LRI1K datasheet(2/86 Pages) STMICROELECTRONICS

Part #	LRI1K

Description	1024-bit EEPROM tag IC at 13.56 MHz, with 64-bit UID and kill code, ISO 15693 and ISO 18000-3 Mode 1 compliant

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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2 / 86 page

Contents

LRI1K

2/86

Doc ID 17170 Rev 3

Contents

1

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.1

Memory mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.2

Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.3

Initial dialogue for vicinity cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.3.1

Power transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.3.2

Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.3.3

Operating field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2

Communication signal from VCD to LRI1K . . . . . . . . . . . . . . . . . . . . . 14

3

Data rate and data coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.1

Data coding mode: 1 out of 256 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.2

Data coding mode: 1 out of 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.3

VCD to LRI1K frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.4

Start of frame (SOF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4

Communications signal from LRI1K to VCD . . . . . . . . . . . . . . . . . . . . 20

4.1

Load modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.2

Subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.3

Data rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

5

Bit representation and coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.1

Bit coding using one subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.1.1

High data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.1.2

Low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.2

Bit coding using two subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

5.2.1

High data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

5.2.2

Low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

6

LRI1K to VCD frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

6.1

SOF when using one subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

6.1.1

High data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

6.1.2

Low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

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