HTMS8301FUGSLASHAM datasheet(8/44 Pages) NXP

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184430

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Product data sheet

PUBLIC

Rev. 3.0 — 18 March 2010

184430

8 of 44

NXP Semiconductors

HITAG µ

ISO 18000 transponder IC

8.2 Memory configuration

The User Configuration Bock consists of one configurable byte (Byte0) and three reserved

bytes (Byte1 to Byte3)

The bits in the User Configuration Block enable a customized memory configuration of the

HITAG µ ISO 18000 transponder ICs.

Three areas (1 to 127bit, 1 to 511 bits and upper memory) can be restricted to read/write

access.

The User Configuration Block (User Config) is programmable by using WRITE SINGLE

BLOCK command at address FFh. Bits 7 to 31 (Byte1 to Byte3) are reserved for further

usage.

The user configuration block (block address FFh) and the password block (block address

FEh) can be locked with the LOCK BLOCK command.

Attention: The lock of the blocks is permanently and therefore irreversible!

[1]

PWD(w)=1: read without password and write with password

[2]

PWD(r/w)=1: read and write with password

9. General requirements

The HITAG

μ ISO 18000 transponder IC is compatible with the ISO 18000-2 standard.

At the time a HITAG

μ ISO 18000 based transponder is in the interrogator field it doesn’t

respond until it receives a request from the RWD.

All communication from reader to HITAG µ ISO 18000 transponder ICs and vice versa and

the CRC error detection bits (if applicable) are transmitted starting with LSB first.

In the case that multiple HITAG µ ISO 18000 based transponders are in the interrogation

field which cause collisions the RWD has to start the anticollision procedure as described

in this document.

Table 4.

User configuration block to Byte0

Byte0

Description

bit6

bit5

bit4

bit3

bit2

bit1

bit 0

Bit-no.

PWD (r/w) [2]

Bit512… Max

PWD (w) [1]

Bit512… Max

PWD (w) [1]

Bit128… 511

PWD (w) [1]

Bit0… 127

RFU

Value/meaning

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