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CC2430-RTR1-F128 数据表(PDF) 16 Page - Texas Instruments |
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CC2430-RTR1-F128 数据表(HTML) 16 Page - Texas Instruments |
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16 / 234 page  CC2430 CC2430 PRELIMINARY Data Sheet (rev. 1.03) SWRS036A Page 16 of 232 7.4 32 MHz Crystal Oscillator TA=25°C, VDD=3.0V if nothing else is stated. Parameter Min Typ Max Unit Condition/Note Crystal frequency 32 MHz Crystal frequency accuracy requirement - 40 40 ppm Including aging and temperature dependency, as specified by [1] ESR 6 16 60 Ω C0 1 1.9 7 pF CL 10 13 16 pF Start-up time 140 µs Table 8: 32 MHz Crystal Oscillator Parameters 7.5 32.768 kHz Crystal Oscillator TA=25°C, VDD=3.0V if nothing else is stated. Parameter Min Typ Max Unit Condition/Note Crystal frequency 32.768 kHz Crystal frequency accuracy requirement –40 40 ppm Including aging and temperature dependency, as specified by [1] ESR 40 130 k Ω C0 0.9 2.0 pF CL 12 16 pF Start-up time 450 ms Table 9: 32.768 kHz Crystal Oscillator Parameters 7.6 Low Power RC Oscillator TA=25°C, VDD=3.0V if nothing else is stated. Parameter Min Typ Max Unit Condition/Note Calibrated frequency 32.768 kHz Calibrated Low Power RC Oscillator frequency is XTAL frequency multiplied by 16/15625 Frequency accuracy after calibration ±0.2 % Temperature coefficient +0.4 % / °C Frequency drift when temperature changes after calibration Supply voltage coefficient +3 % / V Frequency drift when supply voltage changes after calibration Initial calibration time 4 ms When the Low Power RC Oscillator is enabled, calibration is continuously done in the background as long as the crystal oscillator is running. Table 10: Low Power RC Oscillator parameters |
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