ST STM32F105 series Application Note

CAN bootloader AN2662
62/83 Doc ID 14156 Rev 1
Figure 47. Write Unprotect command: device side
1. WPUN = Write Unprotect.
The STM32F105xx and STM32F107xx sends the messages as follows:
ACK message: Std ID = 0x73, DLC = 1, data[0] = ACK if the content of the command is
correct and ROP is not active else data[0] = NACK.
3.14 Readout Protect command
The Readout Protect command is used to enable the Flash memory read protection. When
the bootloader receives the Readout Protect command, it transmits the ACK message to the
host if ROP is disabled else it transmits NACK. After the transmission of the ACK message,
the bootloader enables the read protection for the Flash memory.
At the end of the Readout Protect command, the bootloader transmits the ACK message
and generates a system Reset to take into account the new configuration of the option byte.
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ENTIRE&LASHMEMORY
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3TART705.
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2ECEIVED
3END!#+BYTE
3END.!#+BYTE
%NDOF705.

3END!#+BYTE
'ENERATESYSTEMRESET
MESSAGEWITH
)$H
2/0INACTIVE
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ST STM32F105 series Specifications

General

Brand	ST
Model	STM32F105 series
Category	Microcontrollers
Language	English