參數(shù)資料
型號(hào)： M25PE16-VMW6P
廠商： 意法半導(dǎo)體
元件分類： DRAM
英文描述： 4 Mbit Uniform Sector, Serial Flash Memory
中文描述： 4兆位統(tǒng)一部門，串行閃存
文件頁(yè)數(shù)： 15/56頁(yè)
文件大?。?/td> 334K
代理商： M25PE16-VMW6P
M25PE16
Operating features
15/56
4.8.2
Specific Hardware and Software protections
There are two Software Protected modes, SPM1 and SPM2, that can be combined to
protect the memory array as required. The SPM2 can be Hardware protected with the help
of the W input pin.
SPM1 and SPM2
●
The first Software Protected mode (SPM1)
is managed by specific Lock Registers
assigned to each 64 Kbyte sector.
The Lock Registers can be read and written using the Read Lock Register (RDLR) and
Write to Lock Register (WRLR) instructions.
In each Lock Register two bits control the protection of each sector: the Write Lock Bit
and the Lock Down Bit.
–
Write Lock Bit:
The Write Lock Bit determines whether the contents of the sector can be modified
(using the Write, Program or Erase instructions). When the Write Lock Bit is set,
‘1’, the sector is write protected – any operations that attempt to change the data
in the sector will fail. When the Write Lock Bit is reset to ‘0’, the sector is not write
protected by the Lock Register, and may be modified.
–
Lock Down Bit:
The Lock Down Bit provides a mechanism for protecting software data from simple
hacking and malicious attack. When the Lock Down Bit is set, ‘1’, further
modification to the Write Lock and Lock Down Bits cannot be performed. A reset,
or power-up, is required before changes to these bits can be made. When the
Lock Down Bit is reset, ‘0’, the Write Lock and Lock Down Bits can be changed.
The Write Lock Bit and the Lock Down Bit are volatile and their value is reset to ‘0’ after
a Power-Down or a Reset (see
Table 12: Device status after a RESET Low pulse
).
The definition of the Lock Register bits is given in
Table 9: Lock Register out
.
Table 2.
Software protection truth table (Sectors 0 to 31, 64 Kbyte granularity)
Sector Lock
Register
Protection Status
Lock
Down Bit
Write
Lock Bit
0
0
Sector Unprotected from Program/Erase/Write operations, Protection Status
Reversible
0
1
Sector Protected from Program/Erase/Write operations, Protection Status
Reversible
1
0
Sector Unprotected from Program/Erase/Write operations,
Sector Protection Status cannot be changed except by a Reset or Power-up.
1
1
Sector Protected from Program/Erase/Write operations,
Sector Protection Status cannot be changed except by a Reset or Power-up.
相關(guān)PDF資料
PDF描述
M25PE16-VMW6TG 4 Mbit Uniform Sector, Serial Flash Memory
M25PE16-VMW6TP 4 Mbit Uniform Sector, Serial Flash Memory
M25PE40 4 Mbit Uniform Sector, Serial Flash Memory
M25PE40VMN6G 4 Mbit Uniform Sector, Serial Flash Memory
M25PE40VMN6P 4 Mbit Uniform Sector, Serial Flash Memory
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M25PE16-VMW6TG 功能描述:閃存 16 Mbit Lo Vltg Page Erasable Seral 閃存 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
M25PE16-VMW6TP 制造商:NUMONYX 制造商全稱:Numonyx B.V 功能描述:16-Mbit, page-erasable serial flash memory with byte-alterability, 75 MHz SPI bus, standard pinout
M25PE20 制造商:NUMONYX 制造商全稱:Numonyx B.V 功能描述:1 and 2 Mbit, page-erasable serial Flash memories with byte alterability, 75 MHz SPI bus, standard pinout
M25PE20_07 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:1 and 2 Mbit, low voltage, Page-Erasable Serial Flash memories with Byte-Alterability, 50 MHz SPI bus, standard pinout
M25PE20-V6D11 制造商:Micron Technology Inc 功能描述:SERIAL NOR 制造商:Micron Technology Inc 功能描述:SERIAL NOR - Gel-pak, waffle pack, wafer, diced wafer on film
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