) and operates using a first high-potential power supply voltage and a first low-potential power supply voltage, a second circuit block that includes low-voltage transistors (LVTr) and operates using a second high-potential power supply voltage and a second low-potential power supply voltage that differ in power supply system from the first circuit block, and an interface circuit (I/O buffer) provided between the first circuit block and the second circuit block. The interface circuit (I/O buffer) includes medium-voltage transistors (MVTr: transistors of which the thickness of the gate insulating film is larger than that of the low-voltage transistors (LVTr)). An electrostatic discharge protection circuit formed of bidirectional diodes is provided between a first and second low-potential power supply nodes.
    • 集成电路器件包括包括低压晶体管(LVTr)的第一电路块,并且使用第一高电位电源电压和第一低电位电源电压进行操作,第二电路块包括低压晶体管( LVTr),并且使用电源系统与第一电路块不同的第二高电位电源电压和第二低电位电源电压进行操作,以及设置在第一电路块之间的接口电路(I / O缓冲器) 和第二电路块。 接口电路(I / O缓冲器)包括中压晶体管(MVTr:栅极绝缘膜的厚度大于低压晶体管的厚度(LVTr)的晶体管)。 在第一和第二低电位电源节点之间设置由双向二极管形成的静电放电保护电路。