EN29LV160 View Datasheet(PDF) - Eon Silicon Solution Inc.

Part Name

Description

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EN29LV160

16 Megabit (2048K x 8-bit / 1024K x 16-bit) Flash Memory Boot Sector Flash Memory, CMOS 3.0 Volt-only

Eon Silicon Solution Inc. 

Flowchart 7b. In-System Sector Unprotect Flowchart

EN29LV160

START

Protect all sectors:

The indicated portion

of the sector protect

algorithm must be

performed for all

unprotected sectors

prior to issuing the

first sector unprotect

address (see

Diagram 7a.)

PLSCNT = 1

RESET# = VID

Wait 1 µS

No

First Write

Cycle = 60h?

Yes

No

All sectors

protected?

Yes

Set up first sector

address

Sector Unprotect: Write 60H to

sector address with A6 = 1,

A1 = 1, A0 = 0

Temporary Sector

Unprotect Mode

Increment

PLSCNT

Wait 15 ms

Verify Sector Unprotect:

Write 40h to sector address

with A6 = 1, A1 = 1, A0 =0

Wait 0.4 µS

Read from sector address with

A6 = 1, A1 = 1, A0 = 0

No

Sector

Unprotect

Algorithm

PLSCCNT =

1000?

Yes

Device failed

No

Data = 00h?

Set up next sector

address

Yes

Last sector

No

verified?

Yes

Remove VID from

RESET#

Write reset

command

Sector Unprotect

complete

This Data Sheet may be revised by subsequent versions 25 ©2003 Eon Silicon Solution, Inc., www.essi.com.tw

or modifications due to changes in technical specifications.

Rev. A, Issue Date: 2004/03/30

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