hm5216165 Elpida Memory, Inc., hm5216165 Datasheet - Page 20

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

HM5216165 Series
Auto Precharge
Read with auto precharge: In this operation, since precharge is automatically performed after completing a
read operation, a precharge command need not be executed after each read operation. The command executed
for the same bank after the execution of this command must be the bank active (ACTV) command. In
addition, an interval defined by l
CAS latency
3
2
1
20
CL = 3 Command
CL = 1 Command
CL = 2 Command
Dout
Dout
Dout
CLK
Note: Internal auto-precharge starts at the timing indicated by "
READ
READ
READ
At CLK = 50 MHz ( l
out0
APR
Data Sheet E0167H10
is required before execution of the next command.
Precharge start cycle
2 cycle before the final data is output
1 cycle before the final data is output
same cycle as the final data is output
out0
out1
APR
changes depending on the operating frequency. )
out1
out0
out2
out2
out1
out3
l APR
out3
out2
ACTV
l APR
".
ACTV
out3
l APR
ACTV