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STM8L151C2 数据表(PDF) 53 Page - STMicroelectronics |
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STM8L151C2 数据表(HTML) 53 Page - STMicroelectronics |
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53 / 123 page  DS7204 Rev 11 53/123 STM8L151x2, STM8L151x3 Unique ID 53 8 Unique ID STM8 devices feature a 96-bit unique device identifier which provides a reference number that is unique for any device and in any context. The 96 bits of the identifier can never be altered by the user. The unique device identifier can be read in single bytes and may then be concatenated using a custom algorithm. The unique device identifier is ideally suited: • For use as serial numbers • For use as security keys to increase the code security in the program memory while using and combining this unique ID with software cryptographic primitives and protocols before programming the internal memory. • To activate secure boot processes Table 13. Unique ID registers (96 bits) Address Content description Unique ID bits 76 54 3 2 1 0 0x4926 X co-ordinate on the wafer U_ID[7:0] 0x4927 U_ID[15:8] 0x4928 Y co-ordinate on the wafer U_ID[23:16] 0x4929 U_ID[31:24] 0x492A Wafer number U_ID[39:32] 0x492B Lot number U_ID[47:40] 0x492C U_ID[55:48] 0x492D U_ID[63:56] 0x492E U_ID[71:64] 0x492F U_ID[79:72] 0x4930 U_ID[87:80] 0x4931 U_ID[95:88] |
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