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CY7C25652KV18-400BZXC Datasheet(PDF) 11 Page - Cypress Semiconductor |
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CY7C25652KV18-400BZXC Datasheet(HTML) 11 Page - Cypress Semiconductor |
11 / 31 page CY7C25632KV18 CY7C25652KV18 Document Number: 001-66482 Rev. *D Page 11 of 31 Write Cycle Descriptions The write cycle description table for CY7C25652KV18 follows. [14, 15] BWS0 BWS1 BWS2 BWS3 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. Note 14. X = “Don't Care,” H = Logic HIGH, L = Logic LOW, represents rising edge. 15. Is based on a write cycle that was initiated in accordance with the Write Cycle Descriptions table. BWS0, BWS1, BWS2, and BWS3 can be altered on different portions of a write cycle, as long as the setup and hold requirements are achieved. |
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