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 (11, 21), one of the control unit 33 to perform data write or data-erase operation for the memory area (11, 21), the data write or data-erase operation detecting the specifying one of the performing memory area (11, 21) address and at least one output terminal for supplying an address detection unit that supplies information indicating an address 51, information to the outside of the device (61, 62 and a).