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IS25LE01G-RILA3 데이터시트(PDF) 162 Page - Integrated Silicon Solution, Inc

부품명 IS25LE01G-RILA3
상세설명  SERIAL FLASH MEMORY 133/104MHZ MULTI I/O SPI & QUAD I/O QPI DTR INTERFACE WITH ON-CHIP ECC
PDF  186 Pages
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제조업체  ISSI [Integrated Silicon Solution, Inc]
홈페이지  http://www.issi.com
Logo ISSI - Integrated Silicon Solution, Inc

IS25LE01G-RILA3 데이터시트(HTML) 162 Page - Integrated Silicon Solution, Inc

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IS25LE01G
IS25WE01G
Integrated Silicon Solution, Inc.- www.issi.com
162
Rev. A6
01/14/2025
8.61 PROGRAM PASSWORD OPERATION (PGPWD, E8h)
Before the Program Password (PGPWD) command can be accepted by the device, a Write Enable (WREN)
command must be issued and decoded by the device which sets the Write Enable Latch (WEL) to enable the
PGPWD operation. The password can only be programmed before the Password Mode is selected by programming
the Password Protection Mode bit to “0” in the ASP Register (ASP[2]). After the Password Protection Mode is
selected the PGPWD command is ignored.
The PGPWD command is entered by driving CE# low, followed by the instruction code and the password data
bytes, least significant byte first, most significant bit of each byte first. The password is 64bits in length.
CE# must be driven high after the 64th bit of data has been latched. If not, the PGPWD command is not executed.
As soon as CE# is driven high, the PGPWD operation is initiated. While the PGPWD operation is in progress, the
Status Register may be read to check the value of the Write
In Progress (WIP) bit. The WIP bit is “1” during the
PGPWD
operation, and is “0” when it is completed. When the PGPWD operation is completed, the Write Enable
Latch (WEL) is set to “0”.
Figure 8.134 Program Password Sequence In SPI Mode
Instruction = E8h
CE #
SCK
SI
SO
0
1
...
7
8
9
...
15
16
17
...
23
...
64
65
...
Mode 3
Mode 0
7
15
14
8
6
...
0
63
62
56
...
...
...
71
1
st byte Data In
2
nd byte Data In
...
8
th byte Data In
High Impedence
Figure 8.135 Program Password Sequence In QPI Mode
E8h
CE#
SCK
IO[3:0]
0
1
Mode 3
Mode 0
2
3
4
5
1
st byte
Data In
2
nd byte
Data In
...
8
th byte
Data In
...
16
17



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