Patent ID: 6141290
Filing Date: 2000-10-31
Classification: G11C

Abstract:
A method of causing an integrated circuit to perform first and second functions responsive to respective first and second combinations of control signals, at least one of the control signals in the first and second combinations being common to each other, the method comprising:decoding the control signals to determine if the first combination of control signals have been applied to the integrated circuit;before or after decoding the first combination of control signals, checking to determine if at least one of the control signals in the second combination that is not common to the first combination of control signals is received or if at least one of the control signals in the first combination that is not common to the second combination of control signals is removed; andif the one or more control signal in the second combination that is not common to the first combination of control signals is received or the one or more control signals in the first combination that is not common to the second combination of control signals is removed with predetermined criteria, causing the integrated circuit to perform the second function.