參數(shù)資料
型號(hào): S29PL127N70GFW003
廠商: SPANSION LLC
元件分類: DRAM
英文描述: 740; 38000/740 Series; Microcontroller; Bit Size: 8-bit; ROM: 32K; RAM: 1K; ROM Type: Mask ROM; CPU: 740 core; Minimum Instruction Execution Time (ns): 500 (@8MHz); Operating Frequency / Supply Voltage: 8MHz/3.0 to 3.6V; Operating Ambient Temperature (°C): -20 to 85; Package Code: PLQP0080KB-A (80P6Q-A)
中文描述: 8M X 16 FLASH 3V PROM, 70 ns, PBGA64
封裝: 8 X 11.60 MM, LEAD FREE, FBGA-64
文件頁數(shù): 48/74頁
文件大小: 1968K
代理商: S29PL127N70GFW003
48
S29PL-N MirrorBit
Flash Family
S29PL-N_00_A5 June 6, 2007
D a t a
S h e e t
( P r e l i m i n a r y )
Figure 8.2
Lock Register Program Algorithm
8.6
Advanced Sector Protection Software Examples
Table 8.2
contains all possible combinations of the DYB, PPB, and PPB Lock Bit relating to the status of the
sector. In summary, if the PPB Lock Bit is locked (set to
0
), no changes to the PPBs are allowed. The PPB
Lock Bit can only be unlocked (reset to
1
) through a hardware reset or power cycle. See also
Figure 8.1
on page 44
for an overview of the
Advanced Sector Protection
feature.
Write Unlock Cycle
s
:
Addre
ss
555h, D
a
t
a
AAh
Addre
ss
2AAh, D
a
t
a
55h
Write
Enter Lock Regi
s
ter Comm
a
nd:
Addre
ss
555h, D
a
t
a
40h
Progr
a
m Lock Regi
s
ter D
a
t
a
Addre
ss
XXXh, D
a
t
a
A0h
Addre
ss
77h*, D
a
t
a
PD
Unlock Cycle 1
Unlock Cycle 2
XXXh = Addre
ss
don’t c
a
re
* Not on f
u
t
u
re device
s
Progr
a
m D
a
t
a
(PD):
S
ee text for Lock Regi
s
ter definition
s
C
au
tion:
Lock d
a
t
a
m
a
y only
b
e prog
a
mmed once.
W
a
it 4
μ
s
PA
SS
. Write Lock Regi
s
ter
Exit Comm
a
nd:
Addre
ss
XXXh, D
a
t
a
90h
Addre
ss
XXXh, D
a
t
a
00h
Device ret
u
rn
s
to re
a
ding
a
rr
a
y.
Perform Polling Algorithm
(
s
ee Write Oper
a
tion
S
t
a
t
us
flowch
a
rt)
Ye
s
Ye
s
No
No
Done
DQ5 = 1
Error condition (Exceeded Timing Limits)
FAIL. Write re
s
t comm
a
nd
to ret
u
rn to re
a
ding
a
rr
a
y.
Table 8.2
Sector Protection Schemes
Unique Device PPB Lock Bit
0 = locked, 1 = unlocked
Sector PPB
0 = protected
1 = unprotected
Sector DYB
0 = protected
1 = unprotected
Sector Protection Status
Any Sector
0
0
x
Protected through PPB
Any Sector
0
0
x
Protected through PPB
Any Sector
0
1
1
Unprotected
Any Sector
0
1
0
Protected through DYB
Any Sector
1
0
x
Protected through PPB
Any Sector
1
0
x
Protected through PPB
Any Sector
1
1
0
Protected through DYB
Any Sector
1
1
1
Unprotected
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