参数资料
型号: W25Q32BWSNIP
厂商: WINBOND ELECTRONICS CORP
元件分类: PROM
英文描述: 4M X 8 SPI BUS SERIAL EEPROM, DSO8
封装: 0.150 INCH, GREEN, PLASTIC, SOIC-8
文件页数: 48/72页
文件大小: 2212K
代理商: W25Q32BWSNIP
W25Q32BW
- 52 -
10.2.34 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 W25Q32BW 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 32.
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 32. Read Unique ID Number Instruction Sequence
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