參數(shù)資料
型號(hào)： M29DW128F60NF1
廠商： 意法半導(dǎo)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(yè)，引導(dǎo)塊）3V電源，快閃記憶體
文件頁(yè)數(shù)： 24/93頁(yè)
文件大?。?/td> 719K
代理商： M29DW128F60NF1
5 Software Protection
M29DW128F
24/93
The Non-Volatile Modify Protection bits cannot be cleared individually, they can only be cleared
all at the same time by issuing a Clear Non-Volatile Modify Protection Bits command.
However if any one of the Non-Volatile Modify Protection bits has to be cleared, care should be
taken to preprogram to ‘1’ all the Non-Volatile Modify Protection Bits prior to issuing the Clear
Non-Volatile Modify Protection bits in order to prevent the over-erasure of previously cleared
Non Volatile Modify Protection bits. It is crucial to prevent over-erasure because the process
may lead to permanent damage to the Non-Volatile Modify Protection Bits and the device does
not have any built-in means of preventing over-erasure.
The device features a volatile Lock-Down bit which can be used to prevent changing the state
of the Non-Volatile Modify Protection bits. When set to ‘1’, the Non-Volatile Modify Protection
bits can no longer be modified; when set to ‘0’, the Non-Volatile Modify Protection bits can be
set and reset using the Set Non-Volatile Modify Protection Bit command and the Clear Non-
Volatile Modify Protection Bits command, respectively.
The Lock-Down bit is set by issuing the Set Lock-Down Bit Command. It is not cleared using a
command, but through a hardware reset or a power-down/power-up sequence.
The parts are shipped with the Non-Volatile Modify Protection bits set to ‘0’.
Locked blocks and Non-Volatile Locked blocks can co-exist in the same memory array.
Refer to
Table 10: Block Protection Status
and
Figure 7: Software Protection Scheme
for details
on the block protection mechanism.
5.2
Password Protection Mode
The Password Protection mode provides a more advanced level of software protection than the
Standard Protection mode.
Prior to entering the Password Protection mode, it is necessary to set a password and to verify
it (see
Password Program command
and
Password Verify command
). The Password Protection
mode is then activated by programming the Password Protection Mode Lock bit to ‘1’. The
Reset/Block Temporary Unprotect pin, RP, can be at V
ID
or at V
IH
.
This operation is not reversible and once the bit is programmed the device will permanently
remain in the Password Protection mode.
The Password Protection mode uses the same protection mechanisms as the Standard
Protection mode (Block Lock/Unlock, Non-Volatile Protection).
5.2.1
Block Lock/Unlock Protection
The Block Lock/Unlock Protection operates exactly in the same way as in the Standard
Protection mode.
5.2.2
Non-Volatile Protection
The Non-Volatile Protection is more advanced in the Password Protection mode.
In this mode, the Lock-Down bit cannot be cleared through a hardware reset or a power-down/
power-up sequence.
The Lock-Down bit is cleared by issuing the Password Protection Unlock command along with
the correct password.
相關(guān)PDF資料
PDF描述
M29DW128F60NF1E 128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block) 3V Supply, Flash Memory
M29DW128F60NF1F 128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block) 3V Supply, Flash Memory
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M29DW128F60NF1E 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
M29DW128F60NF1F 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
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(chǔ)類型:Flash 存儲(chǔ)容量:2 MB 結(jié)構(gòu):256 K x 8 定時(shí)類型: 接口類型:SPI 訪問時(shí)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(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel
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