參數(shù)資料
型號(hào): HB52RD328DC
廠商: Hitachi,Ltd.
英文描述: 256 MB Unbuffered SDRAM S.O.DIMM(256 MB 未緩沖同步DRAM S.O.DIMM)
中文描述: 256 MB的無緩沖內(nèi)存的SODIMM(256 MB的未緩沖同步內(nèi)存的SODIMM)
文件頁數(shù): 46/68頁
文件大?。?/td> 885K
代理商: HB52RD328DC
HB52RD328DC-F
46
Read with auto precharge to Write command interval
Different bank:
When some banks are in the active state, the second write command (another bank) is
executed. However, DQMB must be set High so that the output buffer becomes High-Z before data input.
The internal auto-precharge of one bank starts at the next clock of the second command.
Read with Auto Precharge to Write Command Interval
(Different bank)
CK
Command
BA
Dout
Din
CL = 2
CL = 3
READ A
WRIT
in B0
in B1
in B2
in B3
Burst Length = 4
bank0
Read A
bank3
Write
Note: Internal auto-precharge starts at the timing indicated by " ".
DQMB
High-Z
2. Same bank:
The consecutive write command from read with auto precharge (the same bank) is illegal. It
is necessary to separate the two commands with a bank active command.
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