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參數(shù)資料
| 型號： | EN25P80-50HI |
| 廠商： | Eon Silicon Solution Inc. |
| 元件分類： | FLASH |
| 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)： | 6/30頁 |
| 文件大?。?/td> | 396K |
| 代理商： | EN25P80-50HI |
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Status Register.
The Status Register contains a number of status and control bits that can be read or set
(as appropriate) by specific instructions.
BUSY bit.
The BUSY bit indicates whether the memory is busy with a Write Status Register, Program or
Erase cycle.
WEL bit.
The Write Enable Latch (WEL) bit indicates the status of the internal Write Enable Latch.
BP2, BP1, BP0 bits.
The Block Protect (BP2, BP1, BP0) bits are non-volatile. They define the size of the
area to be software protected against Program and Erase instructions.
SRP bit.
The Status Register Protect (SRP) bit is operated in conjunction with the Write Protect (WP#)
signal. The Status Register Protect (SRP) bit and Write Protect (WP#) signal allow the device to be put in
the Hardware Protected mode. In this mode, the non-volatile bits of the Status Register (SRP, BP2, BP1,
BP0) become read-only bits.
Write Protection
Applications that use non-volatile memory must take into consideration the possibility of noise and other
adverse system conditions that may compromise data integrity. To address this concern the EN25P80
provides the following data protection mechanisms:
z
Power-On Reset and an internal timer (t
PUW
) can provide protection against inadvertent changes
while the power supply is outside the operating specification.
z
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.
z
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 or Write Status Register (WRSR) instruction
completion or Page Program (PP) instruction completion or Sector Erase (SE)instruction
completion or Bulk Erase (BE) instruction completion or
z
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).
z
The Write Protect (WP#) signal allows the Block Protect (BP2, BP1, BP0) bits and Status Register
Protect (SRP) bit to be protected. This is the Hardware Protected Mode (HPM).
z
In addition to the low power consumption feature, the Deep Power-down mode offers extra software
protection from inadvertent Write, Program and Erase instructions, as all instructions are ignored
except one particular instruction (the Release from Deep Power-down instruction).
TABLE 3. Protected Area Sizes Sector Organization
This Data Sheet may be revised by subsequent versions 2004 Eon Silicon Solution, Inc., www.essi.com.tw
or modifications due to changes in technical specifications.
Rev. C, Issue Date: 2006/12/25
EN25P80
Status Register
Content
BP2
Bit
Bit
1
1
1
1
1
0
1
0
0
1
0
1
0
0
0
0
Memory Content
Addresses
000000h-0FFFFFh
000000h-0FFFFFh
000000h-0FFFFFh
080000h-0FFFFFh
0C0000h-0FFFFFh
0E0000h-0FFFFFh
0F0000h-0FFFFFh
None
BP1
BP0
Bit
1
0
1
0
1
0
1
0
Protect Sectors
Density(KB)
1024KB
1024KB
1024KB
512KB
256KB
128KB
64KB
None
Portion
All
All
All
Sector 8 to 15
Sector 12 to 15
Sector 14 to 15
Sector 15
None
All
All
All
Upper 1/2
Upper 1/4
Upper 1/8
Upper 1/16
None
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EN25P80-50VC | 4 Mbit Uniform Sector, Serial Flash Memory |
| EN25P80-50VCP | 4 Mbit Uniform Sector, Serial Flash Memory |
| EN25P80-50VI | 4 Mbit Uniform Sector, Serial Flash Memory |
| EN25P80-50VIP | 4 Mbit Uniform Sector, Serial Flash Memory |
| EN25P80-75HC | 4 Mbit Uniform Sector, Serial Flash Memory |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EN25P80-50HIP | 制造商:EON SILICON SOLUTION INC 功能描述:8 Mbit Uniform Sector, Serial Flash Memory |
| EN25P80-50VC | 制造商:EON 制造商全稱:Eon Silicon Solution Inc. 功能描述:8 Mbit Uniform Sector, Serial Flash Memory |
| EN25P80-50VCP | 制造商:EON 制造商全稱:Eon Silicon Solution Inc. 功能描述:8 Mbit Uniform Sector, Serial Flash Memory |
| EN25P80-50VI | 制造商:EON 制造商全稱:Eon Silicon Solution Inc. 功能描述:8 Mbit Uniform Sector, Serial Flash Memory |
| EN25P80-50VIP | 制造商:EON 制造商全稱:Eon Silicon Solution Inc. 功能描述:8 Mbit Uniform Sector, Serial Flash Memory |
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