SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE

摘要

PURPOSE:To select surely the power-down mode without the provision of a power-down control exclusive terminal by selecting whether or not an input signal from a pin is connected to a product term generating circuit based on a pin select signal from a nonvolatile storage element. CONSTITUTION:Whether or not an input signal from each pin is connected or whether or not any input signal is connected is given to a circuit generating the product term depending on the operation of gates G5-G11 or whether the pin select signal S is at H level or L level. A pin select signal S and a polarity signal P are obtained from a nonvolatile storage element in the semiconductor integrated circuit device. Even when a disable signal exists among chip enable signals from the circuit added to each pin, the power-down mode enters to bring the semiconductor integrated circuit device into the inactive state.