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STM32L433CB 数据表(PDF) 36 Page - STMicroelectronics |
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STM32L433CB 数据表(HTML) 36 Page - STMicroelectronics |
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36 / 225 page  Functional overview STM32L433xx 36/225 DS11449 Rev 5 Figure 4. Clock tree MSv36868V3 SYSCLK MCO LSCO PLL 48 MHz clock to USB, RNG, SDMMC to IWDG to RTC and LCD to PWR HCLK to AHB bus, core, memory and DMA FCLK Cortex free running clock to Cortex system timer to APB1 peripherals to APB2 peripherals PCLK1 PCLK2 LSE HSI16 SYSCLK to USARTx x=2..3 to LPUART1 to I2Cx x=1,2,3 to LPTIMx x=1,2 SAI1_EXTCLK to SWPMI to TIMx x=2,6,7 OSC32_OUT OSC32_IN MSI HSI16 HSE MSI LSI LSE HSE SYSCLK HSE MSI HSI16 LSE OSC 32.768 kHz /32 AHB PRESC / 1,2,..512 / 8 APB1 PRESC / 1,2,4,8,16 x1 or x2 HSI16 SYSCLK LSI LSE HSI16 HSI16 APB2 PRESC / 1,2,4,8,16 to TIMx x=1,15,16 x1 or x2 to USART1 LSE HSI16 SYSCLK PLLSAI1 / M MSI RC 100 kHz – 48 MHz HSI RC 16 MHz HSE OSC 4-48 MHz Clock detector OSC_OUT OSC_IN / 1→16 LSI RC 32 kHz Clock source control PLLSAI1CLK PLL48M1CLK PLLCLK PLLSAI2CLK PLL48M2CLK PLLADC1CLK HSI48 VCO FVCO / P / R / Q / P / Q / R VCO FVCO HSI16 PLLCLK to ADC to SAI1 MSI SYSCLK HSI16 HSI16 HSI RC 48 MHz CRS |
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