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STM8AF/P6346 数据表(PDF) 16 Page - STMicroelectronics

部件名 STM8AF/P6346
功能描述  Automotive 8-bit MCU, with up to 32-Kbyte Flash memory, data EEPROM, 10-bit ADC, timers, LIN, SPI, I2C, 3 to 5.5 V
PDF  95 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STM8AF/P6346 数据表(HTML) 16 Page - STMicroelectronics

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Product overview
STM8AF6366
16/95
DS12343 Rev 2
5.4.2
Write protection (WP)
Write protection in application mode is intended to avoid unintentional overwriting of the
memory. The write protection can be removed temporarily by executing a specific sequence
in the user software.
5.4.3
Protection of user boot code (UBC)
If the user chooses to update the Flash program memory using a specific boot code to
perform in application programming (IAP), this boot code needs to be protected against
unwanted modification.
In the STM8A a memory area of up to 32 Kbyte can be protected from overwriting at user
option level. Other than the standard write protection, the UBC protection can exclusively be
modified via the debug interface, the user software cannot modify the UBC protection
status.
The UBC memory area contains the reset and interrupt vectors and its size can be adjusted
in increments of 512 bytes by programming the UBC and NUBC option bytes
(see Section 9: Option bytes on page 44).
Figure 2. Flash memory organization of STM8AF6366
MS37794V1
UBC area
Flash program memory area
Data memory area ( 1 Kbyte)
Remains write protected during IAP
Data
EEPROM
memory
Write access possible for IAP
Option bytes
Programmable
area maximum
32 Kbyte
Flash program
memory



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