ST STM32F105 series Application Note

AN2662 Bootloader description
Doc ID 14156 Rev 1 11/83
Figure 1. Bootloader selection
BL reset
Configure internal RC mode
0x7F received on
USART2
Ye s
No
0x7F received on
USART1
Ye s
No
Configure USART1
Configure USART2
Configure USART1 and USART2 pins
Configure CAN2
Configure USB
CAN2_RX pin is low
level
No
Execute
BL_USART_Loop for
USART1
Execute
BL_USART_Loop for
USART2
Ye s
Execute
BL_CAN_Loop for
CAN2
USB cable
detection
No
Ye s
Reconfigure system
clock to 48 MHz and
USB clock to 48 MHz
Execute DFU boot-
loader using USB
interrupts
HSE = 8 MHz,
14.7456 MHz or
25 MHz
Ye s
No
HSE = 8 MHz,
14.7456 MHz or
25 MHz
Ye s
No

ST STM32F105 series Specifications

General

Brand	ST
Model	STM32F105 series
Category	Microcontrollers
Language	English