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IO10PDB0V0 Datenblatt(PDF) 74 Page - Microsemi Corporation |
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IO10PDB0V0 Datenblatt(HTML) 74 Page - Microsemi Corporation |
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74 / 197 page ![]() SmartFusion DC and Switching Characteristics 2- 62 R e v i sio n 1 2 Main and Lower Power Crystal Oscillator The tables below describes the electrical characteristics of the main and low power crystal oscillator. Table 2-84 • Electrical Characteristics of the Main Crystal Oscillator Parameter Description Condition Min. Typ. Max. Units Operating frequency Using external crystal 0.032 20 MHz Using ceramic resonator 0.5 8 MHz Using RC Network 0.032 4 MHz Output duty cycle 50 % Output jitter With 10 MHz crystal 1 ns RMS IDYNXTAL Operating current RC 0.6 mA 0.032–0.2 0.6 mA 0.2–2.0 0.6 mA 2.0–20.0 0.6 mA ISTBXTAL Standby current of crystal oscillator 10 µA PSRRXTAL Power supply noise tolerance 0.5 Vp-p VIHXTAL Input logic level High 90% of VCC V VILXTAL Input logic level Low 10% of VCC V Startup time RC [Tested at 3.24Mhz] 300 550 µs 0.032–0.2 [Tested at 32KHz] 500 3,000 µs 0.2–2.0 [Tested at 2MHz] 8 12 µs 2.0–20.0 [Tested at 20MHz] 160 180 µs Table 2-85 • Electrical Characteristics of the Low Power Oscillator Parameter Description Condition Min. Typ. Max. Units Operating frequency 32 KHz Output duty cycle 50 % Output jitter 30 ns RMS IDYNXTAL Operating current 32 KHz 10 µA ISTBXTAL Standby current of crystal oscillator 2 µA PSRRXTAL Power supply noise tolerance 0.5 Vp-p VIHXTAL Input logic level High 90% of VCC V VILXTAL Input logic level Low 10% of VCC V Startup time Test load used: 20 pF 2.5 s Test load used: 30 pF 3.7 13 s |
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