S29AL008J70TFI010 Spansion Inc., S29AL008J70TFI010 Datasheet - Page 22

• Manufacturer Part Number: S29AL008J70TFI010
• Description: IC, FLASH, 8MBIT, 70NS, TSOP-48
• Manufacturer: Spansion Inc.

Specifications of S29AL008J70TFI010

• Memory Type: Flash
• Memory Size: 8Mbit
• Memory Configuration: 1M X 8 / 512K X 16
• Ic Interface Type: CFI, Parallel
• Access Time: 70ns
• Supply Voltage Range: 2.7 To 3.6 V
• Memory Case Style: TSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

22
Protect Algorithm
Temporary Sector Group
Sector Group
Unprotect Mode
Device failed
Increment
PLSCNT
PLSCNT
= 25?
No
Yes
No
to sector group address
No
sector group address
Verify Sector Group
Set up sector group
Write 60h to sector group
Protect: Write 40h
Figure 7.2 In-System Sector Group Protect/Unprotect Algorithms
Protect complete
Sector Group Protect:
Protect another
RESET# = V
A1 = 1, A0 = 0
A1 = 1, A0 = 0
from RESET#
A3 = A2 = 0,
A3 = A2 = 0,
Sector Group
PLSCNT = 1
Cycle = 60h?
Remove V
Data = 01h?
Wait 150 µs
with A6 = 0,
with A6 = 0,
Write reset
Read from
First Write
command
Wait 1 µs
address
A1 = 1, A0 = 0
START
sector?
address with
A3 = A2 = 0,
A6 = 0,
Yes
Yes
No
ID
ID
Yes
PLSCNT = 1
Reset
S29AL008J
Sector Group Unprotect
unprotected sector groups
of the sector group protect
D a t a
The indicated portion
Protect all sectors:
prior to issuing the
unprotect address
algorithm must be
first sector group
performed for all
Algorithm
Device failed
S h e e t
Increment
PLSCNT
PLSCNT
= 1000?
No
Yes
No
No
sector groupaddress
Verify Sector Group
Unprotect complete
Unprotect: Write
A1 = 1, A0 = 0
Set up first sector
Sector GroupUnprotect:
S29AL008J_00_09 February 23, 2010
A3 = A2 = 0,
A1 = 1, A0 = 0
40h to sector
with A6 = 1,
address with
A3 = A2 = 0,
RESET# = V
Read from
group verified?
from RESET#
group address
Sector Group
PLSCNT = 1
Cycle = 60h?
Write 60h to sector
Remove V
Wait 1.5 ms
Data = 00h?
Write reset
Last sector
First Write
command
All sectors
protected?
A6 = 1,
Wait 1 µs
A1 = 1, A0 = 0
START
address with
A3 = A2 = 0,
A6 = 1,
Yes
Yes
Yes
Yes
ID
ID
No
No
next sector group
Temporary Sector
Group Unprotect
address
Set up
Mode