Page 86 - ARM Based Microcontroller Projects Using MBED

72 6. ARCHITECTURE OF THE STM32F411RET6 MICROCONTROLLER

to I2Cx x=1,2,3 to LPTIMx x=1,2 to SWPMI to APB2 peripherals to TIMx x=1,8,15,16,17 to USART1 to ADC to SAI1 to SAI2

PCLK2 x1 or x2 48 MHz clock to USB, RNG, SDMMC

SYSCLK SYSCLK
HSI LSI LSE HSI HSI APB2 PRESC / 1,2,4,8,16 LSE HSI

SYSCLK

MSI

HSE

HSI
MSI

/ M

circuit. clock

MSI RC 100 kHz–48 MHz PLLSAI3CLK / P PLLUSB1CLK / Q PLLCLK / R PLLSAI1CLK / P PLLUSB2CLK / Q PLLADC1CLK / R PLLSAI2CLK / P / Q PLLADC2CLK / R STM32L433RCT6P

PLL PLLSAI1 PLLSAI2 SAI1_EXTCLK SAI2_EXTCLK 6.6

FIG.