參數(shù)資料
型號(hào)： W25Q64BVZEIP
廠商： WINBOND ELECTRONICS CORP
元件分類(lèi)： PROM
英文描述： 8M X 8 SPI BUS SERIAL EEPROM, PDSO8
封裝： 8 X 6 MM, GREEN, WSON-8
文件頁(yè)數(shù)： 40/61頁(yè)
文件大?。?/td> 1726K
代理商： W25Q64BVZEIP
W25Q64BV
Publication Release Date: July 08, 2010
- 45 -
Revision E
11.2.27 Read Unique ID Number (4Bh)(1)
The Read Unique ID Number instruction accesses a factory-set read-only 64-bit number that is unique to
each W25Q64BV 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 28.
24 25
26
27
28
29 30
31 32
33
34
35 36
37 38
39
40
41
42
43 44 101 102 103
DO
63 62 61 60 59
2
1
0
*
*=MSB
DO
24 25
26
27
28
29 30
31 32
33
34
35 36
37 38
39
40
41
42
43 44 101 102 103
DO
63 62 61 60 59
2
1
0
*
*=MSB
DO
Figure 28. Read Unique ID Number Instruction Sequence
Note:
1. For W25Q64BV, this feature is available upon special request. Please contact Winbond for details.
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