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EM6A9160TS-3.3G Datasheet(PDF) 6 Page - Etron Technology, Inc. |
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EM6A9160TS-3.3G Datasheet(HTML) 6 Page - Etron Technology, Inc. |
6 / 29 page EtronTech 8Mx16 DDR SDRAM EM6A9160 6 Rev. 1.4 May 2006 Operation Mode Fully synchronous operations are performed to latch the commands at the positive edges of CK. Table 2 shows the truth table for the operation commands. Table 2. Truth Table (Note (1), (2) ) Command State CKEn-1 CKEn UDM UDM BS0,1 A10 A0-9,11 /CS /RAS /CAS /WE BankActivate Idle(3) H X X X V Row address L L H H BankPrecharge Any H X X X V L X L L H L PrechargeAll Any H X X X X H X L L H L Write Active(3) H X X X V L L H L L Write and AutoPrecharge Active(3) H X X X V H Column address (A0 ~ A8) L H L L Read Active(3) H X X X V L L H L H Read and Autoprecharge Active(3) H X X X V H Column address (A0 ~ A8) L H L H Mode Register Set Idle H X X X OP code L L L L Extended MRS Idle H X X X OP code L L L L No-Operation Any H X X X X X X L H H H Burst Stop Active(4) H X X X X X X L H H L Device Deselect Any H X X X X X X H X X X AutoRefresh Idle H H X X X X X L L L H SelfRefresh Entry Idle H L X X X X X L L L H SelfRefresh Exit Idle L H X X X X X H X X X (SelfRefresh) L H H H Idle H L X X X X X H X X X Precharge Power Down Mode Entry L H H H Any L H X X X X X H X X X Precharge Power Down Mode Exit (PowerDown) L H H H Active H L X X X X X H X X X Active Power Down Mode Entry L V V V Any L H X X X X X H X X X Active Power Down Mode Exit (PowerDown) L H H H Data Input Mask Disable Active H X L L X X X X X X X Data Input Mask Enable(5) Active H X H H X X X X X X X Note: 1. V=Valid data, X=Don't Care, L=Low level, H=High level 2. CKEn signal is input level when commands are provided. CKEn-1 signal is input level one clock cycle before the commands are provided. 3. These are states of bank designated by BS signal. 4. Device state is 1, 2, 4, 8, and full page burst operation. 5. LDM and UDM can be enable respectively. |
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