29F040 Datasheet - STMicroelectronics

29F040, 4 Mbit 512Kb x8 / Uniform Block Single Supply Flash Memory

M29F040 4 Mbit (512Kb x8, Uniform Block) Single Supply Flash Memory NOT FOR NEW DESIGN M29F040 is replaced by the M29F040B 5V ± 10% SUPPLY VOLTAGE fo.
The M29F040 is a non-volatile memory that may be erased electrically at the block level, and programmed Byte-by-Byte.

Features

* Read Data Polling or Toggle Bit until Program completes. Program Data 5555h AAh 5555h AAh 2AAAh 55h 2AAAh

29F040_STMicroelectronics.pdf