The Micron Technology Inc. M45PE40 is a 4Mb (512K x 8) FLASH - NOR memory IC. It has a maximum frequency of 75MHz and operates at a supply voltage of 2.7 V to 3.6 V. The memory format is FLASH and it comes in an 8-SO W case/package. Its temperature range for operating is -40°C to 85°C (TA). This product is part of the M45PE40 family and is categorized under Integrated Circuits. Alternative parts (cross-reference) include S25FL040A0LMAI020, S25FL004A0LMFI00, S25FL004A0LMF001, and S25FL040A0LMAI011. Its introduction date was March 23, 1998. This product is commonly used and has a high popularity. It is important to note that its estimated EOL date is obsolete/end of life.