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ATWILC3000 データシート(PDF) 12 Page - ATMEL Corporation |
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ATWILC3000 データシート(HTML) 12 Page - ATMEL Corporation |
12 / 40 page ATWILC3000 Single Chip IEEE 802.11 b/g/n Link Controller with Integrated Bluetooth 4.0 [DATASHEET] Atmel-42390D-ATWILC3000-MUT-SmartConnect-Datasheet_05/2016 1 2 12 5 Clocking 5.1 Crystal Oscillator Table 5-1. Crystal Oscillator Parameters Parameter Min. Typ. Max. Unit Crystal Resonant Frequency 14 26 40 MHz Crystal Equivalent Series Resistance 50 150 Ω Stability – Initial Offset (1) -100 100 ppm Stability - Temperature and Aging -20 20 Initial offset must be calibrated to maintain ±20ppm in all operating conditions when including temperature and aging. This calibration is performed during final production testing. The block diagram in Figure 5-1(a) shows how the internal Crystal Oscillator (XO) is connected to the external crystal. The XO has 5pF internal capacitance on each terminal XO_P and XO_N. To bypass the crystal oscillator with an external reference, an external signal capable of driving 5pF can be applied to the XO_N terminal as shown in Figure 5-1(b). Figure 5-1. XO Connections ATWILC3000 XO_N XO_P (a) ATWILC3000 XO_N XO_P (b) External Clock (a) Crystal Oscillator is used (b) Crystal Oscillator is bypassed Below are the electrical and performance requirements for the external clock. Table 5-2. Bypass Clock Specification Parameter Min. Max. Unit Comments Oscillation frequency 12 40 MHz Must be able to drive 5pF load @ desired frequency Voltage swing 0.5 1.2 Vpp Must be AC coupled Stability – Temperature and Aging -20 +20 ppm Phase Noise -130 dBc/Hz At 10kHz offset Jitter(RMS) <1psec Based on integrated phase noise spectrum from 1kHz to 1MHz |
同様の部品番号 - ATWILC3000 |
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同様の説明 - ATWILC3000 |
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