The MSS1506 is a single-chip CMOS LSI ROM that can memorize voice up to 15 seconds using MOSE L qualified coding method (MPCM). Four addressing interfaces are provided: CPU mode, Stand Alone mode, Ring Trigger mode and Table Trigger mode for versatile applications. The voice content can be stored separatly into 64 or 8 or 16 sections or 1 phrase with arbitary length. With minimum external components, this chip can be applied to various application. Customer voice is edited and programmed into ROM by changing one mask during fabrication. Block Diagram