AS4C32M16D1 Datasheet, PDF (44/59 Pages) –

AS4C128M8D2
Figure 28. Write burst interrupt timing: (CL=3, AL=0, RL=3, WL=2, BL=8)
CK#
CK
CMD
NOP
Write A
NOP
Write B
NOP
NOP
NOP
NOP
NOP
NOP
DQS
DQS#
DQs
A0 A1 A2 A3 B0 B1 B2 B3 B4 B5 B6 B7
NOTE 1: Write burst interrupt function is only allowed on burst of 8. Burst interrupt of 4 is prohibited.
NOTE 2: Write burst of 8 can only be interrupted by another Write command. Write burst interruption by Read command or
Precharge command is prohibited.
NOTE 3: Write burst interrupt must occur exactly two clocks after previous Write command. Any other Write burst interrupt
timings are prohibited.
NOTE 4: Write burst interruption is allowed to any bank inside DRAM.
NOTE 5: Write burst with Auto Precharge enabled is not allowed to interrupt.
NOTE 6: Write burst interruption is allowed by another Write with Auto Precharge command.
NOTE 7: All command timings are referenced to burst length set in the mode register. They are not referenced to actual
burst. For example, minimum Write to Precharge timing is WL + BL/2 + tWR where tWR starts with the rising clock after the
uninterrupted burst end and not from the end of actual burst end.
Alliance Memory Inc. 551 Taylor Way, San Carlos, CA 94070
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Alliance Memory Inc. reserves the right to change products or specification without notice.
44
Rev. 1.0
June 2013