This part is a kind of semiconductor called 29F800.

Function of this product has 8 Mbit 1Mb x8 or 512Kb x16 / Boot Block Single Supply Flash Memory.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

M29F800AT M29F800AB 8 Mbit (1Mb x8 or 512Kb x16, Boot Block) Single Supply Flash Memory PRELIMINARY DATA s SINGLE 5V±10% SUPPLY VOLTAGE for PROGRAM, ERASE and READ OPERATIONS ACCESS TIME: 70ns PROGRAMMING TIME – 8µs per Byte/Word typical 19 MEMORY BLOCKS – 1 Boot Block (Top or Bottom Location) – 2 Parameter and 16 Main Blocks 1 44 s s s s PROGRAM/ERASE CONTROLLER – Embedded Byte/Word Program algorithm – Embedded Multi-Block/Chip Erase algorithm – Status Register Polling and Toggle Bits – Ready/Busy Output Pin TSOP48 (N) 12 x 20mm SO44 (M) s ERASE SUSPEND and RESUME MODES – Read and Program another Block during Erase Suspend Figure 1. Logic Diagram s TEMPORARY BLOCK UNPROTECTION MODE LOW POWER CONSUMPTION – Standby and Automatic Standby 19 A0-A18 W E G RP VC [ ... ]

29F800 PDF Datasheet Download