WEDPNF8M721V-1215BM 查看數據表（PDF） - White Electronic Designs => Micro Semi

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WEDPNF8M721V-1215BM

8Mx72 Synchronous DRAM + 8Mb Flash Mixed Module Multi-Chip Package

White Electronic Designs => Micro Semi 

White Electronic Designs WEDPNF8M721V-XBX

FIG. 3 MODE REGISTER DEFINITION

TABLE 1 - BURST DEFINITION

Burst

Length

Starting Column

Address

Order of Accesses Within a Burst

Type = Sequential Type = Interleaved

A0

2

0

0-1

0-1

1

1-0

1-0

A1 A0

00

0-1-2-3

0-1-2-3

4

01

1-2-3-0

1-0-3-2

10

2-3-0-1

2-3-0-1

11

3-0-1-2

3-2-1-0

A2 A1 A0

000

0-1-2-3-4-5-6-7 0-1-2-3-4-5-6-7

001

1-2-3-4-5-6-7-0 1-0-3-2-5-4-7-6

010

2-3-4-5-6-7-0-1 2-3-0-1-6-7-4-5

8

011

3-4-5-6-7-0-1-2 3-2-1-0-7-6-5-4

100

4-5-6-7-0-1-2-3 4-5-6-7-0-1-2-3

101

5-6-7-0-1-2-3-4 5-4-7-6-1-0-3-2

110

6-7-0-1-2-3-4-5 6-7-4-5-2-3-0-1

111

7-0-1-2-3-4-5-6 7-6-5-4-3-2-1-0

Full

Page

(y)

n = A0-9/8/7

(location 0-y)

Cn, Cn + 1, Cn + 2

Cn + 3, Cn + 4...

…Cn - 1,

Cn…

Not Supported

NOTES:

1. For full-page accesses: y = 512.

2. For a burst length of two, A1-8 select the block-of-two burst; A0 selects the

starting column within the block.

3. For a burst length of four, A2-8 select the block-of-four burst; A0-1 select the

starting column within the block.

4. For a burst length of eight, A3-8 select the block-of-eight burst; A0-2 select

the starting column within the block.

5. For a full-page burst, the full row is selected and A0-8 select the starting

column.

6. Whenever a boundary of the block is reached within a given sequence

above, the following access wraps within the block.

7. For a burst length of one, A0-8 select the unique column to be accessed, and

Mode Register bit M3 is ignored.

9

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