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HY5DU573222FP-28 Datasheet(PDF) 16 Page - Hynix Semiconductor |
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HY5DU573222FP-28 Datasheet(HTML) 16 Page - Hynix Semiconductor |
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16 / 30 page  1HY5DU573222F(P) Rev. 1.1 / May. 2005 16 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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