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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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STM8AF6268ITCU Fiches technique(PDF) 48 Page - STMicroelectronics |
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STM8AF6268ITCU Fiches technique(HTML) 48 Page - STMicroelectronics |
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48 / 99 page  Option bytes STM8AF6246/48/66/68 48/99 DocID14952 Rev 11 OPT12 TMU_KEY 5 [7:0]: Temporary unprotection key 4 Temporary unprotection key: Must be different from 0x00 or 0xFF OPT13 TMU_KEY 6 [7:0]: Temporary unprotection key 5 Temporary unprotection key: Must be different from 0x00 or 0xFF OPT14 TMU_KEY 7 [7:0]: Temporary unprotection key 6 Temporary unprotection key: Must be different from 0x00 or 0xFF OPT15 TMU_KEY 8 [7:0]: Temporary unprotection key 7 Temporary unprotection key: Must be different from 0x00 or 0xFF OPT16 TMU_MAXATT [7:0]: TMU access failure counter TMU_MAXATT can be initialized with the desired value only if TMU is disabled (TMU[3:0]=0101 in OPT6 option byte). When TMU is enabled, any attempt to temporary remove the readout protection by using wrong key values increments the counter. When the option byte value reaches 0x08, the Flash memory and data EEPROM are erased. OPT17 BL [7:0]: Bootloader enable If this option byte is set to 0x55 (complementary value 0xAA) the bootloader program is activated also in case of a programmed code memory (for more details, see the bootloader user manual, UM0560). Table 16. Option byte description (continued) Option byte no. Description |
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