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Write cycle descriptions – Cypress CY7C1316CV18 User Manual

Page 11

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CY7C1316CV18, CY7C1916CV18
CY7C1318CV18, CY7C1320CV18

Document Number: 001-07160 Rev. *E

Page 11 of 29

Write Cycle Descriptions

The write cycle description table for CY7C1916CV18 follows.

[2, 8]

BWS

0

K

K

Comments

L

L–H

During the data portion of a write sequence, the single byte (D

[8:0]

) is written into the device.

L

L–H

During the data portion of a write sequence, the single byte (D

[8:0]

) is written into the device.

H

L–H

No data is written into the device during this portion of a write operation.

H

L–H

No data is written into the device during this portion of a write operation.

Write Cycle Descriptions

The write cycle description table for CY7C1320CV18 follows.

[2, 8]

BWS

0

BWS

1

BWS

2

BWS

3

K

K

Comments

L

L

L

L

L–H

During the data portion of a write sequence, all four bytes (D

[35:0]

) are written into

the device.

L

L

L

L

L–H During the data portion of a write sequence, all four bytes (D

[35:0]

) are written into

the device.

L

H

H

H

L–H

During the data portion of a write sequence, only the lower byte (D

[8:0]

) is written

into the device. D

[35:9]

remains unaltered.

L

H

H

H

L–H During the data portion of a write sequence, only the lower byte (D

[8:0]

) is written

into the device. D

[35:9]

remains unaltered.

H

L

H

H

L–H

During the data portion of a write sequence, only the byte (D

[17:9]

) is written into

the device. D

[8:0]

and D

[35:18]

remains unaltered.

H

L

H

H

L–H During the data portion of a write sequence, only the byte (D

[17:9]

) is written into

the device. D

[8:0]

and D

[35:18]

remains unaltered.

H

H

L

H

L–H

During the data portion of a write sequence, only the byte (D

[26:18]

) is written into

the device. D

[17:0]

and D

[35:27]

remains unaltered.

H

H

L

H

L–H During the data portion of a write sequence, only the byte (D

[26:18]

) is written into

the device. D

[17:0]

and D

[35:27]

remains unaltered.

H

H

H

L

L–H

During the data portion of a write sequence, only the byte (D

[35:27]

) is written into

the device. D

[26:0]

remains unaltered.

H

H

H

L

L–H During the data portion of a write sequence, only the byte (D

[35:27]

) is written into

the device. D

[26:0]

remains unaltered.

H

H

H

H

L–H

No data is written into the device during this portion of a write operation.

H

H

H

H

L–H No data is written into the device during this portion of a write operation.

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