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FEDD56V62160E-07 Datasheet(PDF) 6 Page - Rohm |
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FEDD56V62160E-07 Datasheet(HTML) 6 Page - Rohm |
6 / 33 page FEDD56V62160E-07 MD56V62160E 6/33 Mode Set Address Keys Single Write CAS Latency Burst Type Burst Length A9 BRSW A6 A5 A4 CL A3 BT A2 A1 A0 BT = 0 BT = 1 0 Normal 0 0 0 Reserved 0 Sequential 00 0 1 1 1 Single Write 0 0 1 Reserved 1 Interleave 0 0 1 2 2 0 1 0 2 0 1 0 4 4 0 1 1 3 0 1 1 8 8 1 0 0 Reserved 1 0 0 Reserved Reserved 1 0 1 Reserved 1 0 1 Reserved Reserved 1 1 0 Reserved 1 1 0 Reserved Reserved 1 1 1 Reserved 1 1 1 Full Page Reserved Notes: A7, A8, A10, A11, A12 and A13 should stay “L” during mode set cycle. MD56V62160E supports two methods of Power on Sequence. POWER ON SEQUENCE 1 1. With inputs in NOP state, turn on the power supply and start the system clock. 2. After the VCC voltage has reached the specified level, pause for 200 s or more with the input kept in NOP state. 3. Issue the precharge all bank command. 4. Apply a CBR auto-refresh eight or more times. 5. Enter the mode register setting command. POWER ON SEQUENCE 2 1. With inputs in NOP state, turn on the power supply and start the system clock. 2. After the VCC voltage has reached the specified level, pause for 200 s or more with the input kept in NOP state. 3. Issue the precharge all bank command. 4. Enter the mode register setting command. 5. Apply a CBR auto-refresh eight or more times. |
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