hm5216165 Elpida Memory, Inc., hm5216165 Datasheet - Page 28

• Manufacturer Part Number: hm5216165
• Description: 16 M Lvttl Interface Sdram 512-kword ? 16-bit ? 2-bank
• Manufacturer: Elpida Memory, Inc.

HM5216165 Series
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 cycle. However, since the output buffer then becomes High-Z after the cycles defined by l
possibility that burst read data output will be interrupted, if the precharge command is input during burst read.
To read all data by burst read, the cycles defined by l
output to precharge command execution.
READ to PRECHARGE Command Interval (same bank): To output all data
CAS Latency = 1, Burst Length = 4
CAS Latency = 2, Burst Length = 4
CAS Latency = 3, Burst Length = 4
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Command
Command
Command
CLK
CLK
CLK
Dout
Dout
Dout
READ
READ
READ
CL=1
CL=2
Data Sheet E0167H10
out A0
CL=3
out A0
out A1
out A2
out A1
out A0
EP
must be assured as an interval from the final data
PRE/PALL
PRE/PALL
PRE/PALL
l
EP
out A2
out A3
out A1
= 0 cycle
l
EP
= -1 cycle
l
EP
= -2 cycle
out A2
out A3
out A3
HZP
, there is a