SEMICONDUCTOR DEVICE

摘要

A semiconductor device has an external interface terminal and a processing circuit, and is removably attached to a host device so as to be supplied with operation power. Power supplying terminals (VCC, VSS) have a length that makes possible to keep contact with corresponding terminals of the host device for a prescribed time or more after a removal detecting terminal is taken out from the corresponding terminals of the host device, and are formed longer than the removal detecting terminal in the removal direction. The power supplying terminals are a power supply terminal and a grounding terminal, and a power supply compensation capacitor is not connected between the power supply terminal and the grounding terminal. Since it is easy to ensure a time required for power supply shutting, a capacitor for compensating operation power supply is not required at the time of shutting the power supply during the operation.