EN29LV800 EON [Eon Silicon Solution Inc.], EN29LV800 Datasheet - Page 22

• Manufacturer Part Number: EN29LV800
• Description: 8 Megabit (1024K x 8-bit / 512K x 16-bit) Flash Memory Boot Sector Flash Memory, CMOS 3.0 Volt-only
• Manufacturer: EON [Eon Silicon Solution Inc.]

Flowchart 7a. In-System Sector Protect Flowchart
4800 Great America Parkway, Suite 202
Santa Clara, CA 95054
Temporary Sector
Sector Protect
Unprotect Mode
Algorithm
PLSCNT = 25?
Device failed
Increment
PLSCNT
Rev 0.4 Release Date: 2002/01/29
No
Yes
No
No
Sector Protect: Write 60h
to sector addr with
A6 = 0, A1 = 1, A0 = 0
Verify Sector Protect:
Write 40h to sector
address with
A6 = 0, A1 = 1, A0 = 0
A6 = 0, A1 = 1, A0
22
Read from sector
Protect another
RESET# = V
Sector Protect
from RESET#
Data = 01h?
Set up sector
PLSCNT = 1
address with
Wait 150 s
Remove V
Write reset
Wait 0.4 s
First Write
command
Wait 1 s
complete
address
START
Cycle =
sector?
60h?
Yes
No
Yes
ID
ID
Yes
PLSCNT = 1
Reset
EN29LV800
Tel: [phone]
Fax: [phone]