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STLUX 数据表(PDF) 72 Page - STMicroelectronics |
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STLUX 数据表(HTML) 72 Page - STMicroelectronics |
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72 / 126 page ![]() Option bytes STLUX 72/126 DocID027870 Rev 1 nMISCUOPT (miscellaneous configuration register protection) nMISCUOPT: not (MISCUOPT) EMC byte protection. CLKCTL (CKC configuration register) Bit 1 - 0: PRSC [1:0] prescaler value for HSE to provide the AWU unit with the low speed clock: 00: 24 MHz to 128 kHz prescaler 01: 16 MHz to 128 kHz prescaler 10: 8 MHz to 128 kHz prescaler 11: 4 MHz to 128 kHz prescaler. Bit 3: EXTCLK external clock selection: 0: external crystal oscillator clock connected to the HseOscin and HseOscout signals 1: external direct drive clock connected to the HseOscin. Bit 4, 2: CKAWUSEL[1:0] AWU clock selection: 00: low speed internal clock used for AWU module 01: HSE high speed external clock with prescaler used for AWU module 10: reserved encoding value 11: reserved encoding value. Bit 7 - 5: RFU reserved; must be kept 0 during register writing for future compatibility. Table 47. nMISCUOPT (miscellaneous configuration register protection) Offset: 0x004806 Default value: 0xD7 (factory configuration) 76 5 4 3 2 1 0 nRFU nRFU nRFU nLSI_EN nlWdg_hw nWWdg_hw nWWdg_HALT r r r r/w r/w r/w r/w Table 48. CLKCTL (CKC configuration register) Offset: 0x004807 Default value: 0x09 (factory configuration) 76 5 4 3 2 1 0 RFU CKAWUSEL1 EXTCLK CKAWUSEL0 PRSC [1:0] rr/w r/w r/w r/w |
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