STM8L101 STMICROELECTRONICS [STMicroelectronics], STM8L101 Datasheet - Page 36

• Manufacturer Part Number: STM8L101
• Description: 8-bit ultralow power microcontroller with up to 8 Kbytes Flash multifunction timers, comparators, USART, SPI, I2C
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Unique ID
8
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Unique ID
STM8L101xx 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 12.
Address
0x492A
0x492B
0x492C
0x492D
0x492E
0x4925
0x4926
0x4927
0x4928
0x4929
0x492F
0x4930
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 cryptograhic 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 15275 Rev 11
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
STM8L101xx
1
0