Patent ID: 8072832

Claim:
An electronic equipment system, comprising: a semiconductor integrated circuit having a nonvolatile memory storing information on a characteristic of the semiconductor integrated circuit; and a controller configured to control the semiconductor integrated circuit, wherein the controller has a function of adjusting an access parameter to the semiconductor integrated circuit based on the information stored in the nonvolatile memory; the function of the controller of adjusting an access parameter to the semiconductor integrated circuit is a function of adjusting an electric characteristic of a signal or a voltage supplied to the semiconductor integrated circuit or another semiconductor integrated circuit operating in coordination with the semiconductor integrated circuit based on the information stored in the nonvolatile memory; and the signal supplied to the semiconductor integrated circuit or the another semiconductor integrated circuit is a clock signal or a timing control signal, and the electric characteristic is at least one of the edge timing, duty ratio, phase, and frequency of the clock signal or the edge timing of the timing control signal.