LRI64-MBTG datasheet(5/38 Pages) STMICROELECTRONICS

Part #	LRI64-MBTG

Description	Memory TAG IC, 64-bit Unique ID with WORM User Area 13.56MHz, ISO15693 and ISO18000-3 Mode 1 Compliant

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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LRI64

SUMMARY DESCRIPTION

The LRI64 is a contactless memory, powered by

an externally transmitted radio wave. It contains a

120-bit non-volatile memory. The memory is orga-

nized as 15 blocks of 8 bits, of which 7 blocks are

accessible as Write-Once Read-Many (WORM)

memory.

Figure 2. Logic Diagram

The LRI64 is accessed using a 13.56MHz carrier

wave. Incoming data are demodulated from the re-

ceived Amplitude Shift Keying (ASK) signal, 10%

modulated. The data are transferred from the

reader to the LRI64 at 26Kbit/s, using the “1-out-

of-4” pulse encoding mode.

Outgoing data are sent by the LRI64, generated by

load variation on the carrier wave, using Manches-

ter coding with a single sub-carrier frequency of

423kHz. The data are transferred from the LRI64

to the reader at 26Kbit/s, in the high data rate

mode.

The LRI64 supports the high data rate communi-

cation protocols of ISO 15693 and ISO 18000-3

Mode 1 recommendations. All other data rates and

modulations are not supported by the LRI64.

Table 1. Signal Names

Figure 3. MLP Connections

Memory Mapping

The LRI64 is organized as 15 blocks of 8 bits as

shown in Figure 4. Each block is automatically

write-protected after the first valid write access.

Figure 4. LRI64 Memory Mapping

The LRI64 uses the first 8 blocks (blocks 0 to 7) to

store the 64-bit Unique Identifier (UID). The UID is

used during the anti-collision sequence (Invento-

ry). It is written, by ST, at time of manufacture, but

part of it can be customer-accessible and custom-

er-writable, on special request.

The LRI64 has an AFI register, in which to store

the Application Family Identifier value, which is

also used during the anti-collision sequence.

The LRI64 has a DSFID register, in which to store

the Data Storage Format Identifier value, which is

used for the LRI64 Inventory answer.

The five following blocks (blocks 10 to 14) are

Write-Once Read-Many (WORM) memory. It is

possible to write to each of them once. After the

first valid write access, the block is automatically

locked, and only read commands are possible.

AC1

Antenna Coil

AC0

Antenna Coil

AI08590

AC1

LRI64

AC0

Power

Supply

Regulator

Manchester

Load

Modulator

ASK

Demodulator

120-bit

WORM

Memory

1

AI11612

2

3

4

8

7

6

5

AC0

AC1

n/c

AI09741

Block

Addr

01234567

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

UID 0

UID 1

UID 2

UID 3

UID 4

UID 5 = IC_ID

UID 6 = 02h

UID 7 = E0h

AFI (WORM Area)

DSFID (WORM Area)

WORM Area

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