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IS25LEG-RLLA2:P-TY Datasheet(PDF) 150 Page - Integrated Silicon Solution, Inc

Part # IS25LEG-RLLA2:P-TY
Description  SERIAL FLASH MEMORY 166/133MHZ MULTI I/O SPI & QUAD I/O QPI DTR INTERFACE WITH ON-CHIP ECC
PDF  193 Pages
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Manufacturer  ISSI [Integrated Silicon Solution, Inc]
Direct Link  http://www.issi.com
Logo ISSI - Integrated Silicon Solution, Inc

IS25LEG-RLLA2:P-TY Datasheet(HTML) 150 Page - Integrated Silicon Solution, Inc

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IS25LE01GG
IS25WE01GG
Integrated Silicon Solution, Inc.- www.issi.com
150
Rev. A3
10/02/2025
8.51 READ DYB OPERATION (RDDYB, FAh or 4RDDYB, E0h)
FAh (EXTADD=0) is followed by a 3-byte address (A23-A0) or
• FAh (EXTADD=1) is followed by a 4-byte address (A31-A0) or
• E0h is followed by a 4-byte address (A31-A0)
The instruction is used to read Dynamic Protection Bit (DYB) status of the given sector/block. The instruction code
is entered first, followed by the 24-bit or 32-bit address selecting location zero within the desired sector/block as
above. Then the 8-bit DYB access register contents are shifted out. Each bit (SPI) or four bits (QPI) are shifted out
at the SCK frequency by the falling edge of the SCK signal. It is possible to read the same DYB access register
continuously by providing multiples of eight bits. The address of the DYB register does not increment so this is not
a means to read the entire DYB array. Each location must be read with a separate Read DYB instruction.
Note: Data must be either 00h (protected) or FFh (unprotected).
Figure 8.111 Read DYB Sequence In SPI Mode (FAh [EXTADD=0], 3-byte address)
Instruction = FAh
CE #
SCK
SI
SO
0
1
...
7
8
9
...
31
32
33
34
35
36
37
38
39
Mode 3
Mode 0
3-byte Address
tV
7
3
2
1
0
6
5
4



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