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80C196KC датащи(PDF) 17 Page - Intel Corporation |
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80C196KC датащи(HTML) 17 Page - Intel Corporation |
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17 / 25 page ![]() 8XC196KC8XC196KC20 EXTERNAL CLOCK DRIVE (8XC196KC20) Symbol Parameter Min Max Units 1TXLXL Oscillator Frequency 8 200 MHz TXLXL Oscillator Period 50 125 ns TXHXX High Time 17 ns TXLXX Low Time 17 ns TXLXH Rise Time 8 ns TXHXL Fall Time 8 ns EXTERNAL CLOCK DRIVE WAVEFORMS 270942 – 21 EXTERNAL CRYSTAL CONNECTIONS 270942 – 41 NOTE Keep oscillator components close to chip and use short direct traces to XTAL1 XTAL2 and VSS When using crystals C1 e C2 20 pF When using ceramic resonators consult manufacturer for recommended cir- cuitry EXTERNAL CLOCK CONNECTIONS 270942 – 42 NOTE Required if TTL driver used Not needed if CMOS driver is used AC TESTING INPUT OUTPUT WAVEFORMS 270942 – 22 AC Testing inputs are driven at 24V for a Logic ‘‘1’’ and 045V for a Logic ‘‘0’’ Timing measurements are made at 20V for a Logic ‘‘1’’ and 08V for a Logic ‘‘0’’ FLOAT WAVEFORMS 270942 – 23 For Timing Purposes a Port Pin is no Longer Floating when a 150 mV change from Load Voltage Occurs and Begins to Float when a 150 mV change from the Loaded VOH VOL Level occurs IOL IOH e g15 mA 17 |
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