FICR — Factory information configuration registers

Factory information configuration registers (FICR) are pre-programmed in factory and cannot be erased by the user. These registers contain chip-specific information and configuration.

Registers

Table 1. Instances
Base address Peripheral Instance Description Configuration
0x10000000 FICR FICR

Factory information configuration

    
Table 2. Register overview
Register Offset Description
CODEPAGESIZE 0x010

Code memory page size

  
CODESIZE 0x014

Code memory size

  
DEVICEID[0] 0x060

Device identifier

  
DEVICEID[1] 0x064

Device identifier

  
ER[0] 0x080

Encryption root, word 0

  
ER[1] 0x084

Encryption root, word 1

  
ER[2] 0x088

Encryption root, word 2

  
ER[3] 0x08C

Encryption root, word 3

  
IR[0] 0x090

Identity Root, word 0

  
IR[1] 0x094

Identity Root, word 1

  
IR[2] 0x098

Identity Root, word 2

  
IR[3] 0x09C

Identity Root, word 3

  
DEVICEADDRTYPE 0x0A0

Device address type

  
DEVICEADDR[0] 0x0A4

Device address 0

  
DEVICEADDR[1] 0x0A8

Device address 1

  
INFO.PART 0x100

Part code

  
INFO.VARIANT 0x104

Build code (hardware version and production configuration)

  
INFO.PACKAGE 0x108

Package option

  
INFO.RAM 0x10C

RAM variant

  
INFO.FLASH 0x110

Flash variant

  
INFO.UNUSED8[0] 0x114  

Reserved
INFO.UNUSED8[1] 0x118  

Reserved
INFO.UNUSED8[2] 0x11C  

Reserved
PRODTEST[0] 0x350

Production test signature 0

  
PRODTEST[1] 0x354

Production test signature 1

  
PRODTEST[2] 0x358

Production test signature 2

  
TEMP.A0 0x404

Slope definition A0

  
TEMP.A1 0x408

Slope definition A1

  
TEMP.A2 0x40C

Slope definition A2

  
TEMP.A3 0x410

Slope definition A3

  
TEMP.A4 0x414

Slope definition A4

  
TEMP.A5 0x418

Slope definition A5

  
TEMP.B0 0x41C

Y-intercept B0

  
TEMP.B1 0x420

Y-intercept B1

  
TEMP.B2 0x424

Y-intercept B2

  
TEMP.B3 0x428

Y-intercept B3

  
TEMP.B4 0x42C

Y-intercept B4

  
TEMP.B5 0x430

Y-intercept B5

  
TEMP.T0 0x434

Segment end T0

  
TEMP.T1 0x438

Segment end T1

  
TEMP.T2 0x43C

Segment end T2

  
TEMP.T3 0x440

Segment end T3

  
TEMP.T4 0x444

Segment end T4

  
NFC.TAGHEADER0 0x450

Default header for NFC tag. Software can read these values to populate NFCID1_3RD_LAST, NFCID1_2ND_LAST, and NFCID1_LAST.

  
NFC.TAGHEADER1 0x454

Default header for NFC tag. Software can read these values to populate NFCID1_3RD_LAST, NFCID1_2ND_LAST, and NFCID1_LAST.

  
NFC.TAGHEADER2 0x458

Default header for NFC tag. Software can read these values to populate NFCID1_3RD_LAST, NFCID1_2ND_LAST, and NFCID1_LAST.

  
NFC.TAGHEADER3 0x45C

Default header for NFC tag. Software can read these values to populate NFCID1_3RD_LAST, NFCID1_2ND_LAST, and NFCID1_LAST.

  

CODEPAGESIZE

Address offset: 0x010

Code memory page size

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

CODEPAGESIZE

    

Code memory page size

CODESIZE

Address offset: 0x014

Code memory size

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

CODESIZE

    

Code memory size in number of pages

Total code space is: CODEPAGESIZE * CODESIZE

DEVICEID[n] (n=0..1)

Address offset: 0x060 + (n × 0x4)

Device identifier

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

DEVICEID

    

64 bit unique device identifier

DEVICEID[0] contains the least significant bits of the device identifier. DEVICEID[1] contains the most significant bits of the device identifier.

ER[n] (n=0..3)

Address offset: 0x080 + (n × 0x4)

Encryption root, word n

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

ER

    

Encryption root, word n

IR[n] (n=0..3)

Address offset: 0x090 + (n × 0x4)

Identity Root, word n

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

IR

    

Identity Root, word n

DEVICEADDRTYPE

Address offset: 0x0A0

Device address type

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                                               A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

DEVICEADDRTYPE

    

Device address type

     

Public

0

Public address

     

Random

1

Random address

DEVICEADDR[n] (n=0..1)

Address offset: 0x0A4 + (n × 0x4)

Device address n

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

DEVICEADDR

    

48 bit device address

DEVICEADDR[0] contains the least significant bits of the device address. DEVICEADDR[1] contains the most significant bits of the device address. Only bits [15:0] of DEVICEADDR[1] are used.

INFO.PART

Address offset: 0x100

Part code

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
Reset 0x00052833 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 1 0 1 0 0 0 0 0 1 1 0 0 1 1
ID Access Field Value ID Value Description
A R

PART

    

Part code

     

N52820

0x52820

nRF52820

     

N52833

0x52833

nRF52833

     

N52840

0x52840

nRF52840

     

Unspecified

0xFFFFFFFF

Unspecified

INFO.VARIANT

Address offset: 0x104

Build code (hardware version and production configuration)

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

VARIANT

    

Build code (hardware version and production configuration). Encoded as ASCII.

     

AAAA

0x41414141

AAAA

     

AAAB

0x41414142

AAAB

     

AAA0

0x41414130

AAA0

     

AAA1

0x41414131

AAA1

     

AAB0

0x41414230

AAB0

     

Unspecified

0xFFFFFFFF

Unspecified

INFO.PACKAGE

Address offset: 0x108

Package option

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

PACKAGE

    

Package option

     

QD

0x2007

QDxx - 5x5 40-pin QFN

     

QI

0x2004

QIxx - 7x7 73-pin aQFN

     

CJ

0x2008

CJxx - 3.175 x 3.175 WLCSP

     

Unspecified

0xFFFFFFFF

Unspecified

INFO.RAM

Address offset: 0x10C

RAM variant

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

RAM

    

RAM variant

     

K16

0x10

16 kByte RAM

     

K32

0x20

32 kByte RAM

     

K64

0x40

64 kByte RAM

     

K128

0x80

128 kByte RAM

     

K256

0x100

256 kByte RAM

     

Unspecified

0xFFFFFFFF

Unspecified

INFO.FLASH

Address offset: 0x110

Flash variant

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

FLASH

    

Flash variant

     

K128

0x80

128 kByte FLASH

     

K256

0x100

256 kByte FLASH

     

K512

0x200

512 kByte FLASH

     

K1024

0x400

1 MByte FLASH

     

K2048

0x800

2 MByte FLASH

     

Unspecified

0xFFFFFFFF

Unspecified

PRODTEST[n] (n=0..2)

Address offset: 0x350 + (n × 0x4)

Production test signature n

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

PRODTEST

    

Production test signature n

     

Done

0xBB42319F

Production tests done

     

NotDone

0xFFFFFFFF

Production tests not done

TEMP.A0

Address offset: 0x404

Slope definition A0

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                         A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

A

    

A (slope definition) register.

TEMP.A1

Address offset: 0x408

Slope definition A1

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                         A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

A

    

A (slope definition) register.

TEMP.A2

Address offset: 0x40C

Slope definition A2

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                         A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

A

    

A (slope definition) register.

TEMP.A3

Address offset: 0x410

Slope definition A3

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                         A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

A

    

A (slope definition) register.

TEMP.A4

Address offset: 0x414

Slope definition A4

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                         A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

A

    

A (slope definition) register.

TEMP.A5

Address offset: 0x418

Slope definition A5

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                         A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

A

    

A (slope definition) register.

TEMP.B0

Address offset: 0x41C

Y-intercept B0

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                     A A A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

B

    

B (y-intercept)

TEMP.B1

Address offset: 0x420

Y-intercept B1

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                     A A A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

B

    

B (y-intercept)

TEMP.B2

Address offset: 0x424

Y-intercept B2

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                     A A A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

B

    

B (y-intercept)

TEMP.B3

Address offset: 0x428

Y-intercept B3

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                     A A A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

B

    

B (y-intercept)

TEMP.B4

Address offset: 0x42C

Y-intercept B4

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                     A A A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

B

    

B (y-intercept)

TEMP.B5

Address offset: 0x430

Y-intercept B5

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                     A A A A A A A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

B

    

B (y-intercept)

TEMP.T0

Address offset: 0x434

Segment end T0

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                                 A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

T

    

T (segment end) register

TEMP.T1

Address offset: 0x438

Segment end T1

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                                 A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

T

    

T (segment end) register

TEMP.T2

Address offset: 0x43C

Segment end T2

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                                 A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

T

    

T (segment end) register

TEMP.T3

Address offset: 0x440

Segment end T3

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                                 A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

T

    

T (segment end) register

TEMP.T4

Address offset: 0x444

Segment end T4

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID                                                 A A A A A A A A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A R

T

    

T (segment end) register

NFC.TAGHEADER0

Address offset: 0x450

Default header for NFC tag. Software can read these values to populate NFCID1_3RD_LAST, NFCID1_2ND_LAST, and NFCID1_LAST.

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID

D

D

D

D

D

D

D

D

C

C

C

C

C

C

C

C

B

B

B

B

B

B

B

B

A

A

A

A

A

A

A

A
Reset 0xFFFFFF5F 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 0 1 1 1 1 1
ID Access Field Value ID Value Description
A R

MFGID

    

Default Manufacturer ID: Nordic Semiconductor ASA has ICM 0x5F

B R

UD1

    

Unique identifier byte 1

C R

UD2

    

Unique identifier byte 2

D R

UD3

    

Unique identifier byte 3

NFC.TAGHEADER1

Address offset: 0x454

Default header for NFC tag. Software can read these values to populate NFCID1_3RD_LAST, NFCID1_2ND_LAST, and NFCID1_LAST.

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID

D

D

D

D

D

D

D

D

C

C

C

C

C

C

C

C

B

B

B

B

B

B

B

B

A

A

A

A

A

A

A

A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A-D R

UD[i] (i=4..7)

    

Unique identifier byte i

NFC.TAGHEADER2

Address offset: 0x458

Default header for NFC tag. Software can read these values to populate NFCID1_3RD_LAST, NFCID1_2ND_LAST, and NFCID1_LAST.

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID

D

D

D

D

D

D

D

D

C

C

C

C

C

C

C

C

B

B

B

B

B

B

B

B

A

A

A

A

A

A

A

A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A-D R

UD[i] (i=8..11)

    

Unique identifier byte i

NFC.TAGHEADER3

Address offset: 0x45C

Default header for NFC tag. Software can read these values to populate NFCID1_3RD_LAST, NFCID1_2ND_LAST, and NFCID1_LAST.

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID

D

D

D

D

D

D

D

D

C

C

C

C

C

C

C

C

B

B

B

B

B

B

B

B

A

A

A

A

A

A

A

A
Reset 0xFFFFFFFF 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID Access Field Value ID Value Description
A-D R

UD[i] (i=12..15)

    

Unique identifier byte i