參數(shù)資料
型號(hào)： M25PX32-VMW6F
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)： 16/63頁(yè)
文件大小： 394K
代理商： M25PX32-VMW6F
Operating features
M25PX32
16/63
4.8.2
Specific hardware and software protection
There are two software protected modes, SPM1 and SPM2, that can be combined to protect
the memory array as required. The SPM2 can be locked by hardware 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 to
‘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 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 definition of the Lock Register bits is given in
Table 9: Lock Register out
.
●
Table 2.
●
the second software protected mode (SPM2) uses the Block Protect bits (see
Section 6.4.3: BP2, BP1, BP0 bits
) and the Top/Bottom bit (see
Section 6.4.4: TB bit
) to
allow part of the memory to be configured as read-only.
Software protection truth table (Sectors 0 to 63, 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 Power-up.
1
1
Sector protected from Program/Erase/Write operations,
Sector protection status cannot be changed except by a Power-up.
相關(guān)PDF資料
PDF描述
M25PX32-VMF6E 4 Mbit Uniform Sector, Serial Flash Memory
M25PX32-VMF6F 4 Mbit Uniform Sector, Serial Flash Memory
M27128A NMOS 128K 16K x 8 UV EPROM
M27128A-20F1 NMOS 128K 16K x 8 UV EPROM
M27128A-20F6 NMOS 128K 16K x 8 UV EPROM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M25PX32-VMW6FBA 制造商:Micron Technology Inc 功能描述:AUTOMOTIVE - Tape and Reel
M25PX32-VMW6Y 制造商:Micron Technology Inc 功能描述:SERIAL NOR - Trays
M25PX32-VZM6E 制造商:Micron Technology Inc 功能描述:SERIAL NOR - Trays 制造商:Micron Technology Inc 功能描述:IC FLASH 32MBIT 75MHZ 24TBGA
M25PX32-VZM6F 功能描述:IC FLASH 32MBIT 75MHZ 24TBGA RoHS:是 類別:集成電路 (IC) >> 存儲(chǔ)器 系列:Forté™ 標(biāo)準(zhǔn)包裝:60 系列:- 格式 - 存儲(chǔ)器:EEPROMs - 串行 存儲(chǔ)器類型:EEPROM 存儲(chǔ)容量:16K (2K x 8) 速度:2MHz 接口:SPI 3 線串行 電源電壓:2.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-PDIP 包裝:管件 產(chǎn)品目錄頁(yè)面:1449 (CN2011-ZH PDF)
M25PX32-VZM6FBA 制造商:Micron Technology Inc 功能描述:SERIAL NOR - Tape and Reel
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