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參數(shù)資料
| 型號： | X24325VM |
| 英文描述： | Advanced 2-Wire Serial E 2 PROM with Block Lock TM Protection |
| 中文描述： | 先進(jìn)的2線串行e的2座門鎖TM保護(hù)胎膜早破 |
| 文件頁數(shù)： | 10/17頁 |
| 文件大?。?/td> | 79K |
| 代理商： | X24325VM |
X24325
10
Block Protect Bits
The Block Protect Bits BP0 and BP1 determine which
blocks of the memory are write-protected:
Programmable Hardware Write Protect
The Write Protect (WP) pin and the Write Protect
Enable (WPEN) bit in the Write Protect Register
control the programmable hardware write protect
feature. Hardware write protection is enabled when the
WP pin and the WPEN bit are both HIGH, and
disabled when either the WP pin is LOW or the WPEN
bit is LOW. When the chip is hardware write-protected,
nonvolatile writes are disabled to the Write Protect
Register, including the BP bits and the WPEN bit itself,
as well as to block-protected sections in the memory
array. Only the sections of the memory array that are
not block-protected can be written. Note that since the
WPEN bit is write-protected, it cannot be changed
back to a LOW state, and write protection is disabled
as long as the the WP pin is held HIGH. Table 2
defines the write protection status for each state of
WPEN and WP.
Table 1. Block Protect Bits
6552 FRM T02
BP1
0
0
1
BP0
0
1
0
Protected
Addresses
None
C00h–FFFh
800h–FFFh
Upper 1/4
Upper 1/2
Full Array (WPR
not included)
1
1
0000h–FFFh
Table 2. Write Protect Status Table
6552 FRM T03
WP
0
X
1
WPEN
X
0
1
Memory Array
(Not Block
Protected)
Writable
Writable
Writable
Memory Array
(Block Protected)
Protected
Protected
Protected
BP Bits
Writable
Writable
Protected
WPEN Bit
Writable
Writable
Protected
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| X24325V-2.7 | OSC 5V SMT 7X5 CMOS PROGRM |
| X24325PM-2.7 | Advanced 2-Wire Serial E 2 PROM with Block Lock TM Protection |
| X24640V20I-1.8 | 400KHz 2-Wire Serial E 2 PROM with Block Lock |
| X24640S8-1.8 | 16 Characters x 2 Lines, 5x7 Dot Matrix Character and Cursor |
| X24640S8-2.5 | 16 Characters x 2 Lines, 5x7 Dot Matrix Character and Cursor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X24325VM-2.7 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Advanced 2-Wire Serial E 2 PROM with Block Lock TM Protection |
| X243-883B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:X200 SERIES (CMOS) STANDARD SPECFITIONS |
| X243-SERIES | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC |
| X-24-428-SVBB-BK | 制造商:Brady Corporation 功能描述:Labels External Height:0.5" 制造商:Brady Corporation 功能描述:LABEL IDENTIFICATION 29X12.7 BLK/SILVER; Background Color:Silver; Color:Black on Silver; External Height:0.5"; External Width:1.13"; For Use With:IDXPERT Hand-Held Labeler; Label Material:Metalized Polyester; Label Size:28.7 x 12.7mm;RoHS Compliant: Yes |
| X2444P | 制造商:Intersil Corporation 功能描述: 制造商:XICOR 功能描述: 制造商:Intersil Corporation 功能描述:Non-Volatile RAM, 16 x 16, 8 Pin, Plastic, DIP |
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