MD56V62160E Просмотр технического описания (PDF) - Oki Electric Industry
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MD56V62160E Datasheet PDF : 34 Pages
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OKI Semiconductor
FEDD56V62160E-01
MD56V62160E
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 0 0 0
1
1
1 Single Write 0 0 1
1
1 Interleave 0 0 1
2
2
010
2
010
4
4
011
3
011
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 µs 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 µs 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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