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AN3427 датащи(PDF) 13 Page - STMicroelectronics

номер детали AN3427
подробное описание детали  Migrating a microcontroller application from STM32F1 to STM32F2 series
PDF  52 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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AN3427
Peripheral migration
Doc ID 019001 Rev 1
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3.2.3
Dual SRAM
The 128KB of SRAM is made of 2 blocks; one 112KB and one 16KB. Both can be accessed
simultaneously by 2 masters in 0 WS (CPU, DMAs, Ethernet, USB HS).
The 16KB SRAM can be used as a buffer for high speed peripherals like USB-HS, Ethernet,
Camera, without impacting the CPU performance.
3.3
Memory mapping
The peripheral address mapping has been changed in the F2 series vs. F1 series, the main
change concerns the GPIOs which have been moved to the AHB bus instead of the APB
bus to allow them to operate at maximum speed.
The tables below provide the peripheral address mapping correspondence between F2 and
F1 series.
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
FSMC Registers
AHB3
0xA0000000
AHB
0xA0000000
RNG
AHB2
0x50060800
NA
NA
HASH
0x50060400
NA
NA
CRYP
0x50060000
NA
NA
DCMI
0x50050000
NA
NA
USB OTG FS
0x50000000
AHB
0x50000000



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