GD25Q41ASIGT datasheet(40/51 Pages) GIGADEVICE

40 / 51 page

Uniform Sector

Dual and Quad Serial Flash

GD25Q21B

Program command (02H) and Erase commands (20H, 52H, D8H, C7H, 60H ) are not allowed during suspend.

Erase/Program Suspend is valid only during the sector/block erase or page program operation. A maximum of time of

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

While the Erase/Program suspend cycle is in progress, the Read Status Register command may still be accessed

for checking the status of the BUSY bit. The BUSY bit is a 1 during the Erase/Program suspend cycle and becomes

a 0 when the cycle is finished and the device is ready to accept read command. A power-off during the suspend period

will reset the device and release the suspend state. The command sequence is show below.

Figure 37. Program/Erase Suspend Sequence Diagram

7.33.

Program/Erase Resume (PER) (7AH)

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

a Program/Erase Suspend command. After issued the BUSY bit in the status register will be set to 1 and the sector/block

erase or program operation will completed. The Program/Erase Resume command will be ignored unless a Program/Erase

Suspend is active. The command sequence is show below.

Figure 38. Program/Erase Resume Sequence Diagram

Command

7AH

CS#

SCLK

Resume Erase/Program

Command

75H

CS#

SCLK

High-Z

tSUS

Accept read command

GD25Q41ASIGT Datasheet(PDF) 40 Page - GigaDevice Semiconductor (Beijing) Inc.