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M2S56D30ATP-75A Datasheet(PDF) 10 Page - Mitsubishi Electric Semiconductor |
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M2S56D30ATP-75A Datasheet(HTML) 10 Page - Mitsubishi Electric Semiconductor |
10 / 37 page 10 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) ABBREVIATIONS: H=High Level, L=Low Level, X=Don't Care BA=Bank Address, RA=Row Address, CA=Column Address, NOP=No Operation NOTES: 1. All entries assume that CKE was High during the preceding clock cycle and the current clock cycle. 2. ILLEGAL to bank in specified state; function may be legal in the bank indicated by BA, depending on the state of that bank. 3. Must satisfy bus contention, bus turn around, write recovery requirements. 4. NOP to bank precharging or in idle state. May precharge bank indicated by BA. 5. ILLEGAL if any bank is not idle. 6. Refer to Read with Auto -Precharge in page 24. 7. Refer to Write with Auto-Precharge in page 26. ILLEGAL = Device operation and/or data-integrity are not guaranteed. Current State /CS /RAS /CAS /WE Address Command Action Notes REFRESHING H X X X X DESEL NOP (Idle after tRC) L H H H X NOP NOP (Idle after tRC) L H H L BA TERM ILLEGAL L H L X BA, CA, A10 READ / WRITE ILLEGAL L L H H BA, RA ACT ILLEGAL L L H L BA, A10 PRE / PREA ILLEGAL L L L H X REFA ILLEGAL L L L L Op-Code, Mode- Add MRS ILLEGAL H X X X X DESEL NOP (Row Active after tRSC) L H H H X NOP NOP (Row Active after tRSC) L H H L BA TERM ILLEGAL L H L X BA, CA, A10 READ / WRITE ILLEGAL L L H H BA, RA ACT ILLEGAL L L H L BA, A10 PRE / PREA ILLEGAL L L L H X REFA ILLEGAL L L L L Op-Code, Mode- Add MRS ILLEGAL MODE REGISTER SETTING |
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