256 x 9, 512 x 9, 1K x 9, 2K x 9, 4K x 9 Cascadable FIFO

CY7C419/21/25/29/33Switching Characteristics Over the Operating Range [6, 7] (continued)7C419–307C420–307C421–307C424–307C425–307C428–307C429–307C432–307C433–307C419–407C420–407C421–407C424–407C425–407C428–407C429–407C432–407C433–407C419–657C420–657C421–657C424–657C425–657C428–657C429–657C432–657C433–65Parameter Description Min. Max. Min. Max. Min. Max. Unitt RC Read Cycle Time 40 50 80 nst A Access Time 30 40 65 nst RR Read Recovery Time 10 10 15 nst PR Read Pulse Width 30 40 65 ns[5,8]t LZR Read LOW to Low Z 3 3 3 ns[8,9]t DVR Data Valid After Read HIGH 5 5 5 ns[5,8,9]t HZR Read HIGH to High Z 20 20 20 nst WC Write Cycle Time 40 50 80 nst PW Write Pulse Width 30 40 65 ns[5,8]t HWZ Write HIGH to Low Z 5 5 5 nst WR Write Recovery Time 10 10 15 nst SD Data Set-Up Time 18 20 30 nst HD Data Hold Time 0 0 0 nst MRSC MR Cycle Time 40 50 80 nst PMR MR Pulse Width 30 40 65 nst RMR MR Recovery Time 10 10 15 nst RPW Read HIGH to MR HIGH 30 40 65 nst WPW Write HIGH to MR HIGH 30 40 65 nst RTC Retransmit Cycle Time 40 50 80 nst PRT Retransmit Pulse Width 30 40 65 nst RTR Retransmit Recovery Time 10 10 15 nst EFL MR to EF LOW 40 50 80 nst HFH MR to HF HIGH 40 50 80 nst FFH MR to FF HIGH 40 50 80 nst REF Read LOW to EF LOW 30 35 60 nst RFF Read HIGH to FF HIGH 30 35 60 nst WEF Write HIGH to EF HIGH 30 35 60 nst WFF Write LOW to FF LOW 30 35 60 nst WHF Write LOW to HF LOW 30 35 60 nst RHF Read HIGH to HF HIGH 30 35 60 nst RAE Effective Read from Write HIGH 30 35 60 nst RPE Effective Read Pulse Width After EF HIGH 30 40 65 nst WAF Effective Write from Read HIGH 30 35 60 nst WPF Effective Write Pulse Width After FF HIGH 30 40 65 nst XOL Expansion Out LOW Delay from Clock 30 40 65 nst XOH Expansion Out HIGH Delay from Clock 30 40 65 ns6