S70GL01GN00 Datasheet, PDF (65/83 Pages) SPANSION – 3.0 Volt-only Page Mode Flash Memory featuring 110 nm MirrorBit™ Process Technology

Advance Information
START
Read DQ7–DQ0
Read DQ7–DQ0
Toggle Bit
No
= Toggle?
Yes
No
DQ5 = 1?
Yes
Read DQ7–DQ0
Twice
Toggle Bit
No
= Toggle?
Yes
Program/Erase
Operation Not
Complete, Write
Reset Command
Program/Erase
Operation Complete
Note:
The system should recheck the toggle bit even if
DQ5 = 1 because the toggle bit may stop toggling as
DQ5 changes to 1. See the subsections on DQ6 and
DQ2 for more information.
Figure 6. Toggle Bit Algorithm
DQ2: Toggle Bit II
The Toggle Bit II on DQ2, when used with DQ6, indicates whether a particular
sector is actively erasing (that is, the Embedded Erase algorithm is in progress),
or whether that sector is erase-suspended. Toggle Bit II is valid after the rising
edge of the final WE# pulse in the command sequence.
DQ2 toggles when the system reads at addresses within those sectors that were
selected for erasure. (The system may use either OE# or CE# (or CE2#) to con-
trol the read cycles.) But DQ2 cannot distinguish whether the sector is actively
June 1, 2005 S70GL01GN00_00_A1
S70GL01GN00 MirrorBit^TM Flash
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