參數(shù)資料
型號： S71PL191HB0BFI100
廠商： SPANSION LLC
元件分類： 存儲器
英文描述： SPECIALTY MEMORY CIRCUIT, PBGA73
封裝： 9 X 13 MM, LEAD FREE, FBGA-73
文件頁數(shù)： 148/172頁
文件大?。?/td> 4662K
代理商： S71PL191HB0BFI100
May 7, 2004 S29PL127H_129H_00A1
S29PL127H/S29PL129H
61
Pre l i m i n a r y
Figure 8. Toggle Bit Algorithm
Reading Toggle Bits DQ6/DQ2
Refer to Figure 8 for the following discussion. Whenever the system initially be-
gins reading toggle bit status, it must read DQ7–DQ0 at least twice in a row to
determine whether a toggle bit is toggling. Typically, the system would note and
store the value of the toggle bit after the first read. After the second read, the
system would compare the new value of the toggle bit with the first. If the toggle
START
No
Yes
DQ5 = 1?
No
Yes
Toggle Bit
= Toggle?
No
Program/Erase
Operation Not
Complete, Write
Reset Command
Program/Erase
Operation Complete
Toggle Bit
= Toggle?
Read Byte Twice
(DQ7–DQ0)
Address = VA
Read Byte
(DQ7–DQ0)
Address =VA
Read Byte
(DQ7–DQ0)
Address =VA
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.
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