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Read byte (DQ0–DQ7)
Read byte (DQ0–DQ7)
Address = don’t care
†
Address = VA
DQ7
=
DQ6
YES
NO
=
DONE
DONE
data
toggle
?
?
NO
YES
DQ5
=
DQ5
=
NO
NO
1
1
?
?
YES
YES
Read byte (DQ0–DQ7)
Address = VA
Read byte (DQ0–DQ7)
Address = don’t care
DQ7
data‡
?
DQ6
†
YES
NO
=
=
DONE
DONE
†
toggle
?
†
NO
FAIL
YES
FAIL
†
‡
VA = Byte address for programming. VA = any of the sector
addresses within the sector being erased during Sector Erase. VA
= valid address equals any non-protected sector group address
during Chip Erase.
†DQ6 rechecked even if DQ5 = 1 because DQ6 may stop toggling
when DQ5 changes to 1.
DQ7 rechecked even if DQ5 = 1 because DQ5 and DQ7 may not
change simultaneously.
43
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ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
