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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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AM79C975VCW Datenblatt(PDF) 231 Page - Advanced Micro Devices |
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AM79C975VCW Datenblatt(HTML) 231 Page - Advanced Micro Devices |
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231 / 304 page  Am79C973/Am79C975 231 P R E L I M INARY EXTERNAL CLOCK Figure 52 External Clock Timing Table 64. Clock (XTAL1, XCLK = 1) Switching Characteristics Table 65. Crystal (XTAL1, XTAL2, XCLK = 0) Requirements Table 66. Crystal (XTAL1, XTAL2, XCLK = 0) Requirements Parameter Symbol Parameter Name Test Condition Min Nom Max Unit FXTAL1 XTAL1 Frequency - 25 - MHz tPER XTAL1 Period @ 0.4 VDD (3.3V) - 40 - ns tPWH XTAL1 High Time @ 0.4 VDD (3.3V) 18 22 - ns tPWL XTAL1 Low Time @ 0.3 VDD (3.3V) 18 22 - ns tRISE XTAL1 Rise Time over 0.4 VDD (3.3V) 1 4 V/ns tFALL XTAL1 Fall Time over 0.4 VDD (3.3V) 1 4 V/ns Item Test Condition Min Nom Max Unit Frequency -25 - MHz Drive Level -- - mW Load Capacitance - 18 - pF Frequency Stability - - 50 to 100 ppm ESR - - 50 ohms Component Manufacturer Part Number Crystal Epson America MA-505-25.000M Crystal Ecliptek EC-AT-25.000M Crystal Ecliptek ECSM-AT-25.000M |
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