RM0312 datasheet(35/275 Pages) STMICROELECTRONICS

Il numero della parte	RM0312

Spiegazioni elettronici	STM8TL5xxx microcontroller family

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

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RM0312

Flash program memory and data EEPROM

5. The data memory is write protected (locked) until the correct MASS key is written in the FLASH_DUKR. It is possible to

lock the memory again by resetting the DUL bit in the FLASH_IAPSR register. If incorrect keys are provided, another key

program sequence can be performed without resetting the device.

6. The PCODE area can be read and executed only in privileged mode through TRAP vectors. The PCODE cannot be

directly accessed through the SWIM.

7. To program the UBC area the application must first clear the UBC option byte.

8. The option bytes are write protected (locked) until the correct MASS key is written in the FLASH_DUKR (with OPT set to

‘1’). It is possible to lock the memory again by resetting the DUL bit in the FLASH_IAPSR register. If incorrect keys are

provided, another key program sequence can be performed without resetting the device.

9. When ROP is removed, the whole memory is erased, including option bytes.

RM0312 Scheda tecnica(PDF) 35 Page - STMicroelectronics