64 Mbit (8Mb X8 Or 4Mb X16, Page, Boot Block) 3V Supply Flash Memory

The M29W640F is a 64 Mbit (8Mb x8 or 4Mb x16) non-volatile memory that CAN be read, erased and reprogrammed. These operations CAN be performed using a single low voltage (2.7 to 3.6V) supply. On power-up the memory defaults to its Read mode. M29W640FT has the Parameter Blocks at the top of the memory address space while the M29W640FB locates the Parameter Blocks starting from the bottom. By STMicroelectronics