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WED48S8030E Datasheet(PDF) 9 Page - White Electronic Designs Corporation |
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WED48S8030E Datasheet(HTML) 9 Page - White Electronic Designs Corporation |
9 / 26 page WED48S8030E 9 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com White Electronic Designs White Electronic Designs Corp. reserves the right to change products or specifications without notice. February, 2002 Rev. 2 CURRENT STATE TRUTH TABLE (cont.) Current State Command Action Notes CE# RAS# CAS# WE# BA0-1 A11, A10/AP-A0 Description Write with Auto Precharge L L L L OP Code Mode Register Set ILLEGAL L L L H X X Auto orSelf Refresh ILLEGAL L L H L X X Precharge ILLEGAL 4 L L H H BA Row Address Bank Activate ILLEGAL 4 L H L L BA Column Write ILLEGAL L H L H BA Column Read ILLEGAL L H H L X X Burst Termination ILLEGAL L H H H X X No Operation Continue the Burst H X X X X X Device Deselect Continue the Burst Precharging L L L L OP Code Mode Register Set ILLEGAL L L L H X X Auto orSelf Refresh ILLEGAL L L H L X X Precharge No Operation; Bank(s) idle after tRP L L H H BA Row Address Bank Activate ILLEGAL 4 L H L L BA Column Write w/o Precharge ILLEGAL 4 L H L H BA Column Read w/o Precharge ILLEGAL 4 L H H L X X Burst Termination No Operation; Bank(s) idle after tRP L H H H X X No Operation No Operation; Bank(s) idle after tRP H X X X X X Device Deselect No Operation; Bank(s) idle after tRP Row Activating L L L L OP Code Mode Register Set ILLEGAL L L L H X X Auto orSelf Refresh ILLEGAL L L H L X X Precharge ILLEGAL 4 L L H H BA Row Address Bank Activate ILLEGAL 4,10 L H L L BA Column Write ILLEGAL 4 L H L H BA Column Read ILLEGAL 4 L H H L X X Burst Termination No Operation; Row active after tRCD L H H H X X No Operation No Operation; Row active after tRCD H X X X X X Device Deselect No Operation; Row active after tRCD Write Recovering L L L L OP Code Mode Register Set ILLEGAL L L L H X X Auto orSelf Refresh ILLEGAL L L H L X X Precharge ILLEGAL 4 L L H H BA Row Address Bank Activate ILLEGAL 4 L H L L BA Column Write Start Write; Determine if Auto Precharge 9 L H L H BA Column Read Start Read; Determine if Auto Precharge 9 L H H L X X Burst Termination No Operation; Row active after tDPL L H H H X X No Operation No Operation; Row active after tDPL H X X X X X Device Deselect No Operation; Row active after tDPL Write Recovering with Auto Precharge L L L L OP Code Mode Register Set ILLEGAL L L L H X X Auto orSelf Refresh ILLEGAL L L H L X X Precharge ILLEGAL 4 L L H H BA Row Address Bank Activate ILLEGAL 4 L H L L BA Column Write ILLEGAL 4,9 L H L H BA Column Read ILLEGAL 4,9 L H H L X X Burst Termination No Operation; Precharge after tDPL L H H H X X No Operation No Operation; Precharge after tDPL H X X X X X Device Deselect No Operation; Precharge after tDPL |
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