參數(shù)資料
型號: S71PL191HB0BFI100
廠商: SPANSION LLC
元件分類: 存儲器
英文描述: SPECIALTY MEMORY CIRCUIT, PBGA73
封裝: 9 X 13 MM, LEAD FREE, FBGA-73
文件頁數(shù): 122/172頁
文件大?。?/td> 4662K
代理商: S71PL191HB0BFI100
May 7, 2004 S29PL127H_129H_00A1
S29PL127H/S29PL129H
37
Pre l i m i n a r y
Figure 1. In-System Sector Protection/
Sector Unprotection Algorithms
Sector Protect:
Write 60h to sector
address with
A7-A0 =
00000010
Set up sector
address
Wait 100 s
Verify Sector
Protect: Write 40h
to sector address
with A7-A0 =
00000010
Read from
sector address
with A7-A0 =
00000010
START
PLSCNT = 1
RESET# = VID
Wait 4
s
First Write
Cycle = 60h?
Data = 01h?
Remove VID
from RESET#
Write reset
command
Sector Protect
complete
Yes
No
PLSCNT
= 25?
Yes
Device failed
Increment
PLSCNT
Temporary Sector
Unprotect Mode
No
Sector Unprotect:
Write 60h to sector
address with
A7-A0 =
01000010
Set up first sector
address
Wait 1.2 ms
Verify Sector
Unprotect: Write
40h to sector
address with
A7-A0 =
00000010
Read from
sector address
with A7-A0 =
00000010
START
PLSCNT = 1
RESET# = VID
Wait 4
s
Data = 00h?
Last sector
verified?
Remove VID
from RESET#
Write reset
command
Sector Unprotect
complete
Yes
No
PLSCNT
= 1000?
Yes
Device failed
Increment
PLSCNT
Temporary Sector
Unprotect Mode
No
All sectors
protected?
Yes
Protect all sectors:
The indicated portion
of the sector protect
algorithm must be
performed for all
unprotected sectors
prior to issuing the
first sector
unprotect address
Set up
next sector
address
No
Yes
No
Yes
No
Yes
No
Sector Protect
Algorithm
Sector Unprotect
Algorithm
First Write
Cycle = 60h?
Protect another
sector?
Reset
PLSCNT = 1
Remove VID
from RESET#
Write reset
command
Sector Protect
complete
Remove VID
from RESET#
Write reset
command
Sector Unprotect
complete
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