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EDS1232ECBH-9ATT Datasheet(PDF) 32 Page - Elpida Memory |
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EDS1232ECBH-9ATT Datasheet(HTML) 32 Page - Elpida Memory |
32 / 50 page EDS1232ECBH-9ATT Preliminary Data Sheet E0878E10 (Ver. 1.0) 32 Read command to Write command interval 1. Same bank, same ROW address: When the write command is executed at the same ROW address of the same bank as the preceding read command, the write command can be performed after an interval of no less than 1 clock. However, DQM must be set High so that the output buffer becomes High-Z before data input. CLK Command DQ (output) in B2 in B3 READ WRIT in B0 in B1 High-Z DQ (input) CL=2 CL=3 DQM BL = 4 Burst write READ to WRITE Command Interval (1) CLK Command DQ READ WRIT CL=2 CL=3 DQM 2 clock out out out out out in in in in in in in in READ to WRITE Command Interval (2) 2. Same bank, different ROW address: When the ROW address changes, consecutive write commands cannot be executed; it is necessary to separate the two commands with a precharge command and a bank active command. 3. Different bank: When the bank changes, the write command can be performed after an interval of no less than 1 cycle, provided that the other bank is in the bank active state. However, DQM must be set High so that the output buffer becomes High-Z before data input. |
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