AM29LV017D-120ED AMD [Advanced Micro Devices], AM29LV017D-120ED Datasheet - Page 26
AM29LV017D-120ED
Manufacturer Part Number
AM29LV017D-120ED
Description
16 Megabit (2 M x 8-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory
Manufacturer
AMD [Advanced Micro Devices]
Datasheet
1.AM29LV017D-120ED.pdf
(48 pages)
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must write the reset command to return to reading
array data.
The remaining scenario is that the system initially de-
termines that the toggle bit is toggling and DQ5 has not
gone high. The system may continue to monitor the
toggle bit and DQ5 through successive read cycles, de-
termining the status as described in the previous para-
graph. Alternatively, it may choose to perform other
system tasks. In this case, the system must start at the
beginning of the algorithm when it returns to determine
the status of the operation (top of Figure 6).
Table 9 shows the outputs for Toggle Bit I on DQ6. Fig-
ure 6 shows the toggle bit algorithm. Figure 18 in the
“AC Characteristics” section shows the toggle bit timing
diagrams. Figure 19 shows the differences between
DQ2 and DQ6 in graphical form. See also the subsec-
tion on DQ2: Toggle Bit II.
28
Am29LV017D
Notes:
1. Read toggle bit twice to determine whether or not it is
2. Recheck toggle bit because it may stop toggling as DQ5
toggling. See text.
changes to “1”. See text.
No
Figure 6. Toggle Bit Algorithm
Complete, Write
Reset Command
Read DQ7–DQ0
Read DQ7–DQ0
Read DQ7–DQ0
Program/Erase
Operation Not
Toggle Bit
Toggle Bit
= Toggle?
DQ5 = 1?
= Toggle?
START
Twice
Yes
Yes
Yes
(Notes
1, 2)
(Note 1)
Operation Complete
No
No
Program/Erase
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