CY7C1663KV18 datasheet(10/31 Pages) CYPRESS

10 / 31 page

Document Number: 001-44060 Rev. *O

Page 10 of 31

CY7C1663KV18/CY7C1665KV18

Write Cycle Descriptions

The write cycle description table for CY7C1663KV18 follows. [11, 12]

BWS0 BWS1

Comments

L–H

–

During the data portion of a write sequence



CY7C1663KV18

both bytes (D[17:0]) are written into the device.

–

L–H During the data portion of a write sequence:

CY7C1663KV18

both bytes (D[17:0]) are written into the device.

L–H

–

During the data portion of a write sequence:

CY7C1663KV18

only the lower byte (D[8:0]) is written into the device, D[17:9] remains unaltered.

–

L–H During the data portion of a write sequence



CY7C1663KV18

only the lower byte (D[8:0]) is written into the device, D[17:9] remains unaltered.

L–H

–

During the data portion of a write sequence



CY7C1663KV18

only the upper byte (D[17:9]) is written into the device, D[8:0] remains unaltered.

–

L–H During the data portion of a write sequence



CY7C1663KV18

only the upper byte (D[17:9]) is written into the device, D[8:0] remains unaltered.

L–H

–

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

–

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

Notes

11. X = “Don't Care,” H = Logic HIGH, L = Logic LOW,

represents rising edge.

12. Is based on a write cycle that was initiated in accordance with the Truth Table on page 9. BWS0, BWS1, BWS2, and BWS3 can be altered on different portions of a

write cycle, as long as the setup and hold requirements are achieved.

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