W25X40BVSNIG Winbond Electronics, W25X40BVSNIG Datasheet - Page 35
W25X40BVSNIG
Manufacturer Part Number
W25X40BVSNIG
Description
IC SPI FLASH 4MBIT 8SOIC
Manufacturer
Winbond Electronics
Datasheet
1.W25X40BVSNIG.pdf
(51 pages)
Specifications of W25X40BVSNIG
Format - Memory
FLASH
Memory Type
FLASH
Memory Size
4M (512K x 8)
Speed
104MHz
Interface
SPI Serial
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
W25X40BVSNIG
Manufacturer:
WINBOND
Quantity:
30 000
Part Number:
W25X40BVSNIG
Manufacturer:
WINBOND/华邦
Quantity:
20 000
Company:
Part Number:
W25X40BVSNIGT
Manufacturer:
VISHAY
Quantity:
2 000
9.2.22
The Read Unique ID Number instruction accesses a factory-set read-only 64-bit number that is unique
to each W25X10BV/20BV/40BV 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 23.
DO
DO
DO
DO
*=MSB
*=MSB
Read Unique ID Number (4Bh)
24 25
24 25
26
26
27 28
27 28
Figure 23. Read Unique ID Number Instruction Sequence
29 30
29 30
31 32 33
31 32 33
34
34
- 35 -
35 36
35 36
37 38
37 38
W25X10BV/20BV/40BV
Publication Release Date: August 20, 2009
39
39
*
*
40
40
63 62 61 60 59
63 62 61 60 59
41
41
42 43 44 101 102 103
42 43 44 101 102 103
Preliminary -- Revision B
2
2
1
1
0
0