參數(shù)資料
型號: HY5DU12422BTP-X
廠商: Hynix Semiconductor Inc.
英文描述: 512Mb DDR SDRAM
中文描述: 產(chǎn)品512Mb DDR SDRAM
文件頁數(shù): 18/37頁
文件大?。?/td> 396K
代理商: HY5DU12422BTP-X
Rev. 0.1 / May 2004
18
HY5DU12422B(L)TP
HY5DU12822B(L)TP
HY5DU121622B(L)TP
7.
Issue 2 or more Auto Refresh commands.
8.
Issue a Mode Register Set command to initialize the mode register with bit A8 = Low
Power-Up Sequence
CODE
CODE
CODE
CODE
CODE
CODE
CODE
CODE
CODE
CODE
CODE
CODE
CODE
CODE
CODE
NOP
PRE
MRS
EMRS
PRE
NOP
MRS
AREF
ACT
RD
VDD
VDDQ
VTT
VREF
/CLK
CLK
CKE
CMD
DM
ADDR
A10
BA0, BA1
DQS
DQ'S
LVCMOS Low Level
tIS tIH
tVTD
T=200usec
tRP
tMRD
tRP
tRFC
tMRD
tXSRD*
READ
Non-Read
Command
Power UP
VDD and CK stable
Precharge All
EMRS Set
MRS Set
Reset DLL
(with A8=H)
Precharge All
2 or more
Auto Refresh
MRS Set
(with A8=L)
* 200 cycle(tXSRD) of CK are required (for DLL locking) before Read Command
tMRD
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