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AT25SF321 Datasheet(PDF) 19 Page - Dialog Semiconductor

Part # AT25SF321
Description  32-Mbit, 2.5V Minimum SPI Serial Flash Memory with Dual-I/O and Quad-IO Support
PDF  48 Pages
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Manufacturer  DIALOG [Dialog Semiconductor]
Direct Link  http://www.dialog-semiconductor.com/
Logo DIALOG - Dialog Semiconductor

AT25SF321 Datasheet(HTML) 19 Page - Dialog Semiconductor

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AT25SF321
DS-25SF321–047F–8/2017
internal address counter increments and crosses into the suspended area, the device will then start outputting undefined
data until the internal address counter crosses to an unsuspended area.
A program operation is not allowed to a block that has been erase suspended. If a program operation is attempted to an
erase suspended block, then the program operation will abort and the WEL bit in the Status Register will be reset back to
a logical "0" state. Likewise, an erase operation is not allowed to a block that included the page that has been program
suspended. If attempted, the erase operation will abort and the WEL bit in the Status Register will be reset to a logical "0"
state.
If an attempt is made to perform an operation that is not allowed during a program or erase suspend, such as a Write
Status Register operation, then the device will simply ignore the opcode and no operation will be performed. The state of
the WEL bit in the Status Register will not be affected.
Table 7-1.
Operations Allowed and Not Allowed During a Program/Erase Suspend Command
Command
During Program Suspend
During Erase Suspend
Read Commands
Read Array (03h, 0Bh, 3Bh, BBh, 6Bh, EBh)
Allowed (1)
Allowed(1)
Continuous Read Reset (FFh)
Allowed(1)
Allowed(1)
Program and Erase Commands
Block Erase (20h, 52h, D8h)
Not Allowed
Not Allowed
Chip Erase (C7h, 60h)
Not Allowed
Not Allowed
Byte/Page Program (02h)
Not Allowed
Allowed(1)
Program/Erase Suspend (75h)
Not Allowed
Not Allowed
Program/Erase Resume (7Ah)
Allowed
Allowed
Protection Commands
Write Enable (06h)
Allowed
Allowed
Write Disable (04h)
Allowed
Allowed
Security Commands
Erase Security Register Page (44h)
Not Allowed
Not Allowed
Program Security Register Page (42h)
Not Allowed
Not Allowed
Read Security Register Page (48h)
Allowed
Allowed
Status Register Commands
Read Status Register (05h, 35h)
Allowed
Allowed
Write Status Register (01h)
Not Allowed
Not Allowed
Volatile Write Enable Status Register (50h)
Not Allowed
Not Allowed
Miscellaneous Commands
Read Manufacturer and Device ID (9Fh)
Allowed
Allowed
Read ID (90h)
Allowed
Allowed
Deep Power-Down (B9h)
Not Allowed
Not Allowed
Resume from Deep Power-Down (ABh)
Allowed (2)
Allowed(2)
1.
Allowed for all 64K-byte blocks other than the one currently suspended.
2.
Allowed for reading Device ID.



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