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W9864G2GH

512K X 4 BANKS X 32BITS SDRAM

Table of Contents-

1.

2.

3.

4.

5.

6.

7.

GENERAL DESCRIPTION ......................................................................................................... 3

FEATURES ................................................................................................................................. 3

AVAILABLE PART NUMBER...................................................................................................... 4

PIN CONFIGURATION ............................................................................................................... 5

PIN DESCRIPTION..................................................................................................................... 6

BLOCK DIAGRAM ...................................................................................................................... 7

FUNCTIONAL DESCRIPTION.................................................................................................... 8

7.1

7.2

7.3

7.4

7.5

7.6

7.7

7.8

7.9

7.10

7.11

7.12

7.13

7.14

7.15

7.16

7.17

7.18

7.19

7.20

8.

9.

8.1

9.1

Power Up and Initialization ............................................................................................. 8

Programming Mode Register.......................................................................................... 8

Bank Activate Command ................................................................................................ 8

Read and Write Access Modes ...................................................................................... 8

Burst Read Command .................................................................................................... 9

Burst Command .............................................................................................................. 9

Read Interrupted by a Read ........................................................................................... 9

Read Interrupted by a Write............................................................................................ 9

Write Interrupted by a Write............................................................................................ 9

Write Interrupted by a Read............................................................................................ 9

Burst Stop Command ................................................................................................... 10

Addressing Sequence of Sequential Mode .................................................................. 10

Addressing Sequence of Interleave Mode.................................................................... 10

Auto-precharge Command ........................................................................................... 11

Precharge Command.................................................................................................... 11

Self Refresh Command ................................................................................................ 11

Power Down Mode ....................................................................................................... 12

No Operation Command............................................................................................... 12

Deselect Command ...................................................................................................... 12

Clock Suspend Mode.................................................................................................... 12

Simplified Stated Diagram ............................................................................................ 14

Absolute Maximum Ratings .......................................................................................... 15

OPERATION MODE ................................................................................................................. 13

ELECTRICAL CHARACTERISTICS......................................................................................... 15

-1-

Publication Release Date:Aug. 13, 2007

Revision A09

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