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| S29NS-N Datasheet, PDF (60/86 Pages) SPANSION – Simultaneous Read/Write, Multiplexed, Burst Mode Flash Memory | |||
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Data Sheet (Advance Information)
Figure 12.2 Toggle Bit Algorithm
START
Read Byte
DQ7-DQ0
Address = VA
Read Byte
DQ7-DQ0
Address = VA
DQ6 = Toggle?
No
Yes
No
DQ5 = 1?
Yes
Read Byte Twice
DQ7-DQ0
Adrdess = VA
No
DQ6 = Toggle?
Yes
FAIL
PASS
Note
The system should recheck the toggle bit even if DQ5 = â1â because the toggle bit may stop toggling as DQ5 changes to â1.â See the
subsections on DQ6 and DQ2 for more information.
58
S29NS-N MirrorBit⢠Flash Family
S29NS-N_00_A12 June 13, 2006
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