POWER CONTROL CIRCUIT AND SEMICONDUCTOR MEMORY DEVICE USING IT

摘要

PURPOSE: A power control circuit and a semiconductor memory device thereof are provided to reduce the current consumption by disconnecting a power source supplied to an internal circuit when all the bank of DRAM are pre-charged after executing a read and write command. CONSTITUTION: A power control circuit outputs a power supply voltage during a read operation period and write operation period. An internal circuit(4) is operated by receiving a power voltage. A write-off signal generator(32) generates an enabled write-off signal. A read-off signal generator(33) generates an enabled read-off signal. A switching signal generator(34) generates a switching signal after receiving a write-off signal and a read-off signal.