STLUX385ATR datasheet(66/99 Pages) STMICROELECTRONICS

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Device identification

STLUX385A

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DocID024387 Rev 2

Device identification

9.1

Unique ID

The STLUX385A provides a 56-bits unique identifier code usable as device identification

number which can be used to increase the device security. The unique ID code is a frozen

signature not alterable by user.

The unique device identifier is ideally used by the application software and is suited for:

•

serial code

•

security keys in conjunction with cryptographic software to increase the embedded

flash code security

•

activating the secure boot sequence

9.2

Device ID

The STLUX385A device identification model is coded in the following register area and it

cannot be altered by the user.

The register fields have the follow meaning:

Dev_ID [7:0]:

Device identification model

0x00: STLUX385

Others: RFU reserved values

Rev_ID [4:0]:

Revision identification model

00000: STLUX385

00001: STLUX385A

Others: RFU reserved values

Table 30. Unique ID register overview

Address

Option

name

Unique ID bits

6543

48E0h

UID0

LotNum[7:0]

48E1h

UID1

LotNum[15:8]

48E2h

UID2

LotNum[23:16]

48E3h

UID3

WaferNum[4:0]

Xcoord[7:5]

48E4h

UID4

Xcoord[4:0]

Ycoord[7:5]

48E5h

UID5

Ycoord[4:0]

LotNum[42:40]

48E6h

UID6

LotNum[31:24]

48E7h

UID7

LotNum[39:32]

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