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M2V56D20ATP-75L Datasheet(PDF) 8 Page - Mitsubishi Electric Semiconductor |
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M2V56D20ATP-75L Datasheet(HTML) 8 Page - Mitsubishi Electric Semiconductor |
8 / 37 page 8 MITSUBISHI ELECTRIC Jul. '01 Preliminary MITSUBISHI LSIs DDR SDRAM (Rev.1.0) M2S56D20/ 30/ 40AKT 256 M Double Data Rate Synchronous DRAM FUNCTION TRUTH TABLE (continued) Current State /CS /RAS /CAS /WE Address Command Action Notes H X X X X DESEL NOP (Continue Burst to END) L H H H X NOP NOP (Continue Burst to END) L H H L BA TERM ILLEGAL L H L H BA, CA, A10 READ / READA Terminate Burst, Latch CA, Begin Read, Determine Auto-Precharge 3 L H L L BA, CA, A10 WRITE / WRITEA Terminate Burst, Latch CA, Begin Write, Determine Auto-Precharge 3 L L H H BA, RA ACT Bank Active / ILLEGAL 2 L L H L BA, A10 PRE / PREA Terminate Burst, Precharge L L L H X REFA ILLEGAL L L L L Op-Code, Mode- Add MRS ILLEGAL H X X X X DESEL NOP (Continue Burst to END) L H H H X NOP NOP (Continue Burst to END) L H H L BA TERM ILLEGAL L H L H BA, CA, A10 READ / READA ILLEGAL for Same Bank 6 L H L L BA, CA, A10 WRITE / WRITEA ILLEGAL for Same Bank 6 L L H H BA, RA ACT Bank Active / ILLEGAL 2 L L H L BA, A10 PRE / PREA Precharge / ILLEGAL 2 L L L H X REFA ILLEGAL L L L L Op-Code, Mode- Add MRS ILLEGAL H X X X X DESEL NOP (Continue Burst to END) L H H H X NOP NOP (Continue Burst to END) L H H L BA TERM ILLEGAL L H L H BA, CA, A10 READ / READA ILLEGAL for Same Bank 7 L H L L BA, CA, A10 WRITE / WRITEA ILLEGAL for Same Bank 7 L L H H BA, RA ACT Bank Active / ILLEGAL 2 L L H L BA, A10 PRE / PREA Precharge / ILLEGAL 2 L L L H X REFA ILLEGAL L L L L Op-Code, Mode- Add MRS ILLEGAL WRITE(Auto- Precharge Disabled) READ with Auto-Precharge WRITE with Auto-Precharge |
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