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

EN25B80

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

MEMORY ORGANIZATION

The memory is organized as:

1,048,576 bytes

Flexible Sector Architecture

Two 4-Kbyte, one 8-Kbyte, one 16-Kbyte,one 32-Kbyte, and fifteen 64-Kbyte sectors

Bottom or top boot configurations

4096 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.

Sector

SECTOR SIZE (KByte)

Address range

19

64

F0000h – FFFFFh

18

64

E0000h – EFFFFh

17

64

D0000h – DFFFFh

16

64

C0000h – CFFFFh

15

64

B0000h – BFFFFh

14

64

A0000h – AFFFFh

13

64

90000h – 9FFFFh

12

64

80000h – 8FFFFh

11

64

70000h – 7FFFFh

10

64

60000h – 6FFFFh

9

64

50000h – 5FFFFh

8

64

40000h – 4FFFFh

7

64

30000h – 3FFFFh

6

64

20000h – 2FFFFh

5

64

10000h – 1FFFFh

4

32

08000h – 0FFFFh

3

16

04000h – 07FFFh

2

8

02000h – 03FFFh

1

4

01000h – 01FFFh

0

4

00000h – 00FFFh