Datasheet
CY7C1513JV18
CY7C1515JV18
Document Number: 001-12560 Rev. *F Page 9 of 24
Write Cycle Descriptions
The write cycle description table for CY7C1513JV18 follows.
[2, 10]
BWS
0
BWS
1
K
K
Comments
L L L–H – During the data portion of a write sequence:
Both bytes (D
[17:0]
) are written into the device.
L L – L-H During the data portion of a write sequence:
Both bytes (D
[17:0]
) are written into the device.
L H L–H – During the data portion of a write sequence:
Only the lower byte (D
[8:0]
) is written into the device, D
[17:9]
remains unaltered.
L H – L–H During the data portion of a write sequence:
Only the lower byte (D
[8:0]
) is written into the device, D
[17:9]
remains unaltered.
H L L–H – During the data portion of a write sequence:
Only the upper byte (D
[17:9]
) is written into the device, D
[8:0]
remains unaltered.
H L – L–H During the data portion of a write sequence:
Only the upper byte (D
[17:9]
) is written into the device, D
[8:0]
remains unaltered.
H H L–H – No data is written into the devices during this portion of a write operation.
H H – L–H No data is written into the devices during this portion of a write operation.
Write Cycle Descriptions
The write cycle description table for CY7C1515JV18 follows.
[2, 10]
BWS
0
BWS
1
BWS
2
BWS
3
K K Comments
LLLLL–H–During the data portion of a write sequence, all four bytes (D
[35:0]
) are written into
the device.
LLLL–L–HDuring 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.
HHHHL–H–No data is written into the device during this portion of a write operation.
HHHH–L–HNo data is written into the device during this portion of a write operation.
Note
10. Is based on a write cycle that was initiated in accordance with the Write Cycle Descriptions table. BWS
0
, BWS
1
, BWS
2
,
and BWS
3
can be altered on different portions
of a write cycle, as long as the setup and hold requirements are achieved.
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