GENERAL DESCRIPTION

The EN25B40 is a 4M-bit (512K-byte) Serial Flash memory, with advanced write protection mechanisms, accessed by a high speed SPI-compatible bus. The memory can be programmed 1 to 256 bytes at a time, using the Page Program instruction.

FEATURES

? Single power supply operation

- Full voltage range: 2.7-3.6 volt

? 4 M-bit Serial Flash

- 4 M-bit/512 K-byte/2048 pages

- 256 bytes per programmable page

?High performance

- 75MHz clock rate

? Low power consumption

- 5 mA typical active current

- 1 μA typical power down current

? Flexible Sector Architecture:

- Two 4-Kbyte, one 8-Kbyte, one 16-Kbyte,one

32-Kbyte, and seven 64-Kbyte sectors

? Software and Hardware Write Protection:

- Write Protect all or portion of memory via software

- Enable/Disable protection with WP# pin

? High performance program/erase speed

- Byte program time: 7μs typical

- Page program time: 1.5ms typical

- Sector erase time: 300 to 800ms typical

- Chip erase time: 5 Seconds typical

? Minimum 100K endurance cycle

?Package Options

- 8 pins SOP 150mil body width

- 8 pins SOP 200mil body width

- 8 contact VDFN

- 8 pins PDIP

- All Pb-free packages are RoHS compliant

?Commercial and industrial temperature Range