GD25Q128C Datasheet, PDF (44/69 Pages) ELM Electronics – 128M-bit Serial Flash

GD25Q128CxIGx 3.3V Uniform Sector Dual and Quad Serial Flash
7.26. Program/Erase Suspend (PES) (75H)
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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/31H/11H) 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/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 from 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 Figure29.
Figure 29. Program/Erase Suspend Sequence Diagram
CS#
SCLK
SI
SO
01234567
Command
75H
High-Z
tSUS
Accept read command
Figure 29a. Program/Erase Suspend Sequence Diagram (QPI)
CS#
SCLK
IO₀
01
Command
75H
tSUS
IO₁
IO₂
IO₃
Accept Read
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Rev.1.2