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M68AW127B 数据表(PDF) 13 Page - STMicroelectronics |
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M68AW127B 数据表(HTML) 13 Page - STMicroelectronics |
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13 / 20 page ![]() 13/20 M68AW127B Table 8. Write Mode AC Characteristics Note: 1. At any given temperature and voltage condition, tWLQZ is less than tWHQX for any given device. 2. These parameters are defined as the time at which the outputs achieve the open circuit conditions and are not referenced to output voltage levels. Symbol Parameter M68AW127B Unit 70 100 tAVAV Write Cycle Time Min 70 100 ns tAVEH Address Valid to Chip Enable High Min 60 80 ns tAVEL Address valid to Chip Enable Low Min 0 0 ns tAVWH Address Valid to Write Enable High Min 60 80 ns tAVWL Address Valid to Write Enable Low Min 0 0 ns tDVEH Input Valid to Chip Enable High Min 30 40 ns tDVWH Input Valid to Write Enable High Min 30 40 ns tEHAX Chip Enable High to Address Transition Min 0 0 ns tEHDX Chip enable High to Input Transition Min 0 0 ns tELEH Chip Enable Low to Chip Enable High Min 60 80 ns tELWH Chip Enable Low to Write Enable High Min 60 80 ns tWHAX Write Enable High to Address Transition Min 0 0 ns tWHDX Write Enable High to Input Transition Min 0 0 ns tWHQX (1) Write Enable High to Output Transition Min 5 5 ns tWLEH Write Enable Low to Chip Enable High Min 60 70 ns tWLQZ (1,2) Write Enable Low to Output Hi-Z Max 20 30 ns tWLWH Write Enable Low to Write Enable High Min 60 70 ns |
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