SEMICONDUCTOR MEMORY STORAGE DEVICE

摘要

PROBLEM TO BE SOLVED: To realize a semiconductor memory storage device by which bus usage efficiency is enhanced and data such as program data is recorded in real-time. SOLUTION: Memory modules 13-1 to 13-N connected to a main bus 100 are provided with a plurality of flash EEPROMs 131 and a buffer 132 arranged between the flash EEPROMs 131 and the main bus 100. When data is written in the memory modules 13-1 to 13-N, data transfer from an input processor 11-1 or 11-2 to the buffer 132 of the applicable memory module is continuously performed. Then a data writing operation from the buffer 132 to the flash EEPROMs 131 is repeatedly performed by page size unit of the flash EEPROM 131.