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M2V56D30ATP-75A Datasheet(PDF) 11 Page - Mitsubishi Electric Semiconductor |
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M2V56D30ATP-75A Datasheet(HTML) 11 Page - Mitsubishi Electric Semiconductor |
11 / 37 page 11 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 for CKE ABBREVIATIONS: H=High Level, L=Low Level, X=Don't Care NOTES: 1. CKE Low to High transition will re-enable CLK and other inputs asynchronously. A minimum setup time must be satisfied before any command other than EXIT. 2. Power-Down and Self-Refresh can be entered only from the All Banks Idle State. 3. Must be legal command. Current State CKE n-1 CKE n /CS /RAS /CAS /WE Address Action Notes H X X X X X X INVALID 1 L H H X X X X Exit Self-Refresh (Idle after tRC) 1 L H L H H H X Exit Self-Refresh (Idle after tRC) 1 L H L H H L X ILLEGAL 1 L H L H L X X ILLEGAL 1 L H L L X X X ILLEGAL 1 L L X X X X X NOP (Maintain Self-Refresh) 1 H X X X X X X INVALID L H X X X X X Exit Power Down to Idle L L X X X X X NOP (Maintain Self-Refresh) H H X X X X X Refer to Function Truth Table 2 H L L L L H X Enter Self-Refresh 2 H L H X X X X Enter Power Down 2 H L L H H H X Enter Power Down 2 H L L H H L X ILLEGAL 2 H L L H L X X ILLEGAL 2 H L L L X X X ILLEGAL 2 L X X X X X X Refer to Current State =Power Down 2 H H X X X X X Refer to Function Truth Table H L X X X X X Begin CLK Suspend at Next Cycle 3 L H X X X X X Exit CLK Suspend at Next Cycle 3 L L X X X X X Maintain CLK Suspend ANY STATE other than listed above SELF- REFRESHING POWER DOWN ALL BANKS IDLE |
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