Cypress CY7C1146V18, CY7C1148V18, CY7C1150V18, CY7C1157V18 CY7C1146V18, CY7C1157V18 CY7C1148V18, CY7C1150V18

CY7C1146V18, CY7C1157V18
CY7C1148V18, CY7C1150V18
Document Number: 001-06621 Rev. *D Page 11 of 27
The write cycle descriptions of CY7C1148V18 follows, [3, 9]
BWS0BWS1BWS2BWS3K K Comments
LLLLL – H–When the Data portion of a write sequence is active, all four bytes (D[35:0]) are
written into the device.
LLLL–L – HWhen 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 Whe n 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.
HHHHL – H–No data is written into the device when this portion of a write operation is active.
HHHH–L – HNo data is written into the device when this portion of a write operation is active.
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