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C8051F54X Datasheet(PDF) 85 Page - Silicon Laboratories |
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C8051F54X Datasheet(HTML) 85 Page - Silicon Laboratories |
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85 / 276 page  C8051F54x Rev. 1.1 84 10.4. Serial Number Special Function Registers (SFRs) The C8051F54x devices include four SFRs, SN0 through SN3, that are pre-programmed during production with a unique, 32-bit serial number. The serial number provides a unique identification number for each device and can be read from the application firmware. If the serial number is not used in the application, these four registers can be used as general purpose SFRs. SFR Addresses: SN0 = 0xF9; SN1 = 0xFA; SN2 = 0xFB; SN3 = 0xFC; SFR Page = 0x0F; SFR Definition 10.7. SNn: Serial Number n Bit 7 6 5 4 3 2 1 0 Name SERNUMn[7:0] Type R/W Reset Varies—Unique 32-bit value Bit Name Function 7:0 SERNUMn[7:0] Serial Number Bits. The four serial number registers form a 32-bit serial number, with SN3 as the most significant byte and SN0 as the least significant byte. |
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