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FX919B датащи(PDF) 43 Page - CML Microcircuits |
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FX919B датащи(HTML) 43 Page - CML Microcircuits |
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43 / 47 page ![]() 4-Level FSK Modem Data Pump FX919B © 1997 Consumer Microcircuits Limited 43 D/919B/1 Notes Min. Typ. Max. Units µµC Parallel Interface Timings (ref. Figure 23) tACSL Address valid to CSN low time 0 ns tAH Address hold time 0 ns tCSH CSN hold time 0 ns tCSHI CSN high time 10 6 clock cycles tCSRWL CSN to WRN or RDN low time 0 ns tDHR Read data hold time 0 ns tDHW Write data hold time 0 ns tDSW Write data setup time 90 ns tRHCSL RDN high to CSN low time (write) 0 ns tRACL Read access time from CSN low 11 175 ns tRARL Read access time from RDN low 11 145 ns tRL RDN low time 200 ns tRX RDN high to D0-D7 3-state time 50 ns tWHCSL WRN high to CSN low time (read) 0 ns tWL WRN low time 200 ns Notes: 10. Xtal/Clock cycles at the XTAL/CLOCK pin. 11. With 30pF max to VSS on D0 - D7 pins. Figure 23 µµC Parallel Interface Timings |
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