EDD51161DBH-5BTS-F ELPIDA [Elpida Memory], EDD51161DBH-5BTS-F Datasheet - Page 30
EDD51161DBH-5BTS-F
Manufacturer Part Number
EDD51161DBH-5BTS-F
Description
Manufacturer
ELPIDA [Elpida Memory]
Datasheet
1.EDD51161DBH-5BTS-F.pdf
(58 pages)
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Auto Precharge
Read with Auto Precharge
The precharge is automatically performed after completing a read operation. The precharge starts BL/2 (= tRPD)
clocks after READA command input. tRAS lock out mechanism for READA allows a read command with auto
precharge to be issued to a bank that has been activated (opened) but has not yet satisfied the tRAS (min)
specification. A column command to the other active bank can be issued the next cycle after the last data output.
Read with auto precharge command does not limit row commands execution for other bank.
Write with Auto Precharge
The precharge is automatically performed after completing a burst write operation. The precharge operation is
started Write latency (WL) + BL/2 + tWR (= tWPD) clocks after WRITA command issued.
Write with auto precharge command does not limit row commands execution for other bank.
Preliminary Data Sheet E1453E20 (Ver. 2.0)
A column command to the other banks can be issued the next cycle after the internal precharge command issued.
Note: Internal auto-precharge starts at the timing indicated by "
Command
Note: Internal auto-precharge starts at the timing indicated by "
Command
DQS
/CK
DM
DQ
DQS
CK
/CK
DQ
CK
ACT
ACT
tRCD (min)
NOP
tRCD (min)
WRITA
tRAS (min)
tRAS (min)
READA
Read with auto precharge
Burst Write (BL = 4)
in1
WL + BL/2 + tWR (= tWPD)
BL/2 (= tRPD)
in2
30
in3
".
".
tAC,tDQSCK
NOP
in4
NOP
out0
tRP (min)
EDD51161DBH-TS
out1 out2
tRP
out3
BL = 4
ACT
ACT
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