NXP Semiconductors MF1S7001XDUD2/V1A

Overview

MF1S7001XDUD2/V1 from NXP Semiconductors is a contactless smart card IC compliant with ISO/IEC 14443 Type A, featuring 4 kB EEPROM organized in 40 sectors (32×4-block + 8×16-block), 13.56 MHz operating frequency, 106 kbit/s data rate, and mutual three-pass authentication using CRYPTO1. It is deployed in public transport ticketing systems where sub-100 ms transaction time and secure multi-application key hierarchy are required.

For engineers reviewing the MF1S7001XDUD2/V1 datasheet, MF1S7001XDUD2/V1 pinout, MF1S7001XDUD2/V1 application, or MF1S7001XDUD2/V1 equivalent, this page delivers verified technical context, sector-level memory access rules, UID-specific anticollision behavior, and real-world timing constraints for integration into reader firmware and system validation.

Technical Context

The MF1S7001XDUD2/V1 implements a dedicated RF interface per ISO/IEC 14443A with integrated rectifier, voltage regulator, clock regenerator, and Power-On Reset - requiring no external components beyond the antenna coil. Its digital control unit executes anticollision (two-cascade level for 7-byte UID), sector-based authentication, and value-block arithmetic (increment/decrement/transfer) with built-in backup management.

Memory operations are gated by sector trailer–defined access conditions stored in bytes 6–9, supporting read/write blocks and value blocks with configurable key-A/key-B permissions. The CRYPTO1 cipher engine enforces encryption after successful authentication, and all communication includes 16-bit CRC, odd-parity bits, bit counting, and bit coding for integrity.

Key Specifications

Pinout & Package

MF1S7001XDUD2/V1 is supplied as a bumped die on 12-inch wafer (120 μm thickness, film frame carrier), intended for module assembly into MOA4 or MOA8 leadless plastic packages. It has no conventional pins; electrical connection is made exclusively via two antenna terminals (LA and LB) bonded to an external planar coil.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar contactless smart card IC applications.

Compared with MF1S7001XDUD2/V1, MF1S7000XDA4/V1 trades wafer-level flexibility for faster time-to-market via standardized module packaging, while MF1S7031XDUD2/V1 reduces security assurance by removing deterministic UID-based anticollision - both require revalidation of antenna matching and reader firmware timing margins.

Availability

MF1S7001XDUD2/V1 is available at Aetrix Electronics and suitable for public transportation ticketing, access management, and electronic toll collection requiring stable component supply across multi-year deployments and global certification cycles.

Supply support for MF1S7001XDUD2/V1 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 headquarters in Eindhoven, Netherlands.

The MIFARE Classic EV1 product line - including MF1S7001XDUD2/V1 - was engineered for mainstream contactless smart card applications demanding proven security, ISO/IEC 14443A interoperability, and rapid solution development in transit and access control systems.

FAQ

What is the exact memory organization of the MF1S7001XDUD2/V1?

The MF1S7001XDUD2/V1 contains 4096 bytes of EEPROM organized into 40 sectors: sectors 0–31 each contain 4 blocks (64 bytes), and sectors 32–39 each contain 16 blocks (256 bytes). Each block holds 16 bytes. Sector trailers (last block per sector) store keys and access conditions; block 0 in sector 0 is factory-programmed manufacturer data and write-protected.

Does the MF1S7001XDUD2/V1 support both 4-byte and 7-byte UID variants?

No - MF1S7001XDUD2/V1 specifically uses a 7-byte UID, as confirmed by its ordering code suffix "01" and "DUD2" designation in Table 2 of the datasheet. The 4-byte NUID variant is designated separately (e.g., MF1S7031XDUD2/V1). The 7-byte UID enables full ISO/IEC 14443-3 two-cascade anticollision, which is mandatory for high-density environments like transit gates.

How does the MF1S7001XDUD2/V1 handle authentication and data encryption?

The MF1S7001XDUD2/V1 implements mutual three-pass authentication using the proprietary CRYPTO1 stream cipher. After successful authentication with either Key A or Key B from the sector trailer, all subsequent command/response frames - including read, write, increment, and decrement - are encrypted. The cipher operates in real time within the IC's crypto unit; no host-side encryption is required.

What is the role of the LA and LB terminals on the MF1S7001XDUD2/V1?

LA and LB are the only two electrical terminals of the MF1S7001XDUD2/V1. They connect directly to the two ends of an external planar antenna coil, forming a resonant LC circuit tuned to 13.56 MHz. These terminals serve dual roles: harvesting RF energy for power and coupling modulated data signals bidirectionally - no additional components (capacitors, resistors, diodes) are required between LA/LB and the antenna.

Can the MF1S7001XDUD2/V1 be used in value-block applications like electronic purses?

Yes - the MF1S7001XDUD2/V1 supports value blocks in sectors configured with appropriate access bits (e.g., C1C2C3 = 110 or 001). Value blocks enforce a strict 16-byte format with triple-stored signed 32-bit values and quadruple-stored address bytes, enabling atomic increment/decrement/transfer/restore operations with built-in error detection and backup management - ideal for fare deduction or micro-payment use cases.