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STLUX 数据表(PDF) 77 Page - STMicroelectronics |
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STLUX 数据表(HTML) 77 Page - STMicroelectronics |
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77 / 126 page ![]() DocID027870 Rev 1 77/126 STLUX Option bytes 126 AFR_IOMXP2 (alternative Port2 configuration register) Bit 3 - 0: RFU reserved; must be kept 0 during register writing for future product compatibility Bit 4: Refer to MSC_IOMXP2 miscellaneous register field description Section 7.4 on page 39. Bit 6 - 5: RFU reserved; must be kept 0 during register writing for future product compatibility. On STLUX285A devices bit 6 must be kept to 1. Bit 7: Refer to MSC_IOMXP2 miscellaneous register field description Section 7.4 nAFR_IOMXP2 (alternative Port2 configuration register protection) nAFR_IOMXP2: not (AFR_IOMXP2) EMC byte protection. Table 58. AFR_IOMXP2 (alternative Port2 configuration register) Offset: 0x004813 Default value: 0x10 or 0x50 according to the device 76 5 4 3 2 1 0 Sel_SWIM(1) 1. Available only on the STLUX325A, otherwise keep 0. RFU Sel_P254(2) 2. Not available on the STLUX285A, must be kept to 1. RFU RFU RFU RFU r/w r r/w r r r r Table 59. nAFR_IOMXP2 (alternative Port2 configuration register protection) Offset: 0x004814 Default value: 0xEF or 0xAF according to the device 76 5 4 3 2 1 0 nSel_SWIM nRFU nSel_P254 nRFU nRFU nRFU nRFU r/w r r/w r r r r |
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