is42s32800g-7bli Integrated Silicon Solution, Inc., is42s32800g-7bli Datasheet - Page 27

• Manufacturer Part Number: is42s32800g-7bli
• Description: 8m X 32 256mb Synchronous Dram
• Manufacturer: Integrated Silicon Solution, Inc.

IS42S32800G, IS45S32800G
diagram for each possible CAS latency; data element n +
3 is either the last of a burst of four or the last desired of
a longer burst. Following the PRECHARGE command, a
subsequent command to the same bank cannot be issued
until t
hidden during the access of the last data element(s).
In the case of a fixed-length burst being executed to
completion, a PRECHARGE command issued at the
optimum time (as described above) provides the same
operation that would result from the same fixed-length
burst with auto precharge. The disadvantage of the PRE-
CHARGE command is that it requires that the command
and address buses be available at the appropriate time to
issue the command; the advantage of the PRECHARGE
command is that it can be used to truncate fixed-length
or full-page bursts.
Full-page READ bursts can be truncated with the BURST
TERMINATE command, and fixed-length READ bursts
may be truncated with a BURST TERMINATE command,
provided that auto precharge was not activated.The BURST
TERMINATE command should be issued x cycles before
the clock edge at which the last desired data element is
valid, where x equals the CAS latency minus one. This is
shown in the READ Burst Termination diagram for each
possible CAS latency; data element n + 3 is the last desired
data element of a longer burst.
Integrated Silicon Solution, Inc. - www.issi.com
Rev. 00A
07/12/2010
rp
is met. Note that part of the row precharge time is
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