8 Mbit 1.8V SPI Serial Flash
A Microchip Technology Company
CE#
SST25WF080
Not Recommended for New Designs
MODE 3
0 1 2 3 4 5 6 7
SCK
SI
SO
MODE 0
70
MSB
HIGH IMPEDANCE
1203 F09.0
Figure 10: Enable SO as Hardware RY/BY# during AAI Programming
CE#
MODE 3
0 1 2 3 4 5 6 7
SCK
SI
SO
MODE 0
80
MSB
HIGH IMPEDANCE
1203 F10.0
Figure 11: Disable SO as Hardware RY/BY# during AAI Programming
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
WDRI to exit
SO
Data Bytes
Check for Flash Busy Status to load next valid 1 command
AAI Mode
D OUT
Wait T BP or poll
Software Status register
to load any command
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
1203 F11.0
Figure 12: Auto Address Increment (AAI) Word Program Sequence
with Hardware End-of-Write Detection
?2012 Silicon Storage Technology, Inc.
16
DS25024B
03/12
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