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8XL51FA Arkusz danych(PDF) 11 Page - Intel Corporation |
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8XL51FA Arkusz danych(HTML) 11 Page - Intel Corporation |
11 / 20 page 8XL51FAFBFC EXPLANATION OF THE AC SYMBOLS Each timing symbol has 5 characters The first char- acter is always a ‘T’ (stands for time) The other characters depending on their positions stand for the name of a signal or the logical status of that signal The following is a list of all the characters and what they stand for A Address C Clock D Input Data H Logic level HIGH I Instruction (program memory contents) L Logic level LOW or ALE P PSEN Q Output Data R RD signal T Time V Valid W WR signal X No longer a valid logic level Z Float For example TAVLL e Time from Address Valid to ALE Low TLLPL e Time from ALE Low to PSEN Low AC CHARACTERISTICS (Over Operating Conditions Load Capacitance for Port 0 ALEPROG and PSEN e 100 pF Load Capacitance for All Other Outputs e 80 pF) EXTERNAL MEMORY CHARACTERISTICS All parameter values apply to all devices unless otherwise indicated In this table 8XL51FX refers to 8XL51FX and 8XL51FX-1 Symbol Parameter 12 MHz 20 MHz Variable Units Oscillator Oscillator Oscillator Min Max Min Max Min Max 1TCLCL Oscillator Frequency 8XL51FX 35 12 MHz 8XL51FX-1 35 16 MHz 8XL51FX-20 35 20 MHz TLHLL ALE Pulse Width 127 60 2 TCLCL b 40 ns TAVLL Address Valid to 43 10 TCLCL b 40 ns ALE Low TLLAX Address Hold After 53 20 TCLCL b 30 ns ALE Low TLLIV ALE Low to Valid Instruction In 8XL51FX 234 4 TCLCL b 100 ns 8XL51FX-20 125 4 TCLCL b 75 ns TLLPL ALE Low to PSEN 53 20 TCLCL b 30 ns Low TPLPH PSEN Pulse Width 205 105 3 TCLCL b 45 ns TPLIV PSEN Low to Valid Instruction In 8XL51FX 145 3 TCLCL b 105 ns 8XL51FX-20 60 3 TCLCL b 90 ns TPXIX Input Instruction 0 0 0 ns Hold After PSEN 11 |
Podobny numer części - 8XL51FA |
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Podobny opis - 8XL51FA |
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