STM32F303VC datasheet(18/133 Pages) STMICROELECTRONICS

Nome de Peças	STM32F303VC

Descrição Electrónicos	ARM Cortex-M4F 32b MCUFPU, up to 256KB Flash48KB SRAM

PDF	133 Pages

Scroll/Zoom	100%

Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

Página de início	http://www.st.com

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18 / 133 page

Functional overview

STM32F302xx/STM32F303xx

18/133

Doc ID 023353 Rev 5

Figure 3.

Clock tree

/32

4-32 MHz

HSE OSC

OSC_IN

OSC_OUT

OSC32_IN

OSC32_OUT

8 MHz

HSI RC

IWDGCLK

to IWDG

PLL

x2,x3,..

x16

PLLMUL

MCO

Main clock

output

AHB

PLLCLK

HSI

HSE

APB1

prescaler

/1,2,4,8,16

HCLK

PLLCLK

to AHB bus, core,

memory and DMA

LSE

LSI

HSI

HSE

to RTC

PLLSRC

MCO

SYSCLK

RTCCLK

RTCSEL[1:0]

SYSCLK

to TIM 2,3,4,6,7

If (APB1 prescaler

=1) x1 else x2

FLITFCLK

to Flash programming interface

LSI

to I2Cx (x = 1,2)

to U(S)ARTx (x = 2..5)

LSE

HSI

SYSCLK

PCLK1

SYSCLK

HSI

PCLK1

MS19989V4

to I2Sx (x = 2,3)

USBCLK

to USB interface

to cortex System timer

FHCLK Cortex free

running clock

to APB1 peripherals

AHB

prescaler

/1,2,..512

CSS

/2,/3,...

/16

LSE OSC

32.768kHz

LSI RC

40kHz

USB

prescaler

/1,1.5

APB2

prescaler

/1,2,4,8,16

to TIM 15,16,17

If (APB2 prescaler

=1) x1 else x2

to USART1

LSE

HSI

SYSCLK

PCLK2

to APB2 peripherals

TIM1/8

ADC

Prescaler

/1,2,4

to ADCxy

(xy = 12, 34)

ADC

Prescaler

/1,2,4,6,8,10,12,16,

32,64,128,256

I2SSRC

SYSCLK

Ext. clock

I2S_CKIN

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