S29GL064M11TFIR40 Spansion Inc., S29GL064M11TFIR40 Datasheet - Page 76
S29GL064M11TFIR40
Manufacturer Part Number
S29GL064M11TFIR40
Description
Flash Memory IC
Manufacturer
Spansion Inc.
Series
S29GLr
Datasheet
1.S29GL064M90TFIR40.pdf
(116 pages)
Specifications of S29GL064M11TFIR40
Memory Size
64Mbit
Package/case
48-TSOP
Supply Voltage Max
3V
Leaded Process Compatible
Yes
Peak Reflow Compatible (260 C)
Yes
Access Time, Tacc
11nS
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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DQ2: Toggle Bit II
74
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.
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 are selected for era-
sure. (The system may use either OE# or CE# to control the read cycles.) But DQ2 cannot
distinguish whether the sector is actively erasing or is erase-suspended. DQ6, by comparison, in-
dicates whether the device is actively erasing, or is in Erase Suspend, but cannot distinguish
which sectors are selected for erasure. Thus, both status bits are required for sector and mode
information. Refer to
No
Table 36
Figure 8. Toggle Bit Algorithm
S29GL-M MirrorBit
Complete, Write
Reset Command
Read DQ7–DQ0
Read DQ7–DQ0
Read DQ7–DQ0
Program/Erase
Operation Not
Toggle Bit
Toggle Bit
DQ5 = 1?
= Toggle?
= Toggle?
to compare outputs for DQ2 and DQ6.
START
Twice
Yes
Yes
Yes
D a t a
TM
Flash Family
Operation Complete
No
No
Program/Erase
S h e e t
S29GL-M_00_B8 February 7, 2007
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