| 摘要 |
PURPOSE:To provide the integrated circuit provided with the hardware standby mode in which high speed operation is available and the circuit is in operation with a sufficiently small power consumption. CONSTITUTION:The integrated circuit is provided with a state latch circuit comprising a capacitor 108 and a switch 107, and the charge of the capacitor 108 is kept by interrupting the switch 107 with a control signal when a main power supply is failed. The state latch circuit has CMOS circuits 102-106 and a threshold voltage of the MOS transistor(TR) being a component of the switch 107 is set higher than a threshold voltage of the MOS TR of the CMOS circuit. Since the threshold voltage of the CMOS circuits 102-106 is set to a low voltage, the high speed circuit operation is attained. On the other hand, the threshold voltage of the MOS TR of the switch element 107 is set to a high voltage, resulting in decreasing the leak current and the state latch characteristic is improved and the power consumption is reduced. |
