NXP Semiconductors SLRC40001T/OFE,112

Overview

SLRC40001T/OFE,112 from NXP Semiconductors is a highly integrated 13.56 MHz contactless reader IC supporting ICODE1 and ISO/IEC 15693 protocols. It integrates transmitter, receiver, digital control, and 64-byte FIFO buffer in a single SO32 package, enabling direct antenna drive up to 100 mm proximity range without external active circuitry.

For engineers reviewing the SLRC40001T/OFE,112 datasheet, SLRC40001T/OFE,112 pinout, SLRC40001T/OFE,112 application, or SLRC40001T/OFE,112 equivalent, key selection factors include parallel microprocessor interface auto-detection, independent analog/digital/transmitter power domains, 13.56 MHz oscillator buffer with low phase jitter, programmable timer, and hardware CRC generation for transponder communication integrity.

Technical Context

The SLRC40001T/OFE,112 implements a fully integrated analog front-end with dual transmitter outputs (TX1/TX2) capable of driving resonant antennas directly, and a robust demodulation/decoding path optimized for ICODE1 and ISO/IEC 15693 label responses. Its digital module handles framing, error detection (CRC), and command sequencing with automatic protocol layer support.

It features a flexible parallel interface supporting three modes-separate read/write strobes, common strobe, and EPP handshake-with automatic detection after reset. Internal address latch (ALE/AS) and IRQ line enable seamless integration with 8-bit microprocessors while maintaining full control over timing-critical RF operations.

Key Specifications

Pinout & Package

SLRC40001T/OFE,112 is housed in a plastic small outline package (SO32) with 32 leads and 7.5 mm body width (SOT287-1). The package provides separate power and ground pins for analog, digital, and transmitter domains to minimize coupling and ensure RF stability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SLRC40001T/OFE,112, the SLRC61000T/OFE,112 adds an ARM Cortex-M0 core and broader protocol coverage but increases complexity and footprint, while the PN5120A0HN/C1,118 offers NFC Forum certification and lower active power at the cost of reduced native range and external RF component dependency.

Availability

SLRC40001T/OFE,112 is available at Aetrix Electronics and suitable for electronic payment systems, access control systems, and banking terminals requiring stable component supply across long production lifecycles.

Supply support for SLRC40001T/OFE,112 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 IoT applications, with deep expertise in RFID and NFC technologies.

The SLRC40001T/OFE,112 belongs to NXP's ICODE reader IC product line, designed specifically for high-reliability, medium-range (up to 100 mm) contactless identification systems operating at 13.56 MHz in industrial and infrastructure applications.

FAQ

What communication protocols does the SLRC40001T/OFE,112 support?

The SLRC40001T/OFE,112 natively supports all layers of the ICODE1 and ISO/IEC 15693 protocols, including modulation, demodulation, framing, and CRC generation/validation. It does not support ISO/IEC 14443 or FeliCa out of the box; those require different NXP ICs like the PN512 or SLRC610 series. Protocol selection is handled entirely in hardware with no firmware overhead.

Does the SLRC40001T/OFE,112 require external components to drive a 100 mm antenna?

No, the SLRC40001T/OFE,112 transmitter module (TX1/TX2) can directly drive a properly tuned antenna for up to 100 mm proximity range without additional active circuitry. Only passive matching components (capacitors, inductors) and a 13.56 MHz crystal are required. The datasheet confirms this capability in Section 2 and Figure 1 block diagram.

How does the SLRC40001T/OFE,112 interface with an 8-bit microprocessor?

The SLRC40001T/OFE,112 uses a flexible parallel 8-bit interface with auto-detection of three modes: separate read/write strobes (NWR/NRD), common strobe (R/NW/NDS), or EPP handshake (nWrite/nDStrb/nAStrb). It includes ALE/AS, IRQ, and address lines A0–A2, eliminating need for glue logic or interface translation ICs in most designs.

What is the function of the VMID pin on the SLRC40001T/OFE,112?

The VMID pin on the SLRC40001T/OFE,112 provides an internal reference voltage (VDD/2) used by analog circuits including the receiver and oscillator. It must be decoupled to ground with a 100 nF capacitor as specified in Table 2 and Section 7.1 to ensure stable operation and low-noise performance in the 13.56 MHz RF path.

Can the SLRC40001T/OFE,112 operate with a single 3.3 V supply?

No - the SLRC40001T/OFE,112 requires three independent 3.3 V supplies: DVDD for digital logic, AVDD for analog/oscillator circuits, and TVDD for the transmitter output stage. This separation is mandatory to prevent noise coupling and ensure RF stability; sharing supplies violates the recommended power architecture in Section 7.1 and Figure 1.