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SCN26562 Datasheet(PDF) 8 Page - NXP Semiconductors |
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SCN26562 Datasheet(HTML) 8 Page - NXP Semiconductors |
8 / 17 page Philips Semiconductors Product specification SCN26562 Dual universal serial communications controller (DUSCC) 1995 May 1 8 AC ELECTRICAL CHARACTERISTICS (Continued) A6–A1 tADVWRL CEN tCEHCEL tCELWRL WRN tWRHCEH tWRLADI tWRLWRH tWRHWRL D0–D7 tWDVWRH tWRHWDI RDYN tWRLRYL 1 NOTES: 1. Wait on Tx. Transmitter FIFO full. 2. Timing is illustrated and referenced to the WRN and RDN inputs. The device may also be operated with CEN as the ‘strobing’ input. CEN and RDN (also CEN and WRN) are ANDed internally. As a consequence, the signal asserted last initiates the cycle and the signal negated first terminates the cycle. SD00207 Figure 5. Write Cycle SYMBOL PARAMETER LIMITS UNIT SYMBOL PARAMETER SCN26562C4 SCN26562C2 UNIT Min Max Min Max tADVWRL tCELWRL tWRLRYL tWRHCEH tWRLWRH tWDVWRH tCEHCEL tWRLADI tWRHWRL tWRHWDI Address valid to WRN low CEN low to WRN low WRN low to READY low WRN high to CEN high WRN low to WRN high Write data valid to WRN high CEN high to CEN low WRN low to address invalid WRN high to WRN low WRN high to write data invalid 10 0 0 300 100 160 150 160 10 275 10 0 0 310 100 170 150 170 10 275 ns ns ns ns ns ns ns ns ns ns |
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