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MK31VT864A Datasheet(PDF) 9 Page - OKI electronic componets |
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MK31VT864A Datasheet(HTML) 9 Page - OKI electronic componets |
9 / 11 page MK31VT864A-8YC Ñ98.07.17Ò Page 9/11 FUNCTION TRUTH TABLE (Table1)(1/2) Current State /CS /RAS /CAS /WE BA ADDR Action Idle H X X X X X NOP LH H H X X NOP L H H L BA X ILLEGAL 2 L H L X BA CA ILLEGAL 2 L L H H BA RA Row Active L L H L BA A10 NOP 4 L L L H X X Auto-Refresh or Self-Refresh 5 L L L L L OP Code Mode Register write Row Active H X X X X X NOP LH H X X X NOP L H L H BA CA, A10 Read L H L L BA CA, A10 Write L L H H BA RA ILLEGAL 2 L L H L BA A10 Precharge LLL X X X ILLEGAL Read H X X X X X NOP (Continue Row Active after Burst ends) L H H H X X NOP (Continue Row Active after Burst ends) L H H L BA X Burst Stop L H L H BA CA, A10 Term Burst, start new Burst Read 3 L H L L BA CA, A10 Term Burst, start new Burst Write 3 L L H H BA RA ILLEGAL 2 L L H L BA A10 Term Burst, execute Row Precharge LLL X X X ILLEGAL Write H X X X X X NOP (Continue Row Active after Burst ends) L H H H X X NOP (Continue Row Active after Burst ends) L H H L BA X Burst Stop L H L H BA CA, A10 Term Burst, start new Burst Read 3 L H L L BA CA, A10 Term Burst, start new Burst Write 3 L L H H BA RA ILLEGAL 2 L L H L BA A10 Term Burst, execute Row Precharge 3 LLL X X X ILLEGAL Read with H X X X X X NOP (Continue Burst to End and enter Row Precharge) Auto Precharge L H H H X X NOP (Continue Burst to End and enter Row Precharge) L H H L BA X ILLEGAL 2 L H L H BA CA, A10 ILLEGAL 2 L H L L X X ILLEGAL L L H X BA RA, A10 ILLEGAL 2 LLL X X X ILLEGAL Write with H X X X X X NOP (Continue Burst to End and enter Row Precharge) Auto Precharge L H H H X X NOP (Continue Burst to End and enter Row Precharge) L H H L BA X ILLEGAL 2 L H L H BA CA, A10 ILLEGAL 2 L H L L X X ILLEGAL L L H X BA RA, A10 ILLEGAL 2 LLL X X X ILLEGAL |
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