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HDD64M72D18W-13B Datasheet(PDF) 10 Page - Hanbit Electronics Co.,Ltd |
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HDD64M72D18W-13B Datasheet(HTML) 10 Page - Hanbit Electronics Co.,Ltd |
10 / 12 page HANBit HDD64M72D18W URL : www.hbe.co.kr 10 HANBit Electronics Co.,Ltd . REV 1.0 (August.2002) SIMPLIFIED TRUTH TABLE COMMAND CK E n-1 CK E n /CS /R A S /C A S /WE DM BA 0,1 A10/ AP A11,A12 A9~A0 NOTE Register Extended MRS H X L L L L X OP code 1,2 Register Mode register set H X L L L L X OP code 1,2 Auto refresh H 3 Entry H L L L L H X X 3 L H H H 3 Refresh Self refresh Exit L H H X X X X X 3 Bank active & row addr. H X L L H H X V Row address Auto precharge disable L 4 Read & column address Auto precharge eable H X L H L H X V H Column Address (A0 ~A9) 4 Auto precharge disable H L 4 Write & column address Auto precharge enable H X L H L L X V H Column Address (A0 ~ A9) 4,6 Burst Stop H X L H H L X X 7 Bank selection V L Precharge All banks H X L L H L X X H X 5 H X X X Entry H L L V V V X Clock suspend or active power down Exit L H X X X X X X H X X X Entry H L L H H H X H X X X Precharge power down mode Exit L H L V V V X X DM H X V X 8 H X X X No operation command H X L H H H X X (V=Valid, X=Don't care, H=Logic high, L=Logic low) Notes : 1. OP Code : Operand code A0 ~ A12 & BA0 ~ BA1 : Program keys. (@ MRS) 2. MRS can be issued only at all banks precharge state. A new command can be issued after 2 CLK cycles of MRS. 3. Auto refresh functions are as same as CBR refresh of DRAM. The automatical precharge without row precharge command is meant by "Auto". Auto/self refresh can be issued only at all banks precharge state. 4. BA0 ~ BA1 : Bank select addresses. If both BA0 and BA1 are "Low" at read, write, row active and precharge, bank A is selected. If both BA0 is "Low" and BA1 is "High" at read, write, row active and precharge, bank B is selected. If both BA0 is "High" and BA1 is "Low" at read, write, row active and precharge, bank C is selected. If both BA0 and BA1 are "High" at read, write, row active and precharge, bank D is selected. If A10/AP is "High" at row precharge, BA0 and BA1 is ignored and all banks are selected. 5. During burst read or write with auto precharge, new read/write command can not be issued. Another bank read/write command can be issued after the end of burst. New row active of the associated bank can be issued at tRP after the end of burst. 6. Burst stop command is valid at every burst length. 7. DM sampled at the rising and falling edges of the DQS and Data-in are masked at the both edges (Write DM latency is 0) |
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