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C8051F50X Datasheet(PDF) 96 Page - Silicon Laboratories |
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C8051F50X Datasheet(HTML) 96 Page - Silicon Laboratories |
96 / 312 page C8051F50x-F51x 96 Rev. 1.1 11.4. Serial Number Special Function Registers (SFRs) The C8051F50x-F51x devices include four SFRs, SN0 through SN3, that are pre-programmed during pro- duction 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 applica- tion, 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 11.7. 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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