AN4228 datasheet(13/90 Pages) STMICROELECTRONICS

部件名	AN4228

功能描述	Migrating from STM32F1 to STM32F3 microcontrollers

PDF	90 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

13 / 90 page

DocID024110 Rev 5

13/90

AN4228

Peripheral migration

3.2

System architecture

The main system consists of:



Five masters:

–

Cortex-M4 core I-bus

–

Cortex-M4 core D-bus

–

Cortex-M4 core S-bus

–

GP-DMA1 and GP-DMA2 (general-purpose DMAs)



Seven or six slaves in STM32F30xx microcontrollers depending on the CCM RAM and

FMC availability in the product:

–

Internal Flash memory on the DCode and ICode

–

CCM SRAM on STM32F303xB/C/D/E and STM32F303x6/x8

–

Internal SRAM

–

AHB to APBx (APB1 or APB2), which connect all the APB peripherals

–

AHB dedicated to GPIO ports

–

ADCs

–FMC



Five slaves in STM32F37xx microcontrollers:

–

Internal Flash memory on the DCode

–

Internal Flash memory on the ICode

–

2 Kbyte internal SRAM memory

–

AHB to APBx (APB1 or APB2) connecting all the APB peripherals

–

AHB dedicated to GPIO ports.

These are interconnected using a multilayer AHB bus architecture as shown in Figure 1 and

Figure 2.

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