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M13S2561616A-2S Datasheet(PDF) 43 Page - Elite Semiconductor Memory Technology Inc. |
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M13S2561616A-2S Datasheet(HTML) 43 Page - Elite Semiconductor Memory Technology Inc. |
43 / 49 page ESMT M13S2561616A (2S) Operation Temperature Condition -40°C~85°C Elite Semiconductor Memory Technology Inc. Publication Date : Jan. 2015 Revision : 1.0 43/49 Power up & Initialization Sequence (based on DDR400) VDDQ VREF A0 - A 9 A11 - A n P o w e r-u p : VD D a n d CL K s t a b l e BA 0 , BA 1 E x te nde d M ode Re g i s t e r Se t COMMAND DM DQS t MR D t MR D 2 0 0 cyc l e s o f C L K * * Load Mo d e R egi s t er Re s e t D L L (wi t h A 8 = H) L oad Mo de R egis t er ( w ith A 8=L) VDD A1 0 T = 2 00us VTT (system*) tVDT >=0 CLK CLK CKE NOP t CH t CL t CK t IS t IH PRE EMRS MRS PRE AR AR MRS ACT t IH t IS CODE t IH t IS LV C O M S L O W L EV EL CODE CODE RA t IH t IS CODE CODE CODE RA BA0=L, BA1=L BA t IH t IS t IH t IS BA0=L, BA1=L H i gh- Z DQ Hi g h - Z t RP t RF C t MR D ALL BANKS ALL BANKS t RF C BA0=H, BA1=L t IH t IS :D o n ’ t c a r e 10 12 2 B 1 6 R . B Notes: * = VTT is not applied directly to the device, however tVTD must be greater than or equal to zero to avoid device latch-up. ** = tMRD is required before any command can be applied, and 200 cycles of CLK are required before an executable command can be applied. The two Auto Refresh commands may be moved to follow the first MRS but precede the second PRECHARGE ALL command. |
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