9

Data Sheet M15825EJ7V

1DS

Byte Write Operation

[

Operation

K

/K

/NW0

/NW1

Write D0 to D7

L

→ H

–

0

0

–

L

→ H

0

0

Write D0 to D3

L

→ H

–

0

1

–

L

→ H

0

1

Write D4 to D7

L

→ H

–

1

0

–

L

→ H

1

0

Write nothing

L

→ H

–

1

1

–

L

→ H

1

1

Remarks 1. H : High level, L : Low level,

→ : rising edge.

2. Assumes a WRITE cycle was initiated. /NW0 and /NW1 can be altered for any portion of the BURST

WRITE operation provided that the setup and hold requirements are satisfied.

[

Operation

K

/K

/BW0

/BW1

Write D0 to D17

L

→ H

–

0

0

–

L

→ H

0

0

Write D0 to D8

L

→ H

–

0

1

–

L

→ H

0

1

Write D9 to D17

L

→ H

–

1

0

–

L

→ H

1

0

Write nothing

L

→ H

–

1

1

–

L

→ H

1

1

Remarks 1. H : High level, L : Low level,

→ : rising edge.

2. Assumes a WRITE cycle was initiated. /BW0 and /BW1 can be altered for any portion of the BURST

WRITE operation provided that the setup and hold requirements are satisfied.

[

Operation

K

/K

/BW0

/BW1

/BW2

/BW3

Write D0 to D35

L

→ H

–

0

0

0

0

–

L

→ H

0

0

0

0

Write D0 to D8

L

→ H

–

0

1

1

1

–

L

→ H

0

1

1

1

Write D9 to D17

L

→ H

–

1

0

1

1

–

L

→ H

1

0

1

1

Write D18 to D26

L

→ H

–

1

1

0

1

–

L

→ H

1

1

0

1

Write D27 to D35

L

→ H

–

1

1

1

0

–

L

→ H

1

1

1

0

Write nothing

L

→ H

–

1

1

1

1

–

L

→ H

1

1

1

1

Remarks 1. H : High level, L : Low level,

→ : rising edge.

2. Assumes a WRITE cycle was initiated. /BW0 to /BW3 can be altered for any portion of the BURST

WRITE operation provided that the setup and hold requirements are satisfied.