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STM8AP5X2ATAY 数据表(PDF) 53 Page - STMicroelectronics |
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STM8AP5X2ATAY 数据表(HTML) 53 Page - STMicroelectronics |
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53 / 100 page ![]() STM8AF61xx, STM8AF51xx Option bytes 53/100 OPT12 TMU_KEY 4 [7:0]: Temporary unprotection key 4 Temporary unprotection key: Must be different from 00h or FFh OPT13 TMU_KEY 5 [7:0]: Temporary unprotection key 5 Temporary unprotection key: Must be different from 00h or FFh OPT14 TMU_KEY 6 [7:0]: Temporary unprotection key 6 Temporary unprotection key: Must be different from 00h or FFh OPT15 TMU_KEY 7 [7:0]: Temporary unprotection key 7 Temporary unprotection key: Must be different from 00h or FFh OPT16 TMU_MAXATT [7:0]: TMU access failure counter Every unsuccessful trial to enter the temporary unprotection procedure increments the counter. More than eight unsuccessful trials trigger the global erase of the code and data memory. OPT17 BL_EN [7:0]: Bootloader enable If this optionbyte is set to 55h (complementary value AAh) the bootloader program is activated also in case of a programmed code memory (for more details, see the bootloader user manual, UM0500). Table 13. Option byte description (continued) Option byte no. Description |
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