STM8S105K6U3C View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STM8S105K6U3C

Access line, 16 MHz STM8S 8-bit MCU, up to 32 Kbytes Flash, integrated EEPROM,10-bit ADC, timers, UART, SPI, I²C

STMicroelectronics 

STM8S105xx

Unique ID

9

Unique ID

The 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:

• 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

Table 15: Unique ID registers (96 bits)

Address Content

Unique ID bits

description 7

6

5

4

3

2

0x48CD X co-ordinate

0x48CE on the wafer

U_ID[7:0]

U_ID[15:8]

1

0

0x48CF Y co-ordinate

0x48D0 on the wafer

U_ID[23:16]

U_ID[31:24]

0x48D1 Wafer number

U_ID[39:32]

0x48D2

U_ID[47:40]

0x48D3

U_ID[55:48]

0x48D4

U_ID[63:56]

0x48D5 Lot number

U_ID[71:64]

0x48D6

U_ID[79:72]

0x48D7

U_ID[87:80]

0x48D8

U_ID[95:88]

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