參數(shù)資料
型號: HY5DU281622AT-K
英文描述: SDRAM|DDR|4X2MX16|CMOS|TSSOP|66PIN|PLASTIC
中文描述: 內(nèi)存|復員| 4X2MX16 |的CMOS | TSSOP封裝| 66PIN |塑料
文件頁數(shù): 18/37頁
文件大?。?/td> 336K
代理商: HY5DU281622AT-K
Rev. 0.3 / Dec. 01
18
HY5DU12422T
HY5DU12822T
HY5DU121622T
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
/CLK
CLK
VDD
DQS
DQ’s
MRS
AREF
PRE
NOP
MRS
EMRS
PRE
NOP
CODE
CODE
CODE
CODE
CODE
CODE
CODE
CODE
CODE
VDDQ
VREF
CKE
CMD
BA0,BA1
A10
ADDR
DM
tVTD
T=200usec
tMRD
200 cycles of CK*
tRP
tRFC
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 cycles of CK are required (for DLL locking) before any executable command can be applied.
VTT
tRP
tIS tIH
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