GD25R256D datasheet(56/82 Pages) GIGADEVICE

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3.3V Uniform Sector

Dual and Quad Serial Flash

GD25R256D

4Quad Page Program

Yes

Required for array program during erase suspend.

Program/Erase Resume 7A

Yes

Required to resume from erase/program suspend.

Enable Reset

Yes

Reset allowed anytime.

Reset

Yes

Reset allowed anytime.

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

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 fro

m 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.

Figure 63 Program/Erase Suspend Sequence Diagram

7.32.

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.

Figure 64 Program/Erase Resume Sequence Diagram

Command

75H

CS#

SCLK

High-Z

tSUS

Accept read command

Command

7AH

CS#

SCLK

Resume Erase/Program

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