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参数资料
| 型号： | M95320-WDW6TG |
| 厂商： | NUMONYX |
| 元件分类： | PROM |
| 英文描述： | 4K X 8 FLASH 2.7V PROM, PDSO8 |
| 封装： | 0.169 INCH, ROHS COMPLIANT, TSSOP-8 |
| 文件页数： | 11/45页 |
| 文件大小： | 440K |
| 代理商： | M95320-WDW6TG |
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M95320, M95640, M95320-x, M95640-x
Instructions
The protection features of the device are summarized in Table 2.
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 (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
(BP1, BP0) bits of the Status Register, can be used.
Table 5.
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 (BP1, BP0) bits of the Status Register, as shown in Table 2.
Unprotected
Area(1)
10
Software
Protected
(SPM)
Status Register is Writable
(if the WREN instruction
has set the WEL bit)
The values in the BP1 and
BP0 bits can be changed
Write Protected
Ready to accept
Write instructions
00
11
01
Hardware
Protected
(HPM)
Status Register is
Hardware write protected
The values in the BP1 and
BP0 bits cannot be
changed
Write Protected
Ready to accept
Write instructions
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M95320-WDW6TG/P | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:32 Kbit serial SPI bus EEPROMs with high-speed clock |
| M95320-WDW6TG/PC | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:32 Kbit serial SPI bus EEPROMs with high-speed clock |
| M95320WDW6TP | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:32 Kbit and 64 Kbit serial SPI bus EEPROMs with high-speed clock |
| M95320-WDW6TP | 功能描述:电可擦除可编程只读存储器 2.5 V to 5.5V 32k RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 |
| M95320-WDW6TP/P | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:32 Kbit serial SPI bus EEPROMs with high-speed clock |
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