CY7C1310AV18CY7C1312AV18CY7C1314AV18 PRELIMINARY
Document #: 38-05497 Rev. *A Page 8 of 21
Write Cycle Descriptions (CY7C1310AV18 and CY7C1312AV18)[2, 8]
BWS0BWS1KK Comments
L L L-H – During the Data portion of a Write sequence :
CY7C1310AV18 − both nibbles (D[7:0]) are written into the device,
CY7C1312AV18 − both bytes (D[17:0]) are written into the device.
L L – L-H During the Data portion of a Write sequence :
CY7C1310AV18 − both nibbles (D[7:0]) are written into the device,
CY7C1312AV18 − both bytes (D[17:0]) are written into the device.
L H L-H – During the Data portion of a Write sequence :
CY7C1310AV18 − only the lower nibble (D[3:0]) is written into the device. D[7:4] will remain unaltered,
CY7C1312AV18 − only the lower byte (D[8:0]) is written into the device. D[17:9] will remain unaltered.
L H – L-H During the Data portion of a Write sequence :
CY7C1310AV18 − only the lower nibble (D[3:0]) is written into the device. D[7:4] will remain unaltered,
CY7C1312AV18 − only the lower byte (D[8:0]) is written into the device. D[17:9] will remain unaltered.
H L L-H – During the Data portion of a Write sequence :
CY7C1310AV18 − only the upper nibble (D[7:4]) is written into the device. D[3:0] will remain unaltered,
CY7C1312AV18 − only the upper byte (D[17:9]) is written into the device. D[8:0] will remain unaltered.
H L – L-H During the Data portion of a Write sequence :
CY7C1310AV18 − only the upper nibble (D[7:4]) is written into the device. D[3:0] will remain unaltered,
CY7C1312AV18 − only the upper byte (D[17:9]) is written into the device. D[8:0] will remain 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 (CY7C1314AV18)[2, 8]
BWS0BWS1BWS2BWS3KK 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] will remain 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] will remain 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] will remain 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] will remain 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] will remai n 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] will remai n 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] will remain 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] will remain 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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