UM1871 Datasheet, PDF (15/64 Pages) STMicroelectronics – Evaluation board with STM32F446ZE MCU

UM1871
Hardware layout and configuration
2.5
Boot option
The STM32446E-EVAL evaluation board is able to boot from:
• Embedded User Flash
• System memory with boot loader for ISP
• Embedded SRAM for debugging
The BOOT0 option is configured by setting SW1.
Switch
Table 4. Boot0 switch
Description
STM32446E-EVAL boots from User Flash when SW1 is configured as shown
(default setting):
SW1

 ^06Y9
STM32446E-EVAL boots from User RAM or System memory when SW1 is
configured as shown:

 ^06Y9
BOOT0 can also be configured via RS232 connector CN25.
Jumper
Table 5. Boot0 and Boot1 related jumpers
Description
PB2 is used as ULPI_D4 (Camera interface) when JP22 is set as shown on the right
(default setting):

JP22
PB2 is used as BOOT1 and set at level 1 when JP22 is set as shown on the right:

PB2 is used as BOOT1 and pulled down (level zero) when jumper is removed from
JP22 as shown on the right:
123
The Bootloader_BOOT0 is also managed by pin 6 of connector CN25 (RS232 DSR
JP5
signal) when JP5 is closed. This configuration is used for boot loader application
only. Default setting: Not fitted
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