C8051F502-IMR Silicon Laboratories Inc, C8051F502-IMR Datasheet - Page 96

• Manufacturer Part Number: C8051F502-IMR
• Description: MCU 8-Bit C8051F50x 8051 CISC 64KB Flash 2.5V/3.3V/5V 32-Pin QFN EP T/R
• Manufacturer: Silicon Laboratories Inc

Specifications of C8051F502-IMR

• Package: 32QFN EP
• Device Core: 8051
• Family Name: C8051F50x
• Maximum Speed: 50 MHz
• Ram Size: 4.25 KB
• Program Memory Size: 64 KB
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 25
• Interface Type: I2C/SPI/UART
• On-chip Adc: 32-chx12-bit
• Operating Temperature: -40 to 125 °C
• Number Of Timers: 4

C8051F50x/F51x
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 Definition 11.7. SNn: Serial Number n
SFR Addresses: SN0 = 0xF9; SN1 = 0xFA; SN2 = 0xFB; SN3 = 0xFC; SFR Page = 0x0F;
96
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. 1.2
SERNUMn[7:0]
4
R/W
Function
3
2
1
0