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M87C51FC-1 Datasheet(PDF) 9 Page - Intel Corporation |
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M87C51FC-1 Datasheet(HTML) 9 Page - Intel Corporation |
9 / 15 page M87C51FC AC CHARACTERISTICS (Over Specified Operating Conditions Load Capacitance for Port 0 ALEPROG and PSEN e 100 pF Load Capacitance for All Other Outputs e 80 pF) ADVANCED INFORMATIONCONTACT INTEL FOR DESIGN-IN INFORMATION EXTERNAL PROGRAM MEMORY CHARACTERISTICS Symbol Parameter 12 MHz 16 MHz Variable Units Oscillator Oscillator Oscillator Min Max Min Max Min Max 1TCLCL Oscillator Frequency 35 16 MHz TLHLL ALE Pulse Width 127 85 2TCLCLb40 ns TAVLL Address Valid to ALE Low 43 23 TCLCLb40 ns TLLAX Address Hold 53 33 TCLCLb30 ns After ALE Low TLLIV ALE Low to 234 150 4TCLCLb100 ns Valid Instruction In TLLPL ALE Low to PSEN Low 53 33 TCLCLb30 ns TPLPH PSEN Pulse Width 205 143 3TCLCLb45 ns TPLIV PSEN Low to 145 83 3TCLCLb105 ns Valid Instruction In TPXIX Input Instruction Hold 0 0 0 ns After PSEN TPXIZ Input Instruction Float 59 38 TCLCLb25 ns Float After PSEN TAVIV Address to 312 208 5TCLCLb105 ns Valid Instruction In TPLAZ PSEN Low to 10 10 10 ns Address Float TRLRH RD Pulse Width 400 275 6TCLCLb100 ns TWLWH WR Pulse Width 400 275 6TCLCLb100 ns TRLDV RD Low to Valid Data In 252 1475 5TCLCLb165 ns TRHDX Data Hold After RD 00 0 ns TRHDZ Data Float After RD 107 65 2TCLCLb60 ns TLLDV ALE Low to Valid Data In 517 350 8TCLCLb150 ns TAVDV Address to Valid Data In 585 398 9TCLCLb165 ns TLLWL ALE Low to 200 300 138 238 3TCLCLb50 3TCLCLa50 ns RD or WR Low TAVWL Address Valid to WR Low 203 120 4TCLCLb130 ns TQVWX Data Valid before WR 33 13 TCLCLb50 ns TWHQX Data Hold after WR 33 13 TCLCLb50 ns TQVWH Data Valid to WR High 433 288 7TCLCLb150 ns TRLAZ RD Low to 0 0 0 ns Address Float TWHLH RD or WR High 43 123 23 103 TCLCLb40 TCLCLa40 ns to ALE High 9 |
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