NXP Semiconductors SL2S1512FTBX

Overview

SL2S1512FTBX from NXP Semiconductors is a passive HF RFID IC compliant with ISO 18000-3 Mode 3 and EPC Class-1 HF standards, operating at 13.56 MHz. It delivers 512-bit user memory, 240-bit EPC memory, and 96-bit TID with 48-bit unique serial number. Its ultra-low-power analog RF interface enables contactless power harvesting and bidirectional data exchange in supply chain and healthcare tagging applications.

For engineers reviewing the SL2S1512FTBX datasheet, SL2S1512FTBX pinout, SL2S1512FTBX application, or SL2S1512FTBX equivalent, this page provides verified technical context, memory architecture details, anti-collision performance (up to 800 tags/s), EAS functionality, and XSON3 package-specific interface constraints - all confirmed for SL2S1512FTBX per Rev. 3.3 datasheet.

Technical Context

The SL2S1512FTBX implements a three-block architecture: Analog RF Interface (with on-chip voltage regulation, demodulation, and load modulation), Digital Controller (managing ISO 18000-3 Mode 3 protocol state machines and anti-collision arbitration), and EEPROM (storing EPC, TID, and user data). It operates without external power, extracting energy and clock from the reader's 13.56 MHz magnetic field.

Its RF interface supports DSB-ASK forward link (25–100 kbit/s) and ASK return link (53–848 kbit/s), with selectable subcarrier (424 kHz or 848 kHz) and FM0/Miller/Manchester baseband encoding. The chip enforces access control via 32-bit kill and access passwords, and supports EAS alarm toggling via ChangeConfigWord command on EPC Bank address 20Fh.

Key Specifications

Pinout & Package

SL2S1512FTBX is housed in an XSON3 (SOT1122) plastic extremely thin small outline package: 1.0 × 1.45 × 0.5 mm body, no leads, 3 terminals. The package is optimized for direct die bonding onto flexible antenna substrates in smart label manufacturing.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar passive HF RFID tag IC applications.

Compared with SL2S1412FTB and SL2S1612FTB, SL2S1512FTBX provides the industry-standard 23.5 pF input capacitance - simplifying antenna design, reducing component count, and ensuring consistent performance across global HF reader ecosystems without retuning.

Availability

SL2S1512FTBX is available at Aetrix Electronics and suitable for healthcare supply chain management, medical lab automation, and document tracking applications requiring stable component supply, long-term lifecycle assurance, and full traceability through wafer-level sourcing.

Supply support for SL2S1512FTBX 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, with core expertise in RFID, NFC, automotive, and secure microcontrollers.

The ICODE product family - including SL2S1512FTBX - was designed specifically for high-reliability passive HF RFID tagging in demanding industrial, healthcare, and logistics environments, emphasizing anti-collision robustness, memory security, and ultra-low-power RF coupling.

FAQ

What is the primary RF standard compliance for SL2S1512FTBX?

SL2S1512FTBX fully complies with ISO 18000-3 Mode 3 and EPC Class-1 HF v2.0.3 standards. This dual compliance ensures interoperability with global HF RFID infrastructure, including commercial readers used in supply chain, healthcare, and retail systems. The SL2S1512FTBX implements mandatory commands (Select, BeginRound, ACK, READ, WRITE, KILL) and optional features (Access, BlockPermalock) as defined in both specifications - verified in Section 9.3 and Table 13 of the Rev. 3.3 datasheet.

How does SL2S1512FTBX derive power and clock in passive operation?

SL2S1512FTBX derives all operating power and system clock from the reader's 13.56 MHz magnetic field via inductive coupling through its LA and LB terminals. The on-chip analog RF interface rectifies the RF signal to generate VDD and extracts the clock signal directly from the carrier - eliminating need for batteries or external power sources. This enables true passive operation up to 1.5 m gate width, as confirmed in Section 9.1 and Table 16 of the datasheet.

What memory banks are implemented in SL2S1512FTBX and how are they allocated?

SL2S1512FTBX implements four standardized memory banks: Bank 00 (64-bit reserved for kill/access passwords), Bank 01 (240-bit EPC), Bank 10 (96-bit TID with 48-bit unique serial number), and Bank 11 (512-bit user memory). Memory addresses begin at zero per bank, with initial content factory-set (e.g., all 00h for unlocked memory). This allocation follows EPCglobal Tag Data Standards and is detailed in Table 5 and Section 10.1 of the datasheet.

Does SL2S1512FTBX support Electronic Article Surveillance (EAS) functionality?

Yes, SL2S1512FTBX supports EAS via a dedicated EAS Alarm bit located at EPC Bank address 20Fh. This bit is toggled using the ChangeConfigWord command, and tags with EAS Alarm = 1 respond uniquely during inventory rounds initiated by a specific Select + BeginRound + ACK sequence. No backend database is required - EAS operates autonomously, as specified in Sections 2.1, 11.7.1, and 11.8.1 of the datasheet.

What is the package type and pin configuration of SL2S1512FTBX?

SL2S1512FTBX uses the XSON3 (SOT1122) package: 1.0 × 1.45 × 0.5 mm body, no leads, 3 terminals. Pin 1 is LB (antenna RF input), Pin 2 is LA (antenna RF input), and Pin 3 is n.c. (not connected). The 23.5 pF typical input capacitance between LA and LB defines resonant tank tuning - confirmed in Table 1 (Ordering Information) and Table 2 (Pin Description) of the Rev. 3.3 datasheet.