參數(shù)資料
型號: W25X40BLSNIG
廠商: WINBOND ELECTRONICS CORP
元件分類: PROM
英文描述: 4M X 1 FLASH 2.7V PROM, PDSO8
封裝: 0.150 INCH, GREEN, PLASTIC, SOIC-8
文件頁數(shù): 31/53頁
文件大?。?/td> 2041K
代理商: W25X40BLSNIG
W25X10BL/20BL/40BL
Publication Release Date: October 14, 2009
- 37 -
Preliminary -- Revision A
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DO
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*=MSB
DO
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DO
9.2.23
Read Unique ID Number (4Bh)
The Read Unique ID Number instruction accesses a factory-set read-only 64-bit number that is unique
to each W25X10BL/20BL/40BL device. The ID number can be used in conjunction with user software
methods to help prevent copying or cloning of a system. The Read Unique ID instruction is initiated by
driving the /CS pin low and shifting the instruction code “4Bh” followed by a four bytes of dummy
clocks. After which, the 64-bit ID is shifted out on the falling edge of CLK as shown in figure 24.
Figure 24. Read Unique ID Number Instruction Sequence
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