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UPD72012 bảng dữ liệu(PDF) 27 Page - NEC |
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UPD72012 bảng dữ liệu(HTML) 27 Page - NEC |
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27 / 36 page ![]() Data Sheet S13918EJ3V0DS 27 µPD72012 (4) Device event timing Parameter Symbol Conditions MIN. TYP. MAX. Unit Time from internal power becoming effective until device pulls D+/D– above VIHZ (MIN.) (signal attach) tSIGATT 100 ms Time for USB system software to perform debounce after attach tATTDB 100 ms Time for which bus is continuously in idling state, maximum time device draws more power than suspend power t2SUSP 10 ms Maximum value of average suspend time tSUSAVGI 1s Period to drive upstream on resume tDRSMUP 115 ms Resume restore period tRSMRCY Supplied by USB system software 10 ms Time to detect reset from upstream tDETRST Same as tURLSE0 2.5 10000 µs Reset restore time tRSTRCY 10 ms Inter-packet delay tIPD 2 Bit time Inter-packet delay of device responses using detachable cable tPDRSP1 6.5 Bit time Inter-packet delay of device responses using captive cable tPDRSP2 7.5 Bit time SetAddress() completion time tDSETADDR 50 ms Time to complete standard request without data stage tDRQCMPLTND 50 ms Time to deliver first and subsequent data (excluding last) for standard request tDRETDATA1 500 ms Time to deliver last data for standard request tDRETDATAN 50 ms |
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