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參數(shù)資料
| 型號： | S29CD016J1MQFI103 |
| 廠商： | Spansion Inc. |
| 英文描述： | 32/16 Megabit CMOS 2.6 Volt or 3.3 Volt-only Simultaneous Read/Write, Dual Boot, Burst Mode Flash Memory with VersatileI/O |
| 中文描述： | 32/16兆位的CMOS 2.6伏或3.3伏，只有同時讀/寫，雙啟動，突發(fā)模式閃存記憶體與VersatileI /輸出 |
| 文件頁數(shù)： | 43/76頁 |
| 文件大?。?/td> | 1245K |
| 代理商： | S29CD016J1MQFI103 |
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September27,2006 S29CD-J_CL-J_00_B1
S29CD-J & S29CL-J Flash Family
41
D a t a
S h e e t
( P r e l i m i n a r y )
Figure 9.3
PPB Erase Operation
9.3
Persistent Protection Bit Lock Bit
The Persistent Protection Bit Lock Bit is a global volatile bit for all sectors. When set to “1”, it locks all PPBs;
when set to “0”, it allows the PPBs to be changed. There is only one PPB Lock Bit per device.
Notes
1. No software command sequence unlocks this bit unless the device is in the password protection
mode; only a hardware reset or a power-up clears this bit.
2. The PPB Lock Bit must be set only after all PPBs are configured to the desired settings.
9.4
Dynamic Protection Bits
A Dynamic Protection Bit (DYB) is volatile and unique for each sector and can be individually modified. DYBs
only control the protection scheme for unprotected sectors that have their PPBs set to “0”. By issuing the DYB
Set or Clear command sequences, the DYBS are set or cleared, thus placing each sector in the protected or
unprotected state respectively. This feature allows software to easily protect sectors against inadvertent
changes, yet does not prevent the easy removal of protection when changes are needed.
Notes
1. The DYBs can be set or cleared as often as needed with the DYB Write Command.
2. When the parts are first shipped, the PPBs are cleared, the DYBs are cleared, and PPB Lock is
defaulted to power up in the cleared state – meaning the PPBs are changeable. The DYB are also
always cleared after a power-up or reset.
3. It is possible to have sectors that are persistently locked with sectors that are left in the dynamic
state.
4. The DYB Set or Clear commands for the dynamic sectors signify the protected or unprotected state
of the sectors respectively. However, if there is a need to change the status of the persistently
Either poll DQ6 in the
s
m
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ll
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nk
a
nd w
a
it for
it to
s
top toggling OR
w
a
it 20 m
s
DQ0 = 0
Write 0x60 to WP
Write 0x40 to WP
Re
a
d from WP
YE
S
NO
YE
S
NO
Done
Error
Write 0xAA to 0x555
Write 0x55 to 0x2AA
Write 0x60 to 0x555
5th
a
ttempt
Note:
Re
a
d
s
from the
s
m
a
ll
ba
nk
a
t thi
s
point
ret
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rn the
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t
us
of the
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tion, not re
a
d
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rr
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y
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.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| S29CD016J1MQFI133 | 32/16 Megabit CMOS 2.6 Volt or 3.3 Volt-only Simultaneous Read/Write, Dual Boot, Burst Mode Flash Memory with VersatileI/O |
| S29CD016J1MQFM000 | 32/16 Megabit CMOS 2.6 Volt or 3.3 Volt-only Simultaneous Read/Write, Dual Boot, Burst Mode Flash Memory with VersatileI/O |
| S29CD016J1MQFM002 | 32/16 Megabit CMOS 2.6 Volt or 3.3 Volt-only Simultaneous Read/Write, Dual Boot, Burst Mode Flash Memory with VersatileI/O |
| S29CD016J1MQFM003 | 32/16 Megabit CMOS 2.6 Volt or 3.3 Volt-only Simultaneous Read/Write, Dual Boot, Burst Mode Flash Memory with VersatileI/O |
| S29CD016J1MQFM033 | 32/16 Megabit CMOS 2.6 Volt or 3.3 Volt-only Simultaneous Read/Write, Dual Boot, Burst Mode Flash Memory with VersatileI/O |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S29CD016J1MQFI133 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:32/16 Megabit CMOS 2.6 Volt or 3.3 Volt-only Simultaneous Read/Write, Dual Boot, Burst Mode Flash Memory with VersatileI/O |
| S29CD016J1MQFM000 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:32/16 Megabit CMOS 2.6 Volt or 3.3 Volt-only Simultaneous Read/Write, Dual Boot, Burst Mode Flash Memory with VersatileI/O |
| S29CD016J1MQFM002 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:32/16 Megabit CMOS 2.6 Volt or 3.3 Volt-only Simultaneous Read/Write, Dual Boot, Burst Mode Flash Memory with VersatileI/O |
| S29CD016J1MQFM003 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:32/16 Megabit CMOS 2.6 Volt or 3.3 Volt-only Simultaneous Read/Write, Dual Boot, Burst Mode Flash Memory with VersatileI/O |
| S29CD016J1MQFM033 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:32/16 Megabit CMOS 2.6 Volt or 3.3 Volt-only Simultaneous Read/Write, Dual Boot, Burst Mode Flash Memory with VersatileI/O |
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