STM8S105S4(2015) データシートの表示（PDF） - STMicroelectronics

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STM8S105S4
(Rev.:2015)

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

STMicroelectronics 

Unique ID

9

Unique ID

STM8S105x4/6

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 byte 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 cryptographic primitives and

protocols before programming the internal memory.

 To activate secure boot processes

Address

Table 14. Unique ID registers (96 bits)

Content

description

Unique ID bits

7

6

5

4

3

2

1

0

0x48CD

0x48CE

X co-ordinate on

the wafer

U_ID[7:0]

U_ID[15:8]

0x48CF

0x48D0

Y co-ordinate 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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DocID14771 Rev 15

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