参数资料
型号: S29GL256N80TFIV10
厂商: Spansion Inc.
英文描述: MirrorBit Flash Family
中文描述: MirrorBit闪存系列
文件页数: 92/110页
文件大小: 2624K
代理商: S29GL256N80TFIV10
82
S29GLxxxN MirrorBitTM Flash Family
27631A4 May 13, 2004
Adva nce
Inform at i o n
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 have
been selected for erasure. (The system may use either OE# or CE# to control the
START
No
Yes
DQ5 = 1?
No
Yes
Toggle Bit
= Toggle?
No
Program/Erase
Operation Not
Complete, Write
Reset Command
Program/Erase
Operation Complete
Read DQ7–DQ0
Toggle Bit
= Toggle?
Read DQ7–DQ0
Twice
Read DQ7–DQ0
Not e :
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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