參數(shù)資料
型號(hào)： M25P32
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
文件頁數(shù)： 13/48頁
文件大?。?/td> 386K
代理商： M25P32
M25P32
Operating features
13/48
4.7
Protection Modes
The environments where non-volatile memory devices are used can be very noisy. No SPI
device can operate correctly in the presence of excessive noise. To help combat this, the
M25P32 features the following data protection mechanisms:
Power On Reset and an internal timer (t
PUW
) can provide protection against inadvertant
changes while the power supply is outside the operating specification.
Program, Erase and Write Status Register instructions are checked that they consist of
a number of clock pulses that is a multiple of eight, before they are accepted for
execution.
All instructions that modify data must be preceded by a Write Enable (WREN)
instruction to set the Write Enable Latch (WEL) bit. This bit is returned to its reset state
by the following events:
–
Power-up
–
Write Disable (WRDI) instruction completion
–
Write Status Register (WRSR) instruction completion
–
Page Program (PP) instruction completion
–
Sector Erase (SE) instruction completion
–
Bulk Erase (BE) instruction completion
The Block Protect (BP2, BP1, BP0) bits allow part of the memory to be configured as
read-only. This is the Software Protected Mode (SPM).
The Write Protect (W/V
PP
) signal allows the Block Protect (BP2, BP1, BP0) bits and
Status Register Write Disable (SRWD) bit to be protected. This is the Hardware
Protected Mode (HPM).
In addition to the low power consumption feature, the Deep Power-down mode offers
extra software protection, as all Write, Program and Erase instructions are ignored.
●
●
●
●
●
●
Table 2.
Protected Area Sizes
Status Register
Content
Memory Content
BP2
Bit
BP1
Bit
BP0
Bit
Protected Area
Unprotected Area
0
0
0
none
All sectors
(1)
(64 sectors: 0 to 63)
1.
The device is ready to accept a Bulk Erase instruction if, and only if, all Block Protect (BP2, BP1, BP0) are
0.
0
0
1
Upper 64th (Sector 63)
Lower 63/64ths (63 sectors: 0 to 62)
0
1
0
Upper 32nd (two sectors: 62 and 63)
Lower 31/32nds (62 sectors: 0 to 61)
0
1
1
Upper sixteenth (four sectors: 60 to
63)
Lower 15/16ths (60 sectors: 0 to 59)
1
0
0
Upper eighth (eight sectors: 56 to 63) Lower seven-eighths (56 sectors: 0 to 55)
1
0
1
Upper quarter (sixteen sectors: 48 to
63)
Lower three-quarters (48 sectors: 0 to 47)
1
1
0
Upper half (thirty-two sectors: 32 to
63)
Lower half (32 sectors: 0 to 31)
1
1
1
All sectors (64 sectors: 0 to 63)
none
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M25P40 4 Mbit Uniform Sector, Serial Flash Memory
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M25P32-V6D11 制造商:Micron Technology Inc 功能描述:32MX1 NOR FLASH DIE-COM 3.0V 制造商:Micron Technology Inc 功能描述:SERIAL NOR - Gel-pak, waffle pack, wafer, diced wafer on film
M25P32VME3 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:512 Kbit to 32 Mbit, Low Voltage, Serial Flash Memory With 40 MHz or 50 MHz SPI Bus Interface
M25P32VME3G 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:512 Kbit to 32 Mbit, Low Voltage, Serial Flash Memory With 40 MHz or 50 MHz SPI Bus Interface
M25P32VME3P 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:512 Kbit to 32 Mbit, Low Voltage, Serial Flash Memory With 40 MHz or 50 MHz SPI Bus Interface
M25P32VME3T 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:512 Kbit to 32 Mbit, Low Voltage, Serial Flash Memory With 40 MHz or 50 MHz SPI Bus Interface
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