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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ATAR080 датащи(PDF) 57 Page - ATMEL Corporation |
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ATAR080 датащи(HTML) 57 Page - ATMEL Corporation |
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57 / 68 page  57 ATAR080 4675D–4BMCU–12/04 Figure 58. Crystal and Equivalent Circuit RC Oscillator 1 Frequency f RcOut1 3.8 MHz Stability V DD = 2.0 V to 6.5 V T amb = -40°C to 85° C ∆f/f ±50 % RC Oscillator 2 – External Resistor Frequency R ext = 47 kΩ f RcOut2 1.6 MHz Stability V DD = 2.0 V to 6.5 V T amb = -40°C to 85° C ∆f/f ±15 % Stabilization time t S 1ms External resistor R ext 12 47 100 k Ω 32-kHz Crystal Oscillator (Operating Range 2.0 V to 6.5 V) Frequency f X 32.768 kHz Start-up time t SQ 0.5 s Stability ∆f/f -10 10 ppm 4-MHz Crystal Oscillator (Operating Range 2.2 V to 6.5 V) Frequency f X 4MHz Start-up time t SQ 5ms Stability ∆f/f -10 10 ppm External 32-kHz Crystal Parameters Crystal frequency f X 32.768 kHz Serial resistance RS 30 50 k Ω Static capacitance C0 1.5 pF Dynamic capacitance C1 3 fF External 4-MHz Crystal Parameters Crystal frequency fX 4.0 MHz Serial resistance RS 40 150 Ω Static capacitance C0 1.4 3 pF Dynamic capacitance C1 3 fF External 4-MHz Ceramic Parameters Frequency fC 4.0 MHz Serial resistance RS 8 20 Ω Static capacitance C0 36 45 pF Dynamic capacitance C1 4.4 pF Electrical Characteristics – AC Operating (Continued) Supply voltage V DD = 1.8 V to 6.5 V, VSS = 0 V, Tamb = 25°C unless otherwise specified Parameters Test Conditions Symbol Min. Typ. Max. Unit L C1 RS C0 OSCIN OSCOUT Equivalent circuit SCLIN SCLOUT |
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