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AN3155 Datasheet(PDF) 23 Page - STMicroelectronics

Part # AN3155
Description  USART protocol used in the STM32 bootloader
PDF  37 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3155 Datasheet(HTML) 23 Page - STMicroelectronics

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DocID17066 Rev 6
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AN3155
Bootloader command set
Figure 15. Erase Memory command: device side
1. ER = Erase Memory.
Note:
After sending the erase memory command and its checksum, if the host sends 0xFF
followed by data different from 0x00, the mass erase is not performed but an ACK is send
by the device.
The host sends bytes to the STM32 as follows:
Byte 1: 0x43
Byte 2: 0xBC
Wait for ACK
Byte 3: 0xFF or number of pages to be erased – 1 (0
≤ N ≤ maximum number of pages)



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