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參數(shù)資料
| 型號： | M29DW128F60NF1F |
| 廠商： | 意法半導體 |
| 英文描述： | 128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block) 3V Supply, Flash Memory |
| 中文描述： | 128兆位（16Mb的x8或和8Mb x16插槽，多行，頁，引導塊）3V電源，快閃記憶體 |
| 文件頁數(shù)： | 82/93頁 |
| 文件大?。?/td> | 719K |
| 代理商： | M29DW128F60NF1F |
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12 Part numbering
M29DW128F
82/93
Appendix C Extended Memory Block
The M29DW128F has an extra block, the Extended Block, that can be accessed using a
dedicated command.
This Extended Block is 128 Words in x16 mode and 256 Bytes in x8 mode. It is used as a
security block (to provide a permanent security identification number) or to store additional
information.
The Extended Block is divided into two memory areas of 64 Words each:
The first one is Factory Locked.
The second one is Customer Lockable. It is up to the customer to protect it from program
operations. Its status is indicated by bit DQ6 and DQ7. When DQ7 is set to ‘1’ and DQ6 to
‘0’, it indicates that this second memory area is Customer Lockable. When DQ7 and DQ6
are both set to ‘1’, it indicates that the second part of the Extended Block is Customer
Locked and protected from program operations. Bit DQ7 being permanently locked to
either ‘1’ or ‘0’ is another security feature which ensures that a customer lockable device
cannot be used instead of a factory locked one.
●
●
Bits DQ6 and DQ7 are the most significant bits in the Extended Block Protection Indicator
and
a specific procedure must be followed to read it. See “
Section 3.6.2: Verify Extended Block
Protection Indicator
” and
Table 5
and
Table 8
, Block Protection, for details of how to read bit
DQ7.
The Extended Block can only be accessed when the device is in Extended Block mode. For
details of how the Extended Block mode is entered and exited, refer to the
Program command
and
Exit Extended Block command
paragraphs, and to
Table 15
and
Table 16
, Block Protection
Commands.
C.1
Factory Locked Section of the Extended Block
The first section of The Extended Block is permanently protected from program operations and
cannot be unprotected. The Random Number, Electronic Serial Number (ESN) and Security
Identification Number (see
Table 41: Extended Block Address and Data
) are written in this
section in the factory.
C.2
Customer Lockable Section of the Extended Block
The device is delivered with the second section of the Extended Block "Customer Lockable":
bits DQ7 and DQ6 are set to '1' and '0' respectively. It is up to the customer to program and
protect this section of the Extended Block but care must be taken because the protection is not
reversible.
There are three ways of protecting this section:
Issue the Enter Extended Block command to place the device in Extended Block mode,
then use the In-System Technique with RP either at V
IH
or at V
ID
. Refer to
In-System
Technique
in
Appendix D: High Voltage Block Protection
, and to the corresponding
flowcharts
Figure 25
and
Figure 26
for a detailed explanation of the technique).
Issue the Enter Extended Block command to place the device in Extended Block mode,
then use the Programmer Technique. Refer to
Programmer Technique
in
Appendix D: High
●
●
相關PDF資料 |
PDF描述 |
|---|---|
| M29DW128F60NF1T | 128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block) 3V Supply, Flash Memory |
| M29DW128F60NF6 | 128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block) 3V Supply, Flash Memory |
| M29DW128F60NF6E | 128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block) 3V Supply, Flash Memory |
| M29DW128F60NF6F | 128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block) 3V Supply, Flash Memory |
| M29DW128F60NF6T | 128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block) 3V Supply, Flash Memory |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M29DW128F60NF1T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block) 3V Supply, Flash Memory |
| M29DW128F60NF6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block) 3V Supply, Flash Memory |
| M29DW128F60NF6E | 功能描述:閃存 128 Mbit RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)總線寬度:1 bit 存儲類型:Flash 存儲容量:2 MB 結(jié)構(gòu):256 K x 8 定時類型: 接口類型:SPI 訪問時間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| M29DW128F60NF6F | 制造商:NUMONYX 制造商全稱:Numonyx B.V 功能描述:128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block) 3V supply Flash memory |
| M29DW128F60NF6T | 制造商:NUMONYX 制造商全稱:Numonyx B.V 功能描述:128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block) 3V supply Flash memory |
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