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EDD2508AKTA-5 Datasheet(PDF) 32 Page - Elpida Memory |
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EDD2508AKTA-5 Datasheet(HTML) 32 Page - Elpida Memory |
32 / 48 page EDD2508AKTA-5 Preliminary Data Sheet E0349E60 (Ver. 6.0) 32 A Write command to the consecutive Read command interval: To complete the burst operation Destination row of the consecutive read command Bank address Row address State Operation 1. Same Same ACTIVE To complete the burst operation, the consecutive read command should be performed tWRD (= BL/ 2 + 2) after the write command. 2. Same Different — Precharge the bank tWPD after the preceding write command. tRP after the precharge command, issue the ACT command. tRCD after the ACT command, the consecutive read command can be issued. See ‘A read command to the consecutive precharge interval’ section. 3. Different Any ACTIVE To complete a burst operation, the consecutive read command should be performed tWRD (= BL/ 2 + 2) after the write command. IDLE Precharge the bank independently of the preceding write operation. tRP after the precharge command, issue the ACT command. tRCD after the ACT command, the consecutive read command can be issued. in0 in1 in2 in3 out2 out0 out1 CK /CK DM DQ Command t1 t0 t2 t3 t4 t5 t6 t7 t8 ; ; ;; ;; BL = 4 CL = 3 tWRD (min) tWTR* DQS INPUT OUTPUT BL/2 + 2 cycle WRIT NOP NOP READ Note: tWTR is referenced from the first positive CK edge after the last desired data in pair tWTR. WRITE to READ Command Interval |
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