STM32F303VB Просмотр технического описания (PDF) - STMicroelectronics

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производитель

STM32F303VB

ARM Cortex-M4F 32b MCU+FPU, up to 256KB Flash+48KB SRAM 4 ADCs, 2 DAC ch., 7 comp, 4 PGA, timers, 2.0-3.6 V operation

STMicroelectronics 

Functional overview

Figure 3. Clock tree

STM32F302xx/STM32F303xx

HSI

SYSCLK

FLITFCLK

to Flash programming interface

to I2Cx (x = 1,2)

I2S_CKIN

I2SSRC

SYSCLK

Ext. clock

to I2Sx (x = 2,3)

OSC_OUT

OSC_IN

OSC32_IN

OSC32_OUT

MCO

8 MHz HSI

HSI RC

/2

PLLSRC

PLLMUL

SW

HSI

PLL PLLCLK

x2,x3,..

x16

HSE

/2,/3,...

/16

CSS

AHABHB

prescaler

/1,2,..512

SYSCLK

4-32 MHz

HSE OSC

/32

LSE OSC

32.768kHz LSE

RTCCLK to RTC

RTCSEL[1:0]

LSI RC

LSI

40kHz

IWDGCLK

to IWDG

Main clock /2

output

MCO

PLLCLK

HSI

LSI

HSE

SYSCLK

USB

prescaler

/1,1.5

USBCLK

to USB interface

HCLK

/8

APB1

prescaler

/1,2,4,8,16

PCLK1

to AHB bus, core,

memory and DMA

to cortex System timer

FHCLK Cortex free

running clock

to APB1 peripherals

If (APB1 prescaler

=1) x1 else x2

to TIM 2,3,4,6,7

PCLK1

SYSCLK

HSI

LSE

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

APB2

prescaler

/1,2,4,8,16

PCLK2

to APB2 peripherals

If (APB2 prescaler

=1) x1 else x2

PCLK2

SYSCLK

HSI

LSE

to TIM 15,16,17

to USART1

x2

TIM1/8

ADC

Prescaler

/1,2,4

ADC

Prescaler

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

32,64,128,256

to ADCxy

(xy = 12, 34)

MS19989V4

18/133

Doc ID 023353 Rev 5

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