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Cypress CY7C1310BV18 用户手册

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页码 共 29
CY7C1310BV18, CY7C1910BV18
CY7C1312BV18, CY7C1314BV18
Document #: 38-05619 Rev. *F
Page 11 of 29
Write Cycle Descriptions
The write cycle description table for CY7C1910BV18 follows.
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 CY7C1314BV18 follows.
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.