ST STM32F105 series Application Note

USART bootloader AN2662
34/83 Doc ID 14156 Rev 1
Figure 19. Write Unprotect command: host side
1. WPUN = Write Unprotect.
Figure 20. Write Unprotect command: device side
1. WPUN = Write Unprotect.
Wait for ACK
or NACK
Wait for ACK
or NACK
End of WPUN
(1)
NACK
ACK
ai14647
Send 0x73+0x8C
Start WPUN
(1)
NACK
ACK
ROP active
Remove the protection for the
entire Flash memory
No
Ye s
ai14648b
Start WPUN
(1)
Received bytes =
0x73+0x8C?
Send ACK byte
Send NACK byte
End of WPUN
(1)
No
Ye s
Send ACK byte
Generate system reset

ST STM32F105 series Specifications

General

Brand	ST
Model	STM32F105 series
Category	Microcontrollers
Language	English