Memory control device for controlling reading or writing operation, has frequency change control device to deliver frequency change control signal to output based on multiple control signals and memory clock signal

摘要

The device has a memory interface (112) to deliver multiple control signals at the output based on a read/write command signal. The interface generates a memory clock signal based on a system clock signal and changes the memory signal frequency based on a frequency change control signal. A frequency change control device (113) delivers the control signal at the output based on the multiple control signals and the memory signal. Independent claims are also included for the following: (a) a chip card (b) a process of control of a read operation of a memory.