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80C52 Datasheet(PDF) 44 Page - TEMIC Semiconductors |
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80C52 Datasheet(HTML) 44 Page - TEMIC Semiconductors |
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44 / 54 page ![]() 44 Rev. B - Jan. 25, 1999 Preliminary TS80C52X2 10.4.2 External Program Memory Characteristics Table 25. AC Parameters for Fix Clock Table 24. Symbol Description Symbol Parameter T Oscillator clock period TLHLL ALE pulse width TAVLL Address Valid to ALE TLLAX Address Hold After ALE TLLIV ALE to Valid Instruction In TLLPL ALE to PSEN TPLPH PSEN Pulse Width TPLIV PSEN to Valid Instruction In TPXIX Input Instruction Hold After PSEN TPXIZ Input Instruction FloatAfter PSEN TPXAV PSEN to Address Valid TAVIV Address to Valid Instruction In TPLAZ PSEN Low to Address Float Speed (see ordering) -M -V -L Units Symbol Min Max Min Max Min Max T 25 17 50 ns TLHLL 40 25 60 ns TAVLL 10 7 20 ns TLLAX 10 7 20 ns TLLIV 70 45 125 ns TLLPL 10 7 20 ns TPLPH 60 45 105 ns TPLIV 25 25 60 ns TPXIX 0 0 0 ns TPXIZ 18 12 30 ns TPXAV 18 12 30 ns TAVIV 85 53 145 ns TPLAZ 10 10 10 ns |
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