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參數(shù)資料
| 型號： | M25P16-VMN3TP |
| 廠商： | 意法半導體 |
| 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 |
| 文件頁數(shù)： | 25/55頁 |
| 文件大小： | 335K |
| 代理商： | M25P16-VMN3TP |
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M25P16
Instructions
25/55
Table 7.
The protection features of the device are summarized in
Table 7
.
When the Status Register Write Disable (SRWD) bit of the Status Register is 0 (its initial
delivery state), it is possible to write to the Status Register provided that the Write Enable
Latch (WEL) bit has previously been set by a Write Enable (WREN) instruction, regardless
of the whether Write Protect (W) is driven High or Low.
When the Status Register Write Disable (SRWD) bit of the Status Register is set to 1, two
cases need to be considered, depending on the state of Write Protect (W):
If Write Protect (W) is driven High, it is possible to write to the Status Register provided
that the Write Enable Latch (WEL) bit has previously been set by a Write Enable
(WREN) instruction.
If Write Protect (W) is driven Low, it is
not
possible to write to the Status Register
even
if the Write Enable Latch (WEL) bit has previously been set by a Write Enable (WREN)
instruction. (Attempts to write to the Status Register are rejected, and are not accepted
for execution). As a consequence, all the data bytes in the memory area that are
software protected (SPM) by the Block Protect (BP2, BP1, BP0) bits of the Status
Register, are also hardware protected against data modification.
●
●
Regardless of the order of the two events, the Hardware Protected Mode (HPM) can be
entered:
by setting the Status Register Write Disable (SRWD) bit after driving Write Protect (W)
Low
or by driving Write Protect (W) Low after setting the Status Register Write Disable
(SRWD) bit.
●
●
The only way to exit the Hardware Protected Mode (HPM) once entered is to pull Write
Protect (W) High.
If Write Protect (W) is permanently tied High, the Hardware Protected Mode (HPM) can
never be activated, and only the Software Protected Mode (SPM), using the Block Protect
(BP2, BP1, BP0) bits of the Status Register, can be used.
Protection modes
W
Signal
SRWD
Bit
Mode
Write Protection of the
Status Register
Memory Content
Protected Area
(1)
1.
As defined by the values in the Block Protect (BP2, BP1, BP0) bits of the Status Register, as shown in
Unprotected
Area
(1)
1
0
Software
Protected
(SPM)
Status Register is Writable
(if the WREN instruction
has set the WEL bit)
The values in the SRWD,
BP2, BP1 and BP0 bits
can be changed
Protected against
Page Program,
Sector Erase and
Bulk Erase
Ready to accept
Page Program and
Sector Erase
instructions
0
0
1
1
0
1
Hardware
Protected
(HPM)
Status Register is
Hardware write protected
The values in the SRWD,
BP2, BP1 and BP0 bits
cannot be changed
Protected against
Page Program,
Sector Erase and
Bulk Erase
Ready to accept
Page Program and
Sector Erase
instructions
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M25P16-VMN3TP/4 | 功能描述:IC FLASH 16MBIT 75MHZ 8SOIC RoHS:是 類別:集成電路 (IC) >> 存儲器 系列:Forté™ 產(chǎn)品變化通告:Product Discontinuation 26/Apr/2010 標準包裝:136 系列:- 格式 - 存儲器:RAM 存儲器類型:SRAM - 同步，DDR II 存儲容量:18M（1M x 18） 速度:200MHz 接口:并聯(lián) 電源電壓:1.7 V ~ 1.9 V 工作溫度:0°C ~ 70°C 封裝/外殼:165-TBGA 供應商設備封裝:165-CABGA（13x15） 包裝:托盤 其它名稱:71P71804S200BQ |
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| M25P16-VMN3YPB | 制造商:Micron Technology Inc 功能描述:AUTOMOTIVE, SERIAL NOR, 16MB - Trays 制造商:Micron Technology Inc 功能描述:IC FLASH 16MBIT 75MHZ 8SO |
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