NXP Semiconductors

SL3S1005

UCODE 9xm

9.4 Supported commands

UCODE 9xm supports all

mandatory EPC Gen2v2.1 commands.

In addition, the UCODE 9xm supports the following

optional commands:

• Access

• Block Write (32 bit on even addresses)

• Blockpermalock (128 bit)

• Untraceable including read range reduction

9.5 UCODE 9xm memory

The UCODE 9xm memory is implemented according to EPC Gen2v2.1:

Name

Size

Bank

Reserved memory (32-bit Kill password and 32-bit access password)

64 bit

00b

EPC (excluding 16-bit CRC-16 and 16-bit PC)

128 / 256 / 496 bit

01b

TID (including permalocked unique 48-bit serial number)

96 bit

10b

UCODE 9xm configuration word

16 bit

10b

USER

752 / 624 / 384 bit

11b

Table 4. UCODE 9xm memory sections

The logical address of all memory banks begins at zero (00h).

In addition to the four memory banks, one configuration word to handle the UCODE 9xm specific features is

available at TID bank 10 address bit-70h.

The configuration word is described in detail in Section 9.6.1.

The EPC/UM configuration is described in detail in Section 9.6.2.

The TID complies with the GS1 EPC Tag Data Standard. See [2].

The initial value of the Kill- and Access-password is 0000h. It is recommended to use diversified passwords for

tag populations.

SL3S1005

All information provided in this document is subject to legal disclaimers.

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Product data sheet

Rev. 3.1 — 12 February 2025

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