STM8S208MBT3BTR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STM8S208MBT3BTR

Performance line, 24 MHz STM8S 8-bit MCU, up to 128 KB Flash, integrated EEPROM, 10-bit ADC, timers, 2 UARTs, SPI, I²C, CAN

STMicroelectronics 

Unique ID

9

Unique ID

STM8S207xx, STM8S208xx

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 crytograhic primitives and protocols

before programming the internal memory.

● To activate secure boot processes

Table 14. Unique ID registers (96 bits)

Address

Content

description

7

6

Unique ID bits

5

4

3

2

1

0

0x48CD X co-ordinate on

0x48CE

the wafer

U_ID[7:0]

U_ID[15:8]

0x48CF Y co-ordinate on

0x48D0

the wafer

U_ID[23:16]

U_ID[31:24]

0x48D1

0x48D2

Wafer number

U_ID[39:32]

U_ID[47:40]

0x48D3

U_ID[55:48]

0x48D4

U_ID[63:56]

0x48D5

0x48D6

Lot number

U_ID[71:64]

U_ID[79:72]

0x48D7

U_ID[87:80]

0x48D8

U_ID[95:88]

50/103

Doc ID 14733 Rev 12

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