M29W800DB70M1 Datasheet PDF - STMicroelectronics

The M29W800D is a 8 Mbit (1Mb x8 or 512Kb 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 where it can be read in the same way as a ROM or EPROM.