This Data Sheet may be revised by subsequent versions

©2004 Eon Silicon Solution, Inc., www.essi.com.tw

or modifications due to changes in technical specifications.

1

EN25B05

Rev. B, Issue Date: 2006/12/26

FEATURES

• Single power supply operation

- Full voltage range: 2.7-3.6 volt

• 512 K-bit Serial Flash

- 512 K-bit/64 K-byte/256 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 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: 8µs typical

- Page program time: 1.5ms typical

- Sector erase time: 300 to 500ms typical

- Chip erase time: 1.5 Seconds typical

• Package Options

- 8 pins SOP 150mil body width

- 8 contact VDFN

• Commercial and industrial temperature

Range

GENERAL DESCRIPTION

The EN25B05 is a 512 K-bit (64K-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.

The EN25B05 has five sectors including one sector of 32KB, one sector of 16KB, one sector of

8KB and two sectors of 4KB. This device is designed to allow either single Sector at a time or full

chip erase operation. The EN25B05 can protect boot code stored in the small sectors for either

bottom or top boot configurations. The device can sustain a minimum of 100K program/erase cycles

on each sector.

EN25B05

512 Kbit Serial Flash Memory with Boot and Parameter Sectors