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FS32R274VCK2MMM Datasheet(PDF) 26 Page - NXP Semiconductors |
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FS32R274VCK2MMM Datasheet(HTML) 26 Page - NXP Semiconductors |
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26 / 78 page ![]() Peripheral operating requirements and behaviours Clocks and PLL Specifications 6.1.1 40 MHz Oscillator (XOSC) electrical characteristics The device provides an oscillator/resonator driver. NOTE XTAL/EXTAL must not be directly used to drive external circuits. Table 19. XOSC electrical characteristics Symbol Parameter Conditions Min Typ Max Unit XOSCfout Oscillator frequency 40 MHz tstab Oscillator start-up time 2 ms tjitcc Cycle to cycle jitter (peak – peak) 2.51 ps Output Duty Cycle 45 50 55 % Cin Input Capacitance 2 Extal and Xtal each 3.0 4.0 5.0 pF RinLVDS LVDS bypass mode input termination3 Between Extal and Xtal 75 100 125 ohm VCMLVDS LVDS Common Mode Voltage Vdda/2 0.60 0.70 0.80 V 1. The number is 3.5 ps when SD-ADC and/or DAC is not used in the device. 2. When using a 40 MHz crystal, the recommended load capacitance is 8 pF. Need quiet ground connection on the board and external crystal/load capacitor placement as close to the Extal and Xtal pins as possible to allow good jitter performance. 3. The termination resistance is only active when the AFE is powered (VDD_HV_RAW, VDD_HV_DAC and the AFE regulators are powered up) and the XOSC is powered down (default case once device is out of reset) or the XOSC is configured in differential bypass mode. 6.1.2 FMPLL electrical characteristics 6 6.1 Peripheral operating requirements and behaviours S32R274/S32R264 Series Data Sheet, Rev. 6, 06/2021 26 NXP Semiconductors |
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