WINBOND > Voice & Speech IC > Serial Memory Family   Serial Flash Memory: W55Fxx Part # W55F01 W55F05B W55F10A W55F10B W55F20 Density 128K bits 512K bits 1M bits 1M bits 2M bits   Serial Read Only Memory (ROM): W551Cxxx Part # W551C002 W551C005 W551C010 W551C020 W551C040 Density 256K bits 512K bits 1M bits 2M bits 4M bits Part # W551C060 W551C080 W551C160 W551C320 Density 6M bits 8M bits 16M bits 32M bits