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HM5225165B-75 View Datasheet(PDF) - Elpida Memory, Inc

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HM5225165B-75 Datasheet PDF : 63 Pages
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HM5225165B/HM5225805B/HM5225405B-75/A6/B6
Read command to Precharge command interval (same bank):
When the precharge command is executed for the same bank as the read command that preceded it, the
minimum interval between the two commands is one clock. However, since the output buffer then becomes
High-Z after the clocks defined by lHZP, there is a case of interruption to burst read data output will be
interrupted, if the precharge command is input during burst read. To read all data by burst read, the clocks
defined by lEP must be assured as an interval from the final data output to precharge command execution.
READ to PRECHARGE Command Interval (same bank): To output all data
CAS Latency = 2, Burst Length = 4
CLK
Command
READ
Dout
CL=2
CAS Latency = 3, Burst Length = 4
PRE/PALL
out A0
out A1
out A2
out A3
l EP = -1 cycle
CLK
Command
Dout
READ
CL=3
PRE/PALL
out A0
out A1
out A2
out A3
l EP = -2 cycle
Data Sheet E0082H10
34
 

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