AM29LV800DB-70ED Spansion Inc., AM29LV800DB-70ED Datasheet - Page 18

• Manufacturer Part Number: AM29LV800DB-70ED
• Description: Flash Memory IC
• Manufacturer: Spansion Inc.
• Series: AM29r

Specifications of AM29LV800DB-70ED

• Memory Size: 8Mbit
• Package/case: 48-TSOP
• Supply Voltage Max: 3V
• Leaded Process Compatible: Yes
• Peak Reflow Compatible (260 C): Yes
• Access Time, Tacc: 70nS
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

16
Sector Protect
Temporary Sector
Unprotect Mode
Device failed
Algorithm
Increment
PLSCNT
PLSCNT
= 25?
No
Yes
No
No
Write 60h to sector
Protect: Write 40h
to sector address
A6 = 0, A1 = 1,
A1 = 1, A0 = 0
A1 = 1, A0 = 0
Protect another
Sector Protect:
sector address
RESET# = V
Sector Protect
Verify Sector
from RESET#
Set up sector
with A6 = 0,
with A6 = 0,
Cycle = 60h?
address with
Remove V
Data = 01h?
PLSCNT = 1
Wait 150
Write reset
Read from
First Write
Wait 1 ms
command
complete
address
A0 = 0
sector?
START
No
Yes
Yes
ID
ID
Figure 2. In-System Sector Protect/
s
Yes
Sector Unprotect Algorithms
PLSCNT = 1
P R E L I M I N A R Y
Reset
Am29LV800D
The indicated portion
unprotected sectors
of the sector protect
prior to issuing the
Protect all sectors:
unprotect address
algorithm must be
performed for all
Sector Unprotect
first sector
Algorithm
Device failed
Increment
= 1000?
PLSCNT
PLSCNT
No
Yes
Am29LV800D_00_A4_E January 21, 2005
No
No
Write 60h to sector
Set up first sector
Sector Unprotect:
Unprotect: Write
Sector Unprotect
A6 = 1, A1 = 1,
A6 = 1, A1 = 1,
A1 = 1, A0 = 0
sector address
RESET# = V
40h to sector
Verify Sector
from RESET#
address with
with A6 = 1,
Cycle = 60h?
address with
Remove V
Data = 00h?
PLSCNT = 1
Write reset
Wait 15 ms
First Write
Read from
Last sector
Wait 1 ms
protected?
command
All sectors
complete
verified?
address
A0 = 0
A0 = 0
START
Yes
Yes
Yes
Yes
ID
ID
No
No
Temporary Sector
Unprotect Mode
next sector
address
Set up