NXP Semiconductors MF0UL1101DUD2A

Overview

MF0UL1101DUD2A from NXP Semiconductors is a contactless ticket IC compliant with ISO/IEC 14443 Type A, featuring 640-bit EEPROM (384-bit user memory), 7-byte UID, 3×24-bit one-way counters, and 32-bit OTP area - deployed in public transport tickets, event passes, and loyalty cards.

For engineers reviewing the MF0UL1101DUD2A datasheet, MF0UL1101DUD2A pinout, MF0UL1101DUD2A application, or MF0UL1101DUD2A equivalent, key selection considerations include 13.56 MHz operation, <35 ms transaction time, field-programmable page locking, ECC-based originality signature, and password-protected memory access.

Technical Context

The MF0UL1101DUD2A integrates RF interface (modulator/demodulator, rectifier, clock regenerator), digital control unit, and 20-page EEPROM (4 bytes/page). It operates without external components, drawing power and data directly from the reader's 13.56 MHz RF field.

Its state machine supports IDLE → READY1 → READY2 → ACTIVE → AUTHENTICATED transitions, with anticollision handling via cascade-level 1/2 SELECT and WUPA/REQA commands. Memory access enforces lock-bit protection per page (pages 03h–0Fh) and password verification starting at configurable AUTH0 address.

Key Specifications

Pinout & Package

MF0UL1101DUD2A is supplied as bare die (120 μm thickness, Au bumps) on 12-inch wafer in FFC Bump packaging - intended for embedding into inlays or laminated tickets. No external pins; electrical interface is exclusively via two antenna terminals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar contactless ticketing applications.

Compared with MF0UL1101DUD and MF0ULH1101DUD, the MF0UL1101DUD2A delivers identical memory architecture, security features, and timing performance while optimizing wafer-scale manufacturing yield - making it the preferred choice for high-volume, cost-sensitive ticket inlay production without antenna redesign.

Availability

MF0UL1101DUD2A is available at Aetrix Electronics and suitable for public transportation ticketing, event access control, and retail loyalty programs requiring stable component supply, long-term lifecycle support, and traceable NXP-sourced silicon.

Supply support for MF0UL1101DUD2A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and identification markets - with over two decades of MIFARE platform development.

The MF0UL1101DUD2A belongs to the MIFARE Ultralight EV1 family, engineered specifically for high-volume, low-cost contactless ticketing applications where reliability, ISO/IEC 14443 compliance, and anti-cloning features are mandatory.

FAQ

What is the exact memory organization of MF0UL1101DUD2A?

The MF0UL1101DUD2A contains 640-bit EEPROM organized in 20 pages of 4 bytes each. Pages 00h–02h hold the 7-byte UID and check bytes; page 03h is the 32-bit OTP area; pages 04h–0Fh provide 384-bit user R/W memory; pages 10h–13h are configuration pages supporting password and lock functionality. This layout is fully compatible with legacy MF0ICU1 systems.

Does MF0UL1101DUD2A support password protection, and how is it configured?

Yes, MF0UL1101DUD2A supports 32-bit password protection via PWD_AUTH command. Protection is enabled by writing a page address (e.g., 04h) to the AUTH0 byte in configuration page 10h. Once set, all memory access from that page onward requires successful password verification. Default AUTH0 = FFh disables protection until explicitly configured.

What is the operating distance and transaction speed of MF0UL1101DUD2A?

The MF0UL1101DUD2A achieves up to 100 mm operating distance depending on antenna geometry and reader power, and completes typical ticketing transactions in under 35 ms. Fast counter increment (INCR_CNT) executes in under 10 ms - verified per NXP Rev. 3.3 datasheet test conditions at 13.56 MHz and 106 kbit/s data rate.

How does the anticollision function work in MF0UL1101DUD2A?

The MF0UL1101DUD2A implements true ISO/IEC 14443-3 Type A anticollision using cascade-level 1 and 2 SELECT commands. Multiple MF0UL1101DUD2A devices in the same RF field are uniquely identified by their 7-byte UID, allowing sequential selection and transaction - essential for fare gates processing stacked tickets or crowded event entrances.

Is MF0UL1101DUD2A backward compatible with earlier MIFARE Ultralight ICs?

Yes, MF0UL1101DUD2A is fully backward compatible with MF0ICU1 at the command and memory map level. The first 512 bits retain identical structure, including UID placement, lock byte format, and READ/FAST_READ command behavior - enabling seamless migration in existing ticketing infrastructure without firmware changes.