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AN3156 Scheda tecnica(PDF) 24 Page - STMicroelectronics

Il numero della parte AN3156
Spiegazioni elettronici  USB DFU protocol used in the STM32 bootloader
PDF  26 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3156 Scheda tecnica(HTML) 24 Page - STMicroelectronics

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Bootloader protocol version evolution
AN3156
24/26
DocID017068 Rev 4
6
Bootloader protocol version evolution
Table 5 lists the bootloader versions.
Table 5. Bootloader protocol versions
Version
Description
V2.0
Initial bootloader version.
V2.1
DFU Bootloader version V2.1. Unlike version V2.0, this version
features an extended interface descriptor including OTP memory
interface and Device Feature interface.
V2.0 and V2.1 are implemented on different devices. Refer to
AN2606 to know which version is implemented on your device.
Fixed bug found when writing in data memory timing by using an
adequate timeout.
V2.2
Updated Option bytes, OTP and device feature descriptors to
support only Read/Write operation instead of Read/Write/Erase



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