STM32L552CEU6PTR datasheet(52/340 Pages) STMICROELECTRONICS

部件名	STM32L552CEU6PTR

功能描述	Ultra-low-power Arm® Cortex®-M33 32-bit MCUTrustZone®FPU, 165 DMIPS, up to 512 KB Flash memory, 256 KB SRAM, SMPS

PDF	340 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

52 / 340 page

Functional overview

STM32L552xx

52/340

DS12737 Rev 6

Figure 7. STM32L552xx clock tree

MSv49302V2

SYSCLK

MCO

LSCO

PLL

SAI2_EXTCLK

48 MHz clock to USB, RNG

to ADC

to IWDG

to RTC

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

to SAI1

to SAI2

LSE

HSI16

SYSCLK

to USARTx

X=2..5

to LPUART1

to I2Cx

x=1,2,3,4

to LPTIMx

x=1,2

SAI1_EXTCLK

to TIMx

x=2..7

OSC32_OUT

OSC32_IN

MSI

HSI16

HSE

MSI

HSI16

MSI

SYSCLK

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

APB2 PRESC

/ 1,2,4,8,16

to TIMx

x=1,8,15,16,17

x1 or x2

USART1

LSE

HSI16

SYSCLK

/ P

/ Q

/ R

PLLSAI1

/ P

/ Q

/ R

/ 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

PLLSAI3CLK

PLL48M1CLK

PLLCLK

PLLSAI1CLK

PLL48M2CLK

PLLADC1CLK

PLLSAI2CLK

HSI16

PLLSAI2

/ P

/ Q

/ R

HSI16

LSI

LSE

HSE

SYSCLK

PLLCLK

HSI48

MSI

OCTOSPI clock

MSI

HSI16

DFSDM

audio clock

SDMMC clock

/ M

RC 48 MHz

CRS clock

FDCAN

HSE

MSI

HSI16

HSE

MSI

HSI16

HSE

To UCPD1

HSI16

MHz

STM32L552CEU6PTR 数据表(PDF) 52 Page - STMicroelectronics

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