s71jl064ha0bfw62 Advanced Micro Devices, s71jl064ha0bfw62 Datasheet - Page 53

• Manufacturer Part Number: s71jl064ha0bfw62
• Description: Stacked Multi-chip Product Mcp Flash Memory And Psram Cmos 3.0volt-only, Simultaneous Operation Flash Memories And Static Ram/pseudo-static Ram
• Manufacturer: Advanced Micro Devices

February 25, 2004 S71JLxxxHxx_00A1
Sector Protect
Temporary Sector
Unprotect Mode
SecSi™ (Secured Silicon) Sector Flash Memory Region
Device failed
Algorithm
Increment
PLSCNT
PLSCNT
= 25?
No
Yes
The SecSi (Secured Silicon) Sector feature provides a Flash memory region that
enables permanent part identification through an Electronic Serial Number
(ESN). The SecSi Sector is 256 bytes in length, and uses a SecSi Sector Indicator
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:
Figure 2. In-System Sector Protect/Unprotect Algorithms
sector address
RESET# = V
Sector Protect
Verify Sector
Set up sector
with A6 = 0,
with A6 = 0,
from RESET#
Cycle = 60h?
address with
Remove V
PLSCNT = 1
Wait 150 µs
Data = 01h?
Write reset
First Write
Read from
Wait 1 ms
command
complete
address
A0 = 0
sector?
START
No
Yes
Yes
ID
ID
P r e l i m i n a r y
Yes
PLSCNT = 1
Reset
S29JL064H
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
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,
A1 = 1, A0 = 0
sector address
RESET# = V
40h to sector
Verify Sector
address with
from RESET#
Cycle = 60h?
with A6 = 1,
address with
Remove V
Data = 00h?
PLSCNT = 1
Write reset
Wait 15 ms
Read from
First Write
Last sector
Wait 1 ms
command
All sectors
protected?
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
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