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AT25SF321 Datasheet(PDF) 27 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) 27 Page - Dialog Semiconductor

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AT25SF321
DS-25SF321–047F–8/2017
Notes:
1. Only bits 7 through 2 of the Status Register can be modified when using the Write Status Register command.
2. R/W = Readable and writable
R = Readable only
Figure 10-1. Read Status Register Byte 1
Table 10-1.
Status Register Format - Byte 1
Bit(1)
Name
Type(2)
Description
7
SRP0
Status Register Protection bit-0
R/W
See Table 10-3 on Status Register Protection
6
SEC
Block Protection
R/W
See Table 8-1 and 8-2 on Non-Volatile Protection
5
TB
Top or Bottom Protection
R/W
See Table 8-1 and 8-2 on Non-Volatile Protection
4
BP2
Block Protection bit-2
R/W
See Table 8-1 and 8-2 on Non-Volatile Protection
3
BP1
Block Protection bit-1
R/W
See Table 8-1 and 8-2 on Non-Volatile Protection
2
BP0
Block Protection bit-0
R/W
See Table 8-1 and 8-2 on Non-Volatile Protection
1
WEL
Write Enable Latch Status
R
0
Device is not Write Enabled (default)
1
Device is Write Enabled
0
RDY/BSY
Ready/Busy Status
R
0
Device is ready
1
Device is busy with an internal operation
SCK
CS
SI
SO
MSB
23
1
0
00000101
67
5
41011
9
8122122
1720
19
18
1516
131423242829
27
26
2530
MSB
MSB
DDDDDD
DD
D
D
MSB
DDDDDD
D
D
D DD
D D D
BYTE 1
HI
GH-
I
MPEDANCE
BYTE 1
BYTE 1
Table 10-2. Status Register Format – Byte 2
Bit(1)
Name
Type(2)
Description
7
SUS
Suspend Status
R
0
Device is not suspended (default)
1
Device is suspended from erase
6
CMP
Complement Block Protection
R/W
0
See table on Block Protection
5
LB3
Lock Security Register 3
R/W
0
Security Register page-3 is not locked (default)
1
Security Register page-3 cannot be erased/programmed
4
LB2
Lock Security Register 2
R/W
0
Security Register page-2 is not locked (default)
1
Security Register page-2 cannot be erased/programmed
3
LB1
Lock Security Register 1
R/W
0
Security Register page-1 is not locked (default)
1
Security Register page-1 cannot be erased/programmed
2
RES
Reserved for future use
R
0
Reserved for future use



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