Datenblatt-Suchmaschine für elektronische Bauteile |
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TP87C54 Datenblatt(PDF) 10 Page - Intel Corporation |
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TP87C54 Datenblatt(HTML) 10 Page - Intel Corporation |
10 / 20 page AUTOMOTIVE 87C5487C54-20 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 (TA eb40 Cto a125 C VCC e 5V g 20% VSS e 0V 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 MEMORY CHARACTERISTICS 12 MHz Oscillator Variable Oscillator Symbol Parameter 87C5487C54-20 Units Min Max Min Max 1TCLCL Oscillator 35 1620 MHz Frequency TLHLL ALE Pulse Width 127 2 TCLCL b 40 ns TAVLL Address Valid to 43 TCLCL b 40 ns ALE Low TLLAX Address Hold After 53 TCLCL b 30 ns ALE Low TLLIV ALE Low to Valid 234 4 TCLCL b 100 ns Instruction In 4TCLCL b 75 TLLPL ALE Low to PSEN 53 TCLCL b 30 ns Low TPLPH PSEN Pulse Width 205 3 TCLCL b 45 ns TPLIV PSEN Low to Valid 145 3 TCLCL b 105 ns Instruction In 3TCLCL b 90 TPXIX Input Instruction 0 0 ns Hold After PSEN TPXIZ Input Instruction 59 TCLCL b 25 ns Float After PSEN TCLCL b 20 TAVIV Address Valid to 312 5 TCLCL b 105 ns Valid Instruction In TPLAZ PSEN Low to 10 10 ns Address Float 10 |
Ähnliche Teilenummer - TP87C54 |
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