参数资料
型号: W25Q40BWSNIG
厂商: Winbond Electronics
文件页数: 52/73页
文件大小: 0K
描述: IC FLASH SPI 4MBIT 8SOIC
标准包装: 100
系列: SpiFlash®
格式 - 存储器: 闪存
存储器类型: FLASH
存储容量: 4M (512K x 8)
速度: 80MHz
接口: SPI 串行
电源电压: 1.65 V ~ 1.95 V
工作温度: -40°C ~ 85°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOIC
包装: 管件
W25Q40BW
8.2.34
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 W25Q40BW 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 instruc tion 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.
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
Figure 32. Read Unique ID Number Instruction Sequence
- 52 -
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