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CY7C139-15 Datasheet(PDF) 10 Page - Cypress Semiconductor

Part # CY7C139-15
Description  4K x 8/9 Dual-Port Static RAM
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

CY7C139-15 Datasheet(HTML) 10 Page - Cypress Semiconductor

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CY7C138
CY7C139
10
Note:
29. If tPS is violated, the busy signal will be asserted on one side or the other, but there is no guarantee on which side BUSY will be asserted.
Switching Waveforms (continued)
ADDRESS MATCH
tPS
tBLC
tBHC
ADDRESS MATCH
tPS
tBLC
tBHC
CER Valid First:
C138-17
ADDRESSL,R
BUSYR
CEL
CER
BUSY L
CER
CEL
ADDRESSL,R
C138-18
CEL Valid First:
Busy Timing Diagram No. 1 (CE Arbitration)
[29]
ADDRESS MATCH
tPS
ADDRESS L
BUSYR
ADDRESS MISMATCH
tRC or tWC
tBLA
tBHA
ADDRESSR
ADDRESS MATCH
ADDRESS MISMATCH
tPS
ADDRESSL
BUSY L
tRC or tWC
tBLA
tBHA
ADDRESSR
C138-19
C138-20
Busy Timing Diagram No. 2 (Address Arbitration)
Left Address Valid First:
Right Address Valid First:
[29]


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