IS25LE512M-RLLA3:P-TY datasheet(147/189 Pages) ISSI

Part #	IS25LE512M-RLLA3:P-TY

Description	SERIAL FLASH MEMORY 133/112MHZ MULTI I/O SPI & QUAD I/O QPI DTR INTERFACE WITH ON-CHIP ECC

PDF	189 Pages

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Manufacturer	ISSI [Integrated Silicon Solution, Inc]

Direct Link	http://www.issi.com

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IS25LE512M

IS25WE512M

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

147

Rev. A6

06/16/2025

8.49 EXIT 4-BYTE ADDRESS MODE OPERATION (EX4B, 29h)

In order to be backward compatible, the Exit 4-byte Address Mode instruction allows 24bit address (A23-A0) to be

used to access the memory array up to 128Mb. The Bank Address Register must be used to access the memory

array beyond 128Mb. To execute EX4B operation, the host drives CE# low, sends the instruction code and then

drives CE# high.

A Write Enable (WREN, 06h) command is not required prior to EX4B (29h) command.

Note: The EX4B instruction will reset

the Bit 7 (EXTADD) of the volatile Bank Address Register to “0” ”, but will not

change the non-volatile Bank Address Register.

Figure 8.108 Exit 4-byte Address Mode Sequence In SPI Mode

Instruction = 29h

CE#

SCK

Mode 3

Mode 0

High Impedance

Figure 8.109 Exit 4-byte Address Mode Sequence In QPI Mode

29h

CE#

SCK

IO[3:0]

Mode 3

Mode 0

IS25LE512M-RLLA3:P-TY Datasheet(PDF) 147 Page - Integrated Silicon Solution, Inc