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AN2606 Datasheet(PDF) 119 Page - STMicroelectronics |
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AN2606 Datasheet(HTML) 119 Page - STMicroelectronics |
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119 / 155 page  DocID13801 Rev 21 119/155 AN2606 STM32L1xxx6(8/B)A devices bootloader 154 27.2 Bootloader selection The figure below shows the bootloader selection mechanism. Figure 34. Bootloader selection for STM32L1xxx6(8/B)A devices 27.3 Bootloader version The following table lists the STM32L1xxx6(8/B)A devices bootloader versions: Table 59. STM32L1xxx6(8/B)A bootloader versions Bootloader version number Description Known limitations V2.0 Initial bootloader version When a Read Memory command or Write Memory command is issued with an unsupported memory address and a correct address checksum (ie. address 0x6000 0000), the command is aborted by the bootloader device, but the NACK (0x1F) is not sent to the host. As a result, the next 2 bytes (which are the number of bytes to be read/written and its checksum) are considered as a new command and its checksum.(1) 1. If the “number of data - 1” (N-1) to be read/written is not equal to a valid command code, then the limitation is not perceived from the host since the command is NACKed anyway (as an unsupported new command). |
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