2 Mbit SPI Serial Flash
SST25VF020B
CE#
MODE 3
SCK MODE 0
0 1 2345 6 7
SI
80
MSB
SO
HIGH IMPEDANCE
1417 DisableSO.0
FIGURE 9: Disable SO as Hardware RY/BY# during AAI Programming
Data Sheet
CE#
MODE 3 0 7 8 15 16 23 24 31 32 39 40 47
SCK MODE 0
SI
AD A
A A D0 D1
Load AAI command, Address, 2 bytes data
SO
0 7 8 15 16 23
AD D2 D3
0 7 8 15 16 23
AD Dn-1 Dn
Last 2
Data Bytes
Check for Flash Busy Status to load next valid1 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
07
0 7 8 15
WRDI
RDSR
WDRI to exit
AAI Mode
DOUT
Wait TBP or poll
Software Status register
to load any command
1417 AAI.HW.0
FIGURE 10: Auto Address Increment (AAI) Word-Program Sequence with
Hardware End-of-Write Detection
©2010 Silicon Storage Technology, Inc.
13
S71417-02-000
04/10