HTMS8301FUGSLASHAM datasheet(28/44 Pages) NXP

28 / 44 page

184430

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Product data sheet

PUBLIC

Rev. 3.0 — 18 March 2010

184430

28 of 44

NXP Semiconductors

HITAG µ

ISO 18000 transponder IC

14.8 LOCK BLOCK

Upon reception of this command without error, the transponder IC is write locking the

requested block (block size = 32-bit) permanently.

Blocks within the block address range from 00h to 18h as well as FEh and FFh can be

locked individually.

A LOCK BLOCK command with a block number value between 19h to 36h will lock all

blocks within the block address range 19h to 36h.

In case a password is applied to the memory a lock is only possible after a successful

Error Flag set to ’0’ indicates no error.

Table 25.

LOCK BLOCK - request format (16h)

Flags

Command

Data 1

Data 2

CRC-16

Description

(48)

(16)

No. of bits

00(1)00

010110

block number

without UII

in READY

state

10(1)00

010110

UII

block number

with UII

01(1)00

010110

block number

without UII

SELECTED

state

Table 26.

Response to a successful LOCK BLOCK request

Error flag

CRC-16

Description

(16)

No. of bits

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