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BN87C51FB Datasheet(PDF) 11 Page - Intel Corporation |
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BN87C51FB Datasheet(HTML) 11 Page - Intel Corporation |
11 / 18 page ![]() AUTOMOTIVE 87C51FAFBFCFC-20 AC CHARACTERISTICS (TA eb40 Cto a125 C VCC e 5V g 20% VSS e 0V Load Capaci- tance for Port 0 ALEPROG and PSEN e 100 pF Load Capacitance for All Other Outputs e 80 pF) (Continued) ADVANCED INFORMATIONCONTACT INTEL FOR DESIGN-IN INFORMATION EXTERNAL PROGRAM MEMORY CHARACTERISTICS (Continued) Symbol Parameter 12 MHz Variable Oscillator Units Oscillator Min Max 87C51FAFBFC 87C51FC-20 Min Max TRLDV RD Low to Valid Data In 252 5TCLCL b 165 ns 5TCLCL b 95 TRHDX Data Hold After RD High 0 0 ns TRHDZ Data Float After RD High 107 2TCLCL b 60 ns TLLDV ALE Low to Valid Data In 517 8TCLCL b 150 ns 8TCLCL b 90 TAVDV Address Valid to Valid Data In 585 9TCLCL b 165 ns 9TCLCL b 90 TLLWL ALE Low to RD or WR Low 200 300 3TCLCL b 50 3TCLCL a 50 ns TAVWL Address Valid to WR Low 203 4TCLCL b 130 ns 4TCLCL b90 TQVWX Data Valid before WR Low 33 TCLCL b 50 ns TCLCL b 35 TWHQX Data Hold after WR High 33 TCLCL b 50 ns TCLCL b 40 TQVWH Data Valid to WR High 433 7TCLCL b 150 ns 7TCLCL b 70 TRLAZ RD Low to Address Float 0 0 ns TWHLH RD or WR High to ALE High 43 123 TCLCL b 40 TCLCL a 40 ns NOTE Timings specified for the 87C51FC-20 are valid at 20 MHz only For timing information below 20 MHz use the 87C51FA FBFC timings 11 |
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