NXP Semiconductors

SL3S1005

UCODE 9xm

5 Block diagram

The UCODE 9xm IC consists of three major blocks:

• Analog interface

• Digital control

• EEPROM

The analog part provides stable supply voltage and demodulates data received from the reader which is then

processed by the digital part. Further, the modulation transistor of the analog part transmits data back to the

reader.

The digital section includes the state machines, processes the protocol, and handles communication with the

EEPROM, which contains the EPC and the user data.

aaa-027138

ANALOG

RF INTERFACE

VREG

MOD

data

out

data

in

R/W

VDD

DEMOD

RECT

antenna

RF1

RF2

DIGITAL CONTROL

ANTICOLLISION

READWRITE

CONTROL

ACCESS CONTROL

EEPROM INTERFACE

CONTROL

RF INTERFACE

CONTROL

SEQUENCER

CHARGE PUMP

EEPROM

MEMORY

Adjust

Memory Safeguard

CONTROL

Figure 1. Block diagram of UCODE 9xm IC

SL3S1005

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Product data sheet

Rev. 3.1 — 12 February 2025

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