Description
The M45PE40 is a 4 Mbit (512 K x 8 bit) Serial Paged Flash Memory accessed by a high speed SPI-compatible bus. The memory can be written or programmed 1 to 256 bytes at a time, using the Page Write or Page Program instruction. The Page Write instruction consists of an integrated Page Erase cycle followed by a Page Program cycle.

FEATUREs
■ SPI bus compatible serial interface
■ 50 MHz clock rate (maximum)
■ 2.7 V to 3.6 V single supply voltage
■ 4 Mbits of Page-Erasable Flash memory
■ Page size: 256 bytes:
– Page Write in 11 ms (typical)
– Page Program in 0.8 ms (typical)
– Page Erase in 10 ms (typical)
■ Sector Erase (64 Kbytes)
■ Hardware Write protection of the bottom sector (64 Kbytes)
■ Electronic Signature
– JEDEC standard two-byte signature (4013h)
■ Deep Power-down Mode 1µA (typical)
■ More than 100 000 Write cycles
■ More than 20 years’ data retention
■ Packages
– ECOPACK® (RoHS compliant)