AN3422 datasheet(17/52 Pages) STMICROELECTRONICS

tên linh kiện	AN3422

Giải thích chi tiết về linh kiện	Migration of microcontroller applications from STM32F1 to STM32L1 series

PDF	52 Pages

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nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

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17 / 52 page

AN3422

Peripheral migration

Doc ID 018976 Rev 2

17/52

4.4

RCC

The main differences related to the RCC (Reset and Clock Controller) in the STM32L1

series vs. STM32F1 series are presented in the table below.

CAN2

APB1

0x40006800

CAN1

0x40006400

TIM14

0x40002000

TIM13

0x40001C00

TIM12

0x40001800

TIM5

0x40000C00

BKP registers

0x40006C00

AFIO

APB2

0x40010000

Table 4.

IP bus mapping differences between STM32F1 and STM32L1 series

Peripheral

STM32L1 series

STM32F1 series

Bus

Base address

Bus

Base address

Color key:

= Same feature, but base address change

= Feature not available (NA)

Table 5.

RCC differences between STM32F1 and STM32L1 series

RCC main

features

STM32F1 series

STM32L1 series

Comments

MSI

Multi Speed RC factory-

trimmed (64 kHz /128 kHz /

256 kHz / 512 kHz / 1.02

MHz / 2.05 MHz / 4.1 MHz)

– Enable/disable

RCC_CR[MSION]

– Status flag RCC_CR[MSIRDY]

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

37 KHz RC

No change to SW configuration:

– Enable/disable

RCC_CSR[LSION]

– Status flag

RCC_CSR[LSIRDY]

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