s29al016j Meet Spansion Inc., s29al016j Datasheet - Page 23

• Manufacturer Part Number: s29al016j
• Description: 16 Megabit 2 M X 8-bit/1 M X 16-bit Cmos 3.0 Volt-only Boot Sector Flash Memory
• Manufacturer: Meet Spansion Inc.

May 23, 2008 S29AL016J_00_05
The Secured Silicon Sector protection must be used with caution since, once protected, there is no procedure
available for unprotecting the Secured Silicon Sector area, and none of the bits in the Secured Silicon Sector
memory space can be modified in any way.
D a t a
S h e e t
( A d v a n c e
Figure 8.1 Secured Silicon Sector Protect Verify
Write 40h to SecSi
Read from SecSi
Sector address
Sector address
S29AL016J
A1 = 1, A0 = 0
A1 = 1, A0 = 0
Write 60h to
any address
with A6 = 0,
with A6 = 0,
RESET# =
Wait 1 ms
V
START
IH
I n f o r m a t i o n )
or V
ID
Remove V
SecSi Sector is
SecSi Sector is
If data = 00h,
If data = 01h,
from RESET#
Protect Verify
unprotected.
SecSi Sector
Write reset
protected.
command
complete
IH
or V
ID
23