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AN4660 Datasheet(PDF) 6 Page - STMicroelectronics

Part # AN4660
Description  Designers of STM32 microcontroller applications must have the possibility
PDF  27 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4660 Datasheet(HTML) 6 Page - STMicroelectronics

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Hardware migration
AN4660
6/27
DocID027558 Rev 2
1.2
Boot mode compatibility
The STM32F42xxx/F43xxx boot space is based on boot mode selection pins: BOOT0 and
BOOT1 while STM32F74xxx/F75xxx is based on BOOT0 and boot address option bytes as
described in Table 3.
For STM32F74xxx/F75xxx, the boot base address supports any address in the range from
0x0000 0000 to 0x2004 FFFF.
Table 3. Boot mode selection comparison between STM32F42xxx/F43xxx and
STM32F74xxx/F75xxx
STM32F74xxx/F75xxx
Boot mode selection
Boot space
BOOT
Boot address
Option Bytes
0
BOOT_ADD0
[15:0]
Boot address defined by user option byte BOOT_ADD0[15:0]
- ST programmed value: Flash on ITCM at 0x0020 0000
1
BOOT_ADD1
[15:0]
Boot address defined by user option byte BOOT_ADD1[15:0]
- ST programmed value: system bootloader at 0x0010 0000
STM32F42xxx/F43xxx
Boot mode
selection Pins
Boot Mode
Aliasing
BOOT1 BOOT0
x0
Main Flash
memory
Main Flash memory is selected as the boot space at 0x0800 0000
01
System
memory
System memory is selected as the boot space at 0x1FFF 0000



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