Non-volatile semiconductor memory device permitting data-read operation performed during data-write/erase operation

摘要

A non-volatile semiconductor memory includes a plurality of memory areas, a control unit which performs a data-write or data-erase operation with respect to one of the memory areas, an address-detection unit which detects an address that indicates the one of the memory areas having the data-write or data-erase operation performed therein, and supplies information indicative of the address, and at least one output terminal which supplies the information to an exterior of the device.