IS25LP032 datasheet(48/90 Pages) ISSI

48 / 90 page

IS25LP032/064/128

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

Rev. D

10/03/2014

8.20 PROGRAM/ERASE SUSPEND & RESUME

The device allows the interruption of Sector-Erase, Block-Erase or Page-Program operations to conduct other

operations. B0h command for suspend and 30h for resume will be used. (SPI/QPI all acceptable) Function

Suspend to read ready timing: 100µs.

Resume to another suspend timing: 400µs (recommendation).

PROGRAM/ERASE SUSPEND DURING SECTOR-ERASE OR BLOCK-Erase (PERSUS 75h/B0h)

After erase suspend, WEL bit will be disabled, therefore only read related, resume and reset commands will be

accepted (03h, 0Bh, BBh, 3Bh, EBh, 0Dh, BDh, EDh, 05h, 48h, 7Ah/30h, ABh, 9Fh, 90h, AFh, 4Bh, 5Ah, 00h,

66h and 99h, 68h).

To execute a Program/Erase Suspend operation, the host drives CE# low, sends the Program/Erase Suspend

command cycle (B0H), then drives CE# high. The Function register indicates that the erase has been

suspended by changing the ESUS bit from ‘0’ to ‘1,’ but the device will not accept another command until it is

ready. To determine when the device will accept a new command, poll the WIP bit in the Status register or wait

the specified time tSUS. When ESUS bit is issued, the Write Enable Latch (WEL) bit will be reset.

PROGRAM/ERASE SUSPEND DURING PAGE PROGRAMMING (PERSUS 75h/B0h)

Program suspend allows the interruption of all program operations.

After a program suspend command, WEL bit will be disabled, only read related, resume and reset command

can be accepted (03h, 0Bh, BBh, 3Bh, EBh, 0Dh, BDh, EDh, 05h, 48h, 7Ah/30h, ABh, 9Fh, 90h, AFh, 4Bh, 5Ah,

00h, 66h and 99h, 68h).

To execute a Program/Erase Suspend operation, the host drives CE# low, sends the Program/Erase Suspend

command cycle (B0H), then drives CE# high. The Function register indicates that the programming has been

suspended by changing the PSUS bit from ‘0’ to ‘1,’ but the device will not accept another command until it is

ready. To determine when the device will accept a new command, poll the WIP bit in the Status register or wait

the specified time tSUS.

PROGRAM/ERASE RESUME (PERRSM 7A/30h)

Program/Erase Resume restarts a Program/Erase command that was suspended, and changes the suspend

status bit in the (ESUS or PSUS bits) back to ‘0’. To execute a Program/Erase Resume operation, the host

drives CE# low, sends the Program/Erase Resume command cycle (30H), then drives CE# high. A cycle is two

nibbles long, most significant nibble first. To determine if the internal, self-timed Write operation completed, poll

the WIP bit in the Status register, or wait the specified time tSE, tBE or tPP for Sector- Erase, Block-Erase, or

Page-Programming, respectively. The total write time before suspend and after resume will not exceed the

uninterrupted write times tSE, tBE or tPP.

IS25LP032 Datasheet(PDF) 48 Page - Integrated Silicon Solution, Inc