GD25LQ16CSFG datasheet(36/71 Pages) GIGADEVICE

36 / 71 page

1.8V Uniform Sector

Dual and Quad Serial Flash

GD25LQ16C

7.26 Program/Erase Suspend (PES) (75H)

The Program/Erase Suspend command

“75H”, allows the system to interrupt a page program or sector/block erase

operation and then read data from any other sector or block. The Write Status Register command (01H) and Erase/Program

Security Registers command (44H,42H) and Erase commands (20H, 52H, D8H, C7H, 60H) and Page Program command

(02H/32H) are not allowed during Program suspend. The Write Status Register command (01H) and Erase Security

Registers command (44H) and Erase commands (20H, 52H, D8H, C7H, 60H) are not allowed during Erase suspend.

Program/Erase Suspend is valid only during the page program or sector/block erase

operation. A maximum of time of “tsus”

(See AC Characteristics) is required to suspend the program/erase operation.

The Program/Erase Suspend command will be accepted by the device only if the SUS2/SUS1 bit in the Status Register

equal to 0 and WIP bit equal to 1 while a Page Program or a Sector or Block Erase operation is on-going. If the SUS2/SUS1

bit equal to 1 or WIP bit equal to 0, the Suspend command will be ignored by the device. The WIP bit will be cleared form 1

to 0 within “tsus” and the SUS2/SUS1 bit will be set from 0 to 1 immediately after Program/Erase Suspend. A power-off

during the suspend period will reset the device and release the suspend state. The command sequence is show in Figure31.

Figure31. Program/Erase Suspend Sequence Diagram

7.27 Program/Erase Resume (PER) (7AH)

The Program/Erase Resume command must be written to resume the program or sector/block erase operation after a

Program/Erase Suspend command. The Program/Erase Resume command will be accepted by the device only if the

SUS2/SUS1 bit equal to 1 and the WIP bit equal to 0. After issued the SUS2/SUS1 bit in the status register will be cleared

from 1 to 0 immediately, the WIP bit will be set from 0 to 1 within 200ns and the Sector or Block will complete the erase

operation or the page will complete the program operation. The Program/Erase Resume command will be ignored unless a

Program/Erase Suspend is active. The command sequence is show in Figure32.

Figure32. Program/Erase Resume Sequence Diagram

Command

7AH

CS#

SCLK

Resume Erase/Program

Command

75H

CS#

SCLK

High-Z

tSUS

Accept read command

GD25LQ16CSFG Datasheet(PDF) 36 Page - GigaDevice Semiconductor (Beijing) Inc.