NXP Semiconductors MF1S7001XDUD/V1V

Overview

MF1S7001XDUD/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, 7-byte UID, 13.56 MHz operating frequency, and CRYPTO1-based mutual three-pass authentication. It enables sub-100 ms ticketing transactions in public transport systems.

For engineers reviewing the MF1S7001XDUD/V1 datasheet, MF1S7001XDUD/V1 pinout, MF1S7001XDUD/V1 application, or MF1S7001XDUD/V1 equivalent, key selection criteria include UID type (7-byte), EEPROM sector structure (32×4-block + 8×16-block), anticollision support for multiple cards, data integrity via 16-bit CRC and parity, and compatibility with MIFARE Classic EV1 infrastructure.

Technical Context

The MF1S7001XDUD/V1 implements a fully integrated RF interface per ISO/IEC 14443A, including rectifier, voltage regulator, clock regenerator, and Power-On Reset - requiring no external components beyond an antenna coil. Its digital control unit manages anticollision, three-pass authentication, and memory operations using the CRYPTO1 stream cipher.

Memory is partitioned into 40 sectors (32 with 4 blocks, 8 with 16 blocks), each ending in a trailer block containing two programmable keys and access bits. Value blocks support atomic increment/decrement/transfer with built-in backup management and triple-value storage for error resilience.

Key Specifications

Pinout & Package

MF1S7001XDUD/V1 is supplied as a bumped die on 8-inch wafer (120 μm thickness, film frame carrier), intended for integration into contactless modules (e.g., MOA4/MOA8) or inlays. It has no traditional package pins; electrical connection is made exclusively via two antenna terminals (LA and LB).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MF1S7001XDUD/V1, MF1S7000XDA4/V1 offers identical core functionality in a ready-to-use module format - reducing antenna design risk but limiting mechanical integration flexibility - while MF1S7031XDUD/V1 trades UID uniqueness for cost reduction in non-critical identification use cases.

Availability

MF1S7001XDUD/V1 is available at Aetrix Electronics and suitable for public transportation ticketing, physical access control, and electronic toll collection requiring stable component supply and long-term lifecycle support.

Supply support for MF1S7001XDUD/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 consumer applications.

The MF1S7001XDUD/V1 belongs to the MIFARE Classic EV1 family - designed specifically for mainstream contactless smart card applications demanding proven security, ISO/IEC 14443A interoperability, and fast transaction performance in high-volume deployments.

FAQ

What is the primary function of the MF1S7001XDUD/V1 in a contactless system?

The MF1S7001XDUD/V1 serves as a secure contactless smart card IC compliant with ISO/IEC 14443 Type A. It stores credentials and application data in 4 kB EEPROM, performs CRYPTO1-based mutual authentication, and executes memory operations like read, write, increment, and decrement - all powered wirelessly via RF field coupling. Its role is foundational in systems such as transit ticketing and access control.

Does the MF1S7001XDUD/V1 support both 7-byte UID and 4-byte NUID variants?

No - the MF1S7001XDUD/V1 is specifically configured with a factory-programmed 7-byte UID. The 4-byte NUID variant is designated by different part numbers (e.g., MF1S7031XDUD/V1). UID type is fixed at wafer fabrication and cannot be altered post-production; selecting MF1S7001XDUD/V1 guarantees 7-byte uniqueness per device.

How does the MF1S7001XDUD/V1 handle multiple cards in the same RF field?

The MF1S7001XDUD/V1 implements ISO/IEC 14443-3 anticollision using a deterministic cascade protocol. For its 7-byte UID, it supports two cascade levels (CL1 and CL2) to uniquely identify and select individual cards in overlapping fields. This ensures that readers can isolate and transact with one MF1S7001XDUD/V1 at a time without interference - critical for high-throughput transit gates.

What memory organization does the MF1S7001XDUD/V1 use, and why does it matter for application design?

The MF1S7001XDUD/V1 organizes its 4 kB EEPROM into 40 sectors: 32 sectors of 4 blocks (16 bytes each) and 8 sectors of 16 blocks. Each sector ends with a trailer block holding two keys and access bits. This structure enables application-level security partitioning - for example, assigning separate sectors to fare balance, loyalty points, and personal ID - with independent key control and access policies per sector.

Is the MF1S7001XDUD/V1 compatible with existing MIFARE Classic infrastructure?

Yes - the MF1S7001XDUD/V1 is part of the MIFARE Classic EV1 family and maintains full command-set, timing, and protocol compatibility with legacy MIFARE Classic 1K/4K systems. It responds to standard ISO/IEC 14443A commands (e.g., REQA, SELECT, AUTH, READ, WRITE) and uses the same CRYPTO1 cipher, allowing seamless integration into deployed readers and middleware without firmware updates.