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

EN25P20

Rev. D, Issue Date: 2007/05/07

MEMORY ORGANIZATION

The memory is organized as:

262,144 bytes

Uniform Sector Architecture

Four 64-Kbyte sectors

1024 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

3

64

30000h – 3FFFFh

2

64

20000h – 2FFFFh

1

64

10000h – 1FFFFh

0

64

00000h – 0FFFFh