c8051f544 Silicon Laboratories, c8051f544 Datasheet - Page 84

• Manufacturer Part Number: c8051f544
• Description: Mixed Signal Isp Flash Mcu Family
• Manufacturer: Silicon Laboratories

C8051F54x
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 Definition 10.7. SNn: Serial Number n
SFR Addresses: SN0 = 0xF9; SN1 = 0xFA; SN2 = 0xFB; SN3 = 0xFC; SFR Page = 0x0F;
84
Name
Reset
7:0
Bit
Type
Bit
SERNUMn[7:0] Serial Number Bits.
Name
7
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.
6
5
Varies—Unique 32-bit value
Rev. 1.0
SERNUMn[7:0]
4
R/W
Function
3
2
1
0