SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE HAVING COMPONENT CIRCUITS FREE FROM THROUGH-CURRENT IN TRANSITION PERIOD BETWEEN ACTIVE MODE AND SLEEP MODE

摘要

The semiconductor integrated circuit device includes a high speed bus driver 21 and a bus receiver 22 all connected to a bus line BUS2, and the high speed bus driver includes a positive power supply voltage line VDD and a virtual ground line ( VGND) and the sleep mode to cut off the virtual ground line from the power line (GND) to reduce power consumption, and to enter the high speed to disconnect the bus line from the high speed bus driver in the transition period and sleep mode. The switching circuit 23 is connected between the bus driver 21 and the bus line BUS2 to block the through-current conduction path caused by the leakage current of the high speed component field effect transistor of the bus driver.