MSM56V16800F 데이터 시트보기 (PDF) - Oki Electric Industry

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MSM56V16800F

2-Bank x 1,048,576 Word x 8 Bit SYNCHRONOUS DYNAMIC RAM

Oki Electric Industry 

MSM56V16800F

Mode Set Address Keys

CAS Latency

Burst Type

Burst Length

A6 A5 A4

CL

A3

BT

A2 A1 A0 BT = 0

0 0 0 Reserved 0 Sequential 0 0 0

1

001

1

1 Interleave 0 0 1

2

010

2

010

4

011

3

011

8

1 0 0 Reserved

1 0 0 Reserved

1 0 1 Reserved

1 0 1 Reserved

1 1 0 Reserved

1 1 0 Reserved

1 1 1 Reserved

1 1 1 Full Page

Notes: A7, A8, A9, A10 and A11 should stay “L” during mode set cycle.

BT = 1

1

2

4

8

Reserved

Reserved

Reserved

Reserved

POWER ON SEQUENCE

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 200ms 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.

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