Boot Pin Connection; Embedded Boot Loader Mode; Table 7. Stm32F4Xxxx Bootloader Communication Peripherals; Figure 12. Boot Mode Selection Implementation Example - ST STM32F4 Series Application Note

AN4488
4.5

Boot pin connection

Figure 12
STM32F4xxxx.
1. Resistor values are given only as a typical example.
4.6

Embedded boot loader mode

The embedded boot loader is located in the System memory and is programmed by ST
during production.
It is used to reprogram the Flash memory using one of the following serial interfaces.
The following table shows the supported communication peripherals by the system
bootloader.

Table 7. STM32F4xxxx bootloader communication peripherals

Bootloader STM32F401xB/C
peripherals STM32F401xD/E
USB OTG FS
DFU (PA11/12)
in Device mode
USART1 PA9/PA10
USART2 PD5/PD6
USART3 -
CAN -
I2C1 PB6/PB7
I2C2 PB3/PB10
I2C3 PA8/PB4
I2C FMP1 -
PA4/PA5/
SPI1
PA6/PA7
PB12/PB13/
SPI2
PB14/PB15
shows the external connection required to select the boot memory of the

Figure 12. Boot mode selection implementation example

STM32F405/415
STM32F407/417
STM32F427/437
STM32F429/439
USB OTG FS
(PA11/12)
in Device mode
PA9/PA10
-
PB10/PB11/
PC10/PC11
PB5/PB13
-
-
-
-
-
-
STM32F411xC/
STM32F410xx
STM32F411xE
USB OTG FS
- (PA11/12)
in Device mode
PA9/PA10 PA9/PA10
- PD5/PD6
- -
- -
PB6/PB7 PB6/PB7
PB3/PB10 PB3/PB10
- PA8/PB4
- -
PA4/PA5/ PA4/PA5/
PA6/PA7 PA6/PA7
PB12/PB13/ PB12/PB13/
PB14/PB15 PB14/PB15
AN4488 Rev 7
Package
STM32F412xx/
STM32F469xx/
STM32F413xx/
STM32F479xx
STM32F423xx
USB OTG FS USB OTG FS
(PA11/12) (PA11/12)
in Device mode in Device mode
PA9/PA10 PA9/PA10
PD5/PD6 -
PB10/PB11,
PB10/PB11
PC10/PC11
PB5/PB13 PB5/PB13
PB6/PB7 -
PF0/PF1 -
PA8/PB4 -
PB14/PB15 -
PA4/PA5/
-
PA6/PA7
- -
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