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.

4

EN25P40

Rev. D, Issue Date: 2006/12/25

MEMORY ORGANIZATION

The memory is organized as:

524,288 bytes

Uniform Sector Architecture

Eight 64-Kbyte sectors

2048 pages (256 bytes each)

Each page can be individually programmed (bits are programmed from 1 to 0). The device is Sector or

Bulk Erasable but not Page Erasable.

Table 2. Block Sector Architecture

Sector

SECTOR SIZE (KByte)

Address range

7

64

70000h – 7FFFFh

6

64

60000h – 6FFFFh

5

64

50000h – 5FFFFh

4

64

40000h – 4FFFFh

3

64

30000h – 3FFFFh

2

64

20000h – 2FFFFh

1

64

10000h – 1FFFFh

0

64

00000h – 0FFFFh