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M2S56D30AKT-10 Datasheet(PDF) 7 Page - Mitsubishi Electric Semiconductor |
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M2S56D30AKT-10 Datasheet(HTML) 7 Page - Mitsubishi Electric Semiconductor |
7 / 37 page 7 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 Current State /CS /RAS /CAS /WE Address Command Action Notes IDLE H X X X X DESEL NOP L H H H X NOP NOP L H H L BA TERM ILLEGAL 2 L H L X BA, CA, A10 READ / WRITE ILLEGAL 2 L L H H BA, RA ACT Bank Active, Latch RA L L H L BA, A10 PRE / PREA NOP 4 L L L H X REFA Auto-Refresh 5 L L L L Op-Code, Mode- Add MRS Mode Register Set 5 ROW ACTIVE H X X X X DESEL NOP L H H H X NOP NOP L H H L BA TERM NOP L H L H BA, CA, A10 READ / READA Begin Read, Latch CA, Determine Auto-Precharge L H L L BA, CA, A10 WRITE / WRITEA Begin Write, Latch CA, Determine Auto-Precharge L L H H BA, RA ACT Bank Active / ILLEGAL 2 L L H L BA, A10 PRE / PREA Precharge / Precharge All 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 Terminate Burst L H L H BA, CA, A10 READ / READA Terminate Burst, Latch CA, Begin New Read, Determine Auto- Precharge 3 L H L L BA, CA, A10 WRITE / WRITEA ILLEGAL 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 READ(Auto- Precharge Disabled) |
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