AN3427 datasheet(16/52 Pages) STMICROELECTRONICS

tên linh kiện	AN3427

Giải thích chi tiết về linh kiện	Migrating a microcontroller application from STM32F1 to STM32F2 series

PDF	52 Pages

Scroll/Zoom	100%

nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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16 / 52 page

Peripheral migration

AN3427

16/52

Doc ID 019001 Rev 1

3.4

RCC

The main differences related to the RCC (Reset and Clock Controller) in the STM32 F2

series vs. STM32 F1 series are presented in the table below.

TIM3

APB1

0x40000400

APB1

0x40000400

TIM2

0x40000000

BKP registers

0x40006C00

USB device FS

0x40005C00

AFIO

APB2

0x40001000

Table 3.

IP bus mapping differences between STM32 F1 and STM32 F2 series

Peripheral

STM32 F2 series

STM32 F1 series

Bus

Base address

Bus

Base address

Color key:

= Same feature, but base address change

= Feature not available (NA)

Table 4.

RCC differences between STM32 F1 and STM32 F2 series

RCC main

features

STM32 F1 series

STM32 F2 series

Comments

HSI

8 MHz RC factory-trimmed

16 MHz RC factory-trimmed

No change to SW configuration:

– Enable/disable

RCC_CR[HSION]

– Status flag RCC_CR[HSIRDY]

LSI

40 KHz RC

32 KHz RC

No change to SW configuration:

– Enable/disable

RCC_CSR[LSION]

– Status flag

RCC_CSR[LSIRDY]

HSE

3 - 25 MHz

Depending on the product line

used

4 - 26MHz

No change to SW configuration:

– Enable/disable

RCC_CR[HSEON]

– Status flag

RCC_CR[HSERDY]

LSE

32.768 KHz

32.768 kHz

No change to SW configuration:

– Enable/disable

RCC_BDCR[LSEON]

– Status flag

RCC_BDCR[LSERDY]

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