IS25LEG-RGLA2:P-TY datasheet(166/193 Pages) ISSI

부품명	IS25LEG-RGLA2:P-TY

상세설명	SERIAL FLASH MEMORY 166/133MHZ MULTI I/O SPI & QUAD I/O QPI DTR INTERFACE WITH ON-CHIP ECC

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IS25LE01GG

IS25WE01GG

Integrated Silicon Solution, Inc.- www.issi.com

166

Rev. A3

10/02/2025

8.64 READ PASSWORD OPERATION (RDPWD, E7h)

The correct password value may be read only after it is programmed and before the Password Mode has been

selected by programming the Password Protection Mode bit to “0” in the ASP Register (ASP[2]). After the Password

Protection Mode is selected the RDPWD command is ignored.

The RDPWD command is shifted in. Then the 64-bit Password is shifted out, least significant byte first, most

significant bit of each byte first. Each bit is shifted out at the SCK frequency by the falling edge of the SCK signal.

It is possible to read the Password continuously by providing multiples of 64bits.

Figure 8.143 Read password Sequence In SPI Mode

Instruction = E7h

CE #

SCK

...

Mode 3

Mode 0

...

1st byte Data Out

2nd byte Data Out

...

8th byte Data Out

Figure 8.144 Read Password Sequence In QPI Mode

E7h

CE#

SCK

IO[3:0]

Mode 3

Mode 0

...

1st byte

Data In

2nd byte

Data In

...

8th byte

Data In

IS25LEG-RGLA2:P-TY 데이터시트(PDF) 166 Page - Integrated Silicon Solution, Inc