S29AL032D90TFI030 Spansion Inc., S29AL032D90TFI030 Datasheet - Page 27

• Manufacturer Part Number: S29AL032D90TFI030
• Description: Flash Memory IC
• Manufacturer: Spansion Inc.

Specifications of S29AL032D90TFI030

• Memory Size: 32Mbit
• Memory Configuration: 4M X 8 / 2M X 16
• Ic Interface Type: CFI, Parallel
• Access Time: 90ns
• Supply Voltage Range: 2.7 To 3.6 V
• Memory Case Style: TSOP
• No. Of Pins: 40
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

January 19, 2007 S29AL032D_00_A9
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,
Protect another
Sector Protect:
sector address
RESET# = V
A1 = 1, A0 = 0
A1 = 1, A0 = 0
Sector Protect
from RESET#
Set up sector
Verify Sector
Cycle = 60h?
PLSCNT = 1
address with
with A6 = 0,
with A6 = 0,
Remove V
Data = 01h?
Wait 150 µs
Write reset
Read from
Wait 1
First Write
command
complete
address
START
sector?
A0 = 0
m
No
Yes
Yes
s
ID
ID
Figure 7.1 In-System Sector Protect/Unprotect Algorithms
D a t a
Yes
PLSCNT = 1
Reset
S h e e t
S29AL032D
The indicated portion
unprotected sectors
of the sector protect
prior to issuing the
Protect all sectors:
unprotect address
algorithm must be
performed for all
first sector
Sector Unprotect
Algorithm
Device failed
Increment
PLSCNT
PLSCNT
= 1000?
No
Yes
No
No
Write 60h to sector
Set up first sector
Sector Unprotect:
Unprotect: Write
Sector Unprotect
A6 = 1, A1 = 1,
A6 = 1, A1 = 1,
RESET# = V
sector address
A1 = 1, A0 = 0
40h to sector
from RESET#
Verify Sector
address with
PLSCNT = 1
Cycle = 60h?
address with
Remove V
with A6 = 1,
Data = 00h?
Write reset
Wait 15 ms
Read from
First Write
Last sector
Wait 1
protected?
command
All sectors
complete
verified?
address
START
A0 = 0
A0 = 0
m
Yes
Yes
Yes
Yes
s
ID
ID
No
No
Temporary Sector
Unprotect Mode
next sector
address
Set up
25