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8S003F3P6 Datasheet(PDF) 14 Page - STMicroelectronics |
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8S003F3P6 Datasheet(HTML) 14 Page - STMicroelectronics |
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14 / 104 page  Product overview STM8S003F3 STM8S003K3 14/104 DocID018576 Rev 9 The size of the UBC is programmable through the UBC option byte (Table 13), in increments of 1 page (64-byte block) by programming the UBC option byte in ICP mode. This divides the program memory into two areas: • Main program memory: 8 Kbyte minus UBC • User-specific boot code (UBC): Configurable up to 8 Kbyte The UBC area remains write-protected during in-application programming. This means that the MASS keys do not unlock the UBC area. It protects the memory used to store the boot program, specific code libraries, reset and interrupt vectors, the reset routine and usually the IAP and communication routines. Figure 2. Flash memory organization Read-out protection (ROP) The read-out protection blocks reading and writing from/to the Flash program memory and data EEPROM memory in ICP mode (and debug mode). Once the read-out protection is activated, any attempt to toggle its status triggers a global erase of the program memory. Even if no protection can be considered as totally unbreakable, the feature provides a very high level of protection for a general purpose microcontroller. |
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