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CLK
CMD
PRE
MRS
ACT
tRP
tRSC(min)
MRS can be issued only when both banks are idle.
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Precharge can be asserted after tRAS (min). The selected bank will enter the idle state after t RP.. The earliest assertion of the precharge
command without losing any burst data is show below.
+QRUPDO#ZULWH>#%/# #7,#
CLK
CMD
WE
PRE
DQ
D
D
D
D
3
0
1
2
+QRUPDO#UHDG>#%/# #7,#
CLK
CMD
DQ(CL1)
DQ(CL2)
DQ(CL3)
Read data
PRE
Q0
Q1
Q2
Q
3
Q
Q
Q
Q
3
0
1
2
Q
Q
Q
Q
3
0
1
2
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ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
