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GD25B127D Datasheet(Scheda tecnica) 36 Page - GigaDevice Semiconductor (Beijing) Inc.

Numero della parte GD25B127D
Dettagli  3.3V Uniform Sector Dual and Quad Serial Flash
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Produttore  GIGADEVICE [GigaDevice Semiconductor (Beijing) Inc.]
Homepage  http://www.gigadevice.com/
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3.3V Uniform Sector
Dual and Quad Serial Flash
GD25B127D
36
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/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 suspend. The Write Status Register command
(01H/31H/11H) 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 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.
Figure29. 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 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 Figure30.
Figure30. Program/Erase Resume Sequence Diagram
Command
0
1
2
3
4
5
6
7
75H
CS#
SCLK
SI
SO
High-Z
tSUS
Accept read command
Command
0
1
2
3
4
5
6
7
7AH
CS#
SCLK
SI
SO
Resume Erase/Program




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