CY7C1146V18, CY7C1157V18

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CY7C1148V18, CY7C1150V18

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The write cycle descriptions of CY7C1148V18 follows, [3, 9]

 

BWS

0

 

BWS

1

 

BWS

2

 

BWS

3

K

 

K

 

Comments

 

L

 

L

 

L

 

L

L – H

 

When the Data portion of a write sequence is active, all four bytes (D[35:0]) are

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

written into the device.

 

L

 

L

 

L

 

L

L – H

When the Data portion of a write sequence is active, all four bytes (D[35:0]) are

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

written into the device.

 

L

 

H

 

H

 

H

L – H

 

When the Data portion of a write sequence is active, only the lower byte (D[8:0]) is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

written into the device. D[35:9] remains unaltered.

 

L

 

H

 

H

 

H

L – H

When the Data portion of a write sequence is active, only the lower byte (D[8:0]) is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

written into the device. D[35:9] remains unaltered.

 

H

 

L

 

H

 

H

L – H

 

When the Data portion of a write sequence is active, 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

When the Data portion of a write sequence is active, 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

 

When the Data portion of a write sequence is active, 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

When the Data portion of a Write sequence is active, 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

 

When the Data portion of a write sequence is active, only the byte (D[35:27]) is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

written into the device. D[26:0] remains unaltered.

 

H

 

H

 

H

 

L

L – H

When the Data portion of a write sequence is active, 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 when this portion of a write operation is active.

 

 

 

 

 

 

 

 

 

 

 

 

H

 

H

 

H

 

H

L – H

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Document Number: 001-06621 Rev. *D

Page 11 of 27

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Cypress CY7C1157V18, CY7C1146V18, CY7C1150V18 Write cycle descriptions of CY7C1148V18 follows, 3, Written into the device