STM32F303XD datasheet(20/173 Pages) STMICROELECTRONICS

20 / 173 page

Functional overview

STM32F303xD STM32F303xE

20/173

DocID026415 Rev 5

Note:

For more details about the interconnect actions, refer to the corresponding sections in the

STM32F303xD/Ereference manual (RM0316).

3.9

Clocks and startup

System clock selection is performed on startup, however the internal RC 8 MHz oscillator is

selected as default CPU clock on reset. An external 4-32 MHz clock can be selected, in

which case it is monitored for failure. If failure is detected, the system automatically switches

back to the internal RC oscillator. A software interrupt is generated if enabled. Similarly, full

interrupt management of the PLL clock entry is available when necessary (for example with

failure of an indirectly used external oscillator).

Several prescalers allow to configure the AHB frequency, the high speed APB (APB2) and

the low speed APB (APB1) domains. The maximum frequency of the AHB and the high

speed APB domains is 72 MHz, while the maximum allowed frequency of the low speed

APB domain is 36 MHz.

GPIO

RTCCLK

HSE/32

MC0

TIM16

Clock source used as input channel for HSI and

LSI calibration

CSS

CPU (hard fault)

COMPx

GPIO

TIM1, TIM8, TIM20

TIM15, 16, 17

Timer break

GPIO

TIMx

External trigger, timer break

ADCx

DAC1

Conversion external trigger

DAC1

COMPx

Comparator inverting input

Table 4. STM32F303xD/E peripheral interconnect matrix (continued)

Interconnect source

Interconnect

destination

Interconnect action

STM32F303XD 数据表(PDF) 20 Page - STMicroelectronics

STM32F303XD 数据表(HTML) 20 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载

链接网址

STM32F303XD 数据表(PDF) 20 Page - STMicroelectronics

STM32F303XD 数据表(HTML) 20 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表 下载

链接网址

数据表下载