S29AL016D90TFI020 Spansion Inc., S29AL016D90TFI020 Datasheet - Page 17

• Manufacturer Part Number: S29AL016D90TFI020
• Description: Flash Memory IC
• Manufacturer: Spansion Inc.

Specifications of S29AL016D90TFI020

• Memory Size: 16Mbit
• Ic Interface Type: Parallel
• Access Time: 90ns
• Memory Case Style: TSOP
• No. Of Pins: 48
• Operating Temperature Range: -40°C To +85°C
• Peak Reflow Compatible (260 C): Yes
• Termination Type: SMD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

December 17, 2004 S29AL016D_00_A2
Sector Protect
Temporary Sector
Unprotect Mode
Algorithm
Device failed
Increment
PLSCNT
PLSCNT
= 25?
No
Yes
No
No
Write 60h to sector
Protect: Write 40h
to sector address
A6 = 0, A1 = 1,
Sector Protect:
Protect another
RESET# = V
sector address
A1 = 1, A0 = 0
A1 = 1, A0 = 0
Sector Protect
from RESET#
Verify Sector
Set up sector
PLSCNT = 1
Cycle = 60h?
Remove V
address with
with A6 = 0,
with A6 = 0,
Data = 01h?
Wait 150 µs
Write reset
Read from
First Write
command
Wait 1 µs
complete
Figure 2. In-System Sector Protect/Unprotect Algorithms
address
START
sector?
A0 = 0
Yes
Yes
No
ID
ID
P r e l i m i n a r y
Yes
PLSCNT = 1
Reset
S29AL016D
The indicated portion
Protect all sectors:
unprotected sectors
of the sector protect
prior to issuing the
unprotect address
algorithm must be
performed for all
Sector Unprotect
first sector
Algorithm
Device failed
Increment
PLSCNT
PLSCNT
= 1000?
Yes
No
No
No
Write 60h to sector
Set up first sector
Sector Unprotect:
Unprotect: Write
Sector Unprotect
A6 = 1, A1 = 1,
A6 = 1, A1 = 1,
sector address
RESET# = V
A1 = 1, A0 = 0
40h to sector
from RESET#
Verify Sector
address with
Cycle = 60h?
PLSCNT = 1
address with
with A6 = 1,
Remove V
Data = 00h?
Write reset
Wait 15 ms
Read from
Last sector
First Write
command
All sectors
protected?
Wait 1 µs
complete
address
verified?
START
A0 = 0
A0 = 0
Yes
Yes
Yes
Yes
ID
ID
No
No
Temporary Sector
Unprotect Mode
next sector
address
Set up
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