參數(shù)資料
型號: W25Q16DWSFIG
廠商: WINBOND ELECTRONICS CORP
元件分類: PROM
英文描述: 16M X 1 SPI BUS SERIAL EEPROM, PDSO16
封裝: 0.300 INCH, GREEN, PLASTIC, SOIC-16
文件頁數(shù): 55/83頁
文件大?。?/td> 1268K
代理商: W25Q16DWSFIG
W25Q16DW
Publication Release Date: April 01, 2011
- 59 -
Preliminary - Revision A
10.2.33 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 W25Q16DW 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.
/CS
CLK
DI
(IO
0)
DO
(IO
1)
Mode 0
Mode 3
0
1
2
3
4
5
6
7
Instruction (4Bh)
High Impedance
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
/CS
CLK
DI
(IO )
24
0
DO
(IO
1)
25
26
27
28
29
30
31
32
33
34
36
37
38
35
23
Mode 0
Mode 3
Dummy Byte 1
Dummy Byte 2
39
40
41
42
Dummy Byte 3
Dummy Byte 4
*
63
62
61
2
10
0
10
1
10
2
1
0
High Impedance
64-bit Unique Serial Number
= MSB
*
Figure 32. Read Unique ID Number Instruction (SPI Mode only)
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