32 Mbit SPI Serial Flash
A Microchip Technology Company
CE#
SST25VF032B
Data Sheet
MODE 3
0
7
0
7
0
7 8
15 16 23 24
31 32
39 40 47
0
7 8
15 16 23
SCK MODE 0
SI
EBSY
WREN
AD
A
A
A
D0
D1
AD
D2
D3
Load AAI command, Address, 2 bytes data
SO
Check for Flash Busy Status to load next valid 1 command
CE# cont.
0
7 8
15 16 23
0
7
0
7
0
7 8
15
SCK cont.
SI cont.
AD
D n-1
Dn
WRDI
DBSY
RDSR
SO cont.
Last 2
Data Bytes
WRDI followed by DBSY
to exit AAI Mode
D OUT
Check for Flash Busy Status to load next valid 1 command
1327 AAI.HW.3
Note: 1. Valid commands during AAI programming: AAI command or WRDI command
2. User must configure the SO pin to output Flash Busy status during AAI programming
Figure 10: Auto Address Increment (AAI) Word-Program Sequence with Hardware End-of-
Write Detection
Wait T BP or poll Software Status
register to load next valid 1 command
CE#
MODE 3
0
7 8
15 16 23 24
31 32 39 40 47
0
7 8
15 16 23
0
7 8
15 16 23
0
7
0
7 8
15
SCK MODE 0
SI
AD
A
A
A
D0
D1
AD
D2
D3
AD
D n-1
D n
WRDI
RDSR
Load AAI command, Address, 2 bytes data
Last 2
WRDI to exit
Data Bytes
SO
Note: 1. Valid commands during AAI programming: AAI command or WRDI command
Figure 11: Auto Address Increment (AAI) Word-Program Sequence with
Software End-of-Write Detection
AAI Mode
D OUT
1327 AAI.SW.2
?2011 Silicon Storage Technology, Inc.
14
DS25071A
12/11
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