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IS42VM32400H Datasheet(PDF) 14 Page - Integrated Silicon Solution, Inc |
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IS42VM32400H Datasheet(HTML) 14 Page - Integrated Silicon Solution, Inc |
14 / 33 page 14 IS42/45SM/RM/VM32400H Advanced Information Rev. 00A | Nov. 2014 www.issi.com - DRAM@issi.com Table5: Function Truth Table Current State Command Action Note /CS /RAS /CAS /WE BA A0-A11 Description Precharging L L L L OP CODE Mode Register Set ILLEGAL 13,14 L L L H X X Auto or Self Refresh ILLEGAL 13 L L H L BA X Precharge No Operation : Bank(s) Idle after tRP L L H H BA Row Add. Bank Activate ILLEGAL 4,12 L H L L BA Col Add./ A10 Write/WriteAP ILLEGAL 4,12 L H L H BA Col Add./ A10 Read/ReadAP ILLEGAL 4,12 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 L H H L X X Burst Stop No Operation : Bank(s) Idle after tRP Row Activating L L L L OP CODE Mode Register Set ILLEGAL 13,14 L L L H X X Auto or Self Refresh ILLEGAL 13 L L H L BA X Precharge ILLEGAL 4,12 L L H H BA Row Add. Bank Activate ILLEGAL 4,11,12 L H L L BA Col Add./A10 Write/Write AP ILLEGAL 4,12 L H L H BA Col Add./A10 Read/Read AP ILLEGAL 4,12 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 L H H L X X Burst Stop No Operation : Row Active after tRCD Write Recovering L L L L OP CODE Mode Register Set ILLEGAL 13,14 L L L H X X Auto or Self Refresh ILLEGAL 13 L L H L BA X Precharge ILLEGAL 4,13 L L H H BA Row Add. Bank Activate ILLEGAL 4,12 L H L L BA Col Add./A10 Write/WriteAP Start Write : Optional AP(A10=H) L H L H BA Col Add./A10 Read/Read AP Start Write : Optional AP(A10=H) 9 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 L H H L X X Burst Stop No Operation : Row Active after tDPL |
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