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HDD16M64F8 Datasheet(PDF) 9 Page - Hanbit Electronics Co.,Ltd |
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HDD16M64F8 Datasheet(HTML) 9 Page - Hanbit Electronics Co.,Ltd |
9 / 11 page HANBit HDD16M64F8 URL : www.hbe.co.kr 9 HANBit Electronics Co.,Ltd. REV 1.0(August.2002) 4. The maximum limit for this parameter is not a device limit. The device will operate with a great value for this parameter, but system performance (bus turnaround) will degrade accordingly. SIMPLIFIED TRUTH TABLE COMMAND CKE n-1 CKE n /CS /R A S /C A S /WE DM BA 0,1 A10/ AP A11 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 refres h 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 Precharg e 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 ~ A11 & 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. |
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