IS25LE128E-RGLA3:P-TY datasheet(154/197 Pages) ISSI

Part #	IS25LE128E-RGLA3:P-TY

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

PDF	197 Pages

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Manufacturer	ISSI [Integrated Silicon Solution, Inc]

Direct Link	http://www.issi.com

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154 / 197 page

IS25LE256E/128E

IS25WE256E/128E

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

154

Rev.A9

03/07/2023

8.50 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 instruc

tion 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 8.113 Exit 4-byte Address Mode Sequence In SPI Mode

Instruction = 29h

CE#

SCK

Mode 3

Mode 0

High Impedance

Figure 8.114 Exit 4-byte Address Mode Sequence In QPI Mode

29h

CE#

SCK

IO[3:0]

Mode 3

Mode 0

IS25LE128E-RGLA3:P-TY Datasheet(PDF) 154 Page - Integrated Silicon Solution, Inc