EFST
F49L004UA / F49L004BA
Figure 20. Toggle Bit Algorithm
Start
Read Q7 ~ Q0
Read Q7 ~ Q0
(Note 1)
No
Toggle Bit = Q6
Toggle?
Yes
No
Q5 = 1?
Yes
(Note 1,2)
Read Q7~Q0 Twice
No
Toggle bit Q6
=
Toggle?
Yes
Program / Erase operation
Not complete, write
reset command
Program / Erase
operation complete
Note :
1. Read toggle bit twice to determine whether or not it is toggle.
2. Recheck toggle bit because it may stop toggling as Q5 change to "1".
Elite Flash Storage Technology Inc.
Publication Date : Sep. 2003
Revision: 1.0
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