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AN3320 Datasheet(PDF) 17 Page - STMicroelectronics

Part # AN3320
Description  This application note is intended for system designers
PDF  29 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3320 Datasheet(HTML) 17 Page - STMicroelectronics

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AN3320
Boot configuration
Doc ID 18267 Rev 2
17/29
3.3
Embedded boot loader mode
The Embedded boot loader mode is used to reprogram the Flash memory using one of the
available serial USART1(PA9/PA10), USART3(PB10/11 & PC10/11), CAN2(PB5/13) or USB
OTG FS(PA11/12) in Device mode (DFU: device firmware upgrade).
The USART peripheral operates with the internal 16 MHz oscillator (HSI). The CAN and
USB OTG FS, however, can only function if an external clock (HSE) multiple of 1 MHz
(between 4 and 26 MHz)is present.
This embedded boot loader is located in the System memory and is programmed by ST
during production.
For additional information, refer to AN2606.



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