Memory controller for controlling an integrated memory undergoing logical state transitions

摘要

A controller and a control method of an integrated memory provided in a system LSI used in television receiver or other video appliance are disclosed. In the memory controller of the invention, when a clock signal suspend command signal not synchronized with a synchronization signal is entered, a suspend command signal synchronized with the synchronization signal is generated. The clock signal supplied in the integrated memory is suspended according to a synchronized suspend command signal. Since the clock signal supply is suspended only while the integrated memory is in idling state, the power consumption of the system LSI can be saved without breaking down the integrated memory.