The subject part has become unavailable as have the AT25PE40 (Adesto aka Dialog) and M25PE40 (Microchip).
Replacement should be in SOIC-8N (to avoid a board re-spin), and support low speed SPI (the ARM LPC2388 won't do SPI at 40MHz for example).
Obviously replacement can be larger capacity but must be a straight swap (i.e. identical SPI protocol, 3.3V, pinout etc.).
To save time fighting through a milliard datasheets has anyone been there, done that and have a recommendation?
Thanks
David