s71gl128nb0 Meet Spansion Inc., s71gl128nb0 Datasheet - Page 73

• Manufacturer Part Number: s71gl128nb0
• Description: Stacked Multi-chip Product Mcp 512/256/128 Megabit 32/16/8 M X 16-bit Cmos 3.0 Volt-only Mirrorbittm Page-mode Flash Memory With 32 Megabit 2m X 16-bit Psram
• Manufacturer: Meet Spansion Inc.

June 14, 2004 S29GLxxxN_00_A4
DQ2: Toggle Bit II
ing diagrams. Figure 19 shows the differences between DQ2 and DQ6 in graphical
form. See also the subsection on 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.
A d v a n c e
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.
No
Figure 6. Toggle Bit Algorithm
S29GLxxxN MirrorBit
Read Byte Twice
DQ6 = Toggle?
DQ6 = Toggle?
Adrdess = VA
Address = VA
Address = VA
I n f o r m a t i o n
(DQ 0-DQ7)
(DQ0-DQ7)
(DQ0-DQ7)
Read Byte
Read Byte
DQ5 = 1?
START
FAIL
Yes
Yes
Yes
TM
Flash Family
No
No
PASS
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