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IS43LR32200B Datasheet(PDF) 10 Page - Integrated Silicon Solution, Inc |
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IS43LR32200B Datasheet(HTML) 10 Page - Integrated Silicon Solution, Inc |
10 / 42 page 10 Rev. A | Feb. 2013 www.issi.com - dram@issi.com IS43/46LR32200B Notes: 1. PCG = PRECHARGE command, MRS = LOAD MODE REGISTER command, AREF = AUTOREFRESH command, ACT = ACTIVE command, RA = Row address, BA = Bank address. 2. NOP or DESELECT commands are required for at least 200μs. 3. Other valid commands are possible. 4. NOPs or DESELECTs are required during this time. Figure6 : Power up sequence ACT BA BA0=L, BA1=H BA0=L, BA1=L All Banks MRS MRS AREF AREF PCG NOP NOP2 NOP3 CLK /CLK CKE T0 Command 1 T1 Ta0 tCL DM A0~A9 Tb0 Tc0 Td0 Te0 Tf0 tCK LVCMOS HIGH LEVEL A10 BA0, BA1 DQS, DQ High-Z T = 200 µs tIS RA CODE CODE tIS tIH RA CODE CODE tIS tIH tIS tIH tRP4 tRFC4 tRFC4 tMRD4 tMRD4 tIH VDDQ VDD tIS tIH Load Standard Mode Register Load Extended Mode Register Power-up: VDD and CLK stable Don’ t care |
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