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MT9079AC bảng dữ liệu(PDF) 46 Page - Mitel Networks Corporation |
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MT9079AC bảng dữ liệu(HTML) 46 Page - Mitel Networks Corporation |
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46 / 54 page ![]() MT9079 4-282 Notes: 1. High impedance is measured by pulling to the appropriate rail with RL. Timing is corrected to cancel time taken to discharge CL. 2. Outputs are compatible with both CMOS and TTL logic levels. Timing parameters are measured with respect to both CMOS (VCT=0.5VDD) and TTL (VTT=1.5V) references and the worst case value is specified. 3. DS and CS may be connected together. 4. tDAZ is measured with respect to the raising edge of DS or CS, whichever occurs first. Figure 17 - Microprocessor Timing Diagram AC Electrical Characteristics- Microprocessor Timing Characteristics Sym Min Typ Max Units Conditions/Notes 1DS low tDSL 70 ns 2DS High tDSH 50 ns 3CS Setup tCSS 0 ns See Note 3 4R/W Setup tRWS 5ns 5 Address Setup tADS 5ns 6CS Hold tCSH 0 ns See Note 3 7R/W Hold tRWH 0ns 8 Address Hold tADH 0ns 9 Data Delay Read tDDR 120 ns CL=150pF, RL=1kΩ See Note 2 10 Data Active to High Z Delay tDAZ 50 ns CL=150pF, RL=1kΩ See Notes 1, 2 & 4 11 Data Setup Write tDSW 5ns 12 Data Hold Write tDHW 25 ns DS CS R/W A0-A4 D0-D7 READ D0-D7 WRITE tCSS tRWS tADS tCSH tRWH tADH tDSW tDAZ tDDR tDHW tDSH tDSL VALID DATA VALID DATA VTT VTT VTT VTT VTT,VCT VTT |
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