Datasheet

Functional overview STM32F410x8/B
20/142 DocID028094 Rev 5
3.13 Boot modes
At startup, boot pins are used to select one out of three boot options:
• Boot from user Flash
• Boot from system memory
• Boot from embedded SRAM
The bootloader is located in system memory. It is used to reprogram the Flash memory by
using the interfaces described in Table 3.
Refer to Table 9: STM32F410x8/B pin definitions) for the GPIOs available on the selected
package.
For more detailed information on the bootloader, refer to Application Note: AN2606,
STM32™ microcontroller system memory boot mode.
3.14 Power supply schemes
• V
DD
= 1.7 to 3.6 V: external power supply for I/Os with the internal supervisor
(POR/PDR) disabled, provided externally through V
DD
pins. Requires the use of an
external power supply supervisor connected to the VDD and PDR_ON pins.
• V
SSA
, V
DDA
= 1.7 to 3.6 V: external analog power supplies for ADC, Reset blocks, RCs
and PLL. V
DDA
and V
SSA
must be connected to V
DD
and V
SS
, respectively, with
decoupling technique.
• V
BAT
= 1.65 to 3.6 V: power supply for RTC, external clock 32 kHz oscillator and
backup registers (through power switch) when V
DD
is not present.
Table 3. Embedded bootloader interfaces
Package USART1 USART2 I2C1 I2C2 I2C4 FM+ SPI1 SPI3
WLCSP36 X
PA2/PA3 PB6/PB7
X PB10/PB3
PA15/PA5
/PB4/PB5
X
UFQFPN48
PA9/PA10
X
PB14/PB15
PA4/PA5/
PA6/PA7
X
LQFP64 PB10/PB11
PB12/PB13
/PC2/PC3
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