STM8L151G4Y3 STMICROELECTRONICS [STMicroelectronics], STM8L151G4Y3 Datasheet - Page 59

• Manufacturer Part Number: STM8L151G4Y3
• Description: 8-bit ultralow power MCU, up to 32 KB Flash, 1 KB Data EEPROM RTC, LCD, timers, USART, I2C, SPI, ADC, DAC, comparators
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

STM8L151xx, STM8L152xx
8
Unique ID
devices feature a 96-bit unique device identifier which provides a reference number that is
unique for any device and in any context. The 96 bits of the identifier can never be altered by
the user.
The unique device identifier can be read in single bytes and may then be concatenated
using a custom algorithm.
The unique device identifier is ideally suited:
●
●
●
Table 13.
Address
0x492A
0x492B
0x492C
0x492D
0x492E
0x4926
0x4927
0x4928
0x4929
0x492F
0x4930
0x4931
For use as serial numbers
For use as security keys to increase the code security in the program memory while
using and combining this unique ID with software crytograhic primitives and protocols
before programming the internal memory.
To activate secure boot processes
X co-ordinate on
Y co-ordinate on
Unique ID registers (96 bits)
Wafer number
description
Lot number
the wafer
the wafer
Content
Doc ID 15962 Rev 5
7
6
5
Unique ID bits
4
U_ID[23:16]
U_ID[31:24]
U_ID[39:32]
U_ID[47:40]
U_ID[55:48]
U_ID[63:56]
U_ID[71:64]
U_ID[79:72]
U_ID[87:80]
U_ID[95:88]
U_ID[15:8]
U_ID[7:0]
3
2
1
Unique ID
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