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STM32F427NET6TR 数据表(PDF) 123 Page - STMicroelectronics |
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STM32F427NET6TR 数据表(HTML) 123 Page - STMicroelectronics |
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123 / 231 page  DocID024030 Rev 6 123/231 STM32F427xx STM32F429xx Electrical characteristics 192 Jitter(3) Cycle-to-cycle jitter System clock 120 MHz RMS - 25 - ps peak to peak - ±150 - Period Jitter RMS - 15 - peak to peak - ±200 - Main clock output (MCO) for RMII Ethernet Cycle to cycle at 50 MHz on 1000 samples -32 - Main clock output (MCO) for MII Ethernet Cycle to cycle at 25 MHz on 1000 samples -40 - Bit Time CAN jitter Cycle to cycle at 1 MHz on 1000 samples -330 - IDD(PLL)(4) PLL power consumption on VDD VCO freq = 100 MHz VCO freq = 432 MHz 0.15 0.45 - 0.40 0.75 mA IDDA(PLL)(4) PLL power consumption on VDDA VCO freq = 100 MHz VCO freq = 432 MHz 0.30 0.55 - 0.40 0.85 mA 1. Take care of using the appropriate division factor M to obtain the specified PLL input clock values. The M factor is shared between PLL and PLLI2S. 2. Guaranteed by design. 3. The use of 2 PLLs in parallel could degraded the Jitter up to +30%. 4. Guaranteed by characterization results. Table 43. Main PLL characteristics (continued) Symbol Parameter Conditions Min Typ Max Unit Table 44. PLLI2S (audio PLL) characteristics Symbol Parameter Conditions Min Typ Max Unit fPLLI2S_IN PLLI2S input clock(1) 0.95(2) 12.10 MHz fPLLI2S_OUT PLLI2S multiplier output clock - - 216 MHz fVCO_OUT PLLI2S VCO output 100 - 432 MHz tLOCK PLLI2S lock time VCO freq = 100 MHz 75 - 200 µs VCO freq = 432 MHz 100 - 300 Jitter(3) Master I2S clock jitter Cycle to cycle at 12.288 MHz on 48KHz period, N=432, R=5 RMS - 90 - peak to peak - ±280 - ps Average frequency of 12.288 MHz N = 432, R = 5 on 1000 samples -90 - ps WS I2S clock jitter Cycle to cycle at 48 KHz on 1000 samples -400 - ps |
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