hm5216805 Renesas Electronics Corporation., hm5216805 Datasheet - Page 25

• Manufacturer Part Number: hm5216805
• Description: 16 M Lvttl Interface Sdram 100 Mhz/83 Mhz 1-mword 8-bit 2-bank/2-mword 4-bit 2-bank - Hitachi Semiconductor
• Manufacturer: Renesas Electronics Corporation.

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
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
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. )
APR
out1
out2
out0
HM5216805 Series, HM5216405 Series
is required before execution of the next command.
out2
out1
out3
l APR
out3
out2
ACTV
l APR
".
ACTV
out3
l APR
ACTV
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