NXP Semiconductors SL3S1214FUD/BG1V

Overview

SL3S1214FUD/BG1V from NXP Semiconductors is a UHF RFID IC compliant with EPC Gen2 v2.0, designed for passive UHF tag inlays in retail and supply chain applications. It delivers -21 dBm read sensitivity, -16 dBm write sensitivity, 32-bit user memory, pre-serialized 96-bit EPC, and integrated Tag Power Indicator for optimized encoding in dense tag environments.

For engineers reviewing the SL3S1214FUD/BG1V datasheet, SL3S1214FUD/BG1V pinout, SL3S1214FUD/BG1V application, or SL3S1214FUD/BG1V equivalent, key selection considerations include its bumped-die wafer form factor (120 μm thickness, 7 μm polyimide spacer), RF1/RF2 antenna interface, parallel encoding capability (100 items in 60 ms), and Product Status Flag support for EAS functionality.

Technical Context

The SL3S1214FUD/BG1V implements a fully EPCglobal Class-1 Generation-2 compliant air interface at 840–960 MHz, with analog RF front-end including rectifier, voltage regulator, and backscatter modulation transistor. Its digital control block handles anticollision, protocol state machines, EEPROM access, and configuration word management at EPC bank address 200h.

Memory architecture includes four banks: reserved (64-bit kill/access passwords), EPC (up to 128-bit, with pre-serialized 96-bit EPC), TID (96-bit factory-locked, including 48-bit unique serial number), and user memory (32-bit). All features-including Parallel Encoding, Tag Power Indicator, and PSF-are activated via standard EPC READ/WRITE/SELECT commands without custom firmware.

Key Specifications

Pinout & Package

SL3S1214FUD/BG1V is supplied as a bumped die on an 8-inch, 120 μm-thick silicon wafer with 7 μm polyimide spacer. Die dimensions are 0.490 mm × 0.445 mm. Four gold bumps (60 × 60 μm) provide electrical connection: RF1 and RF2 serve as symmetric antenna terminals; TP1 and TP2 are isolated test pads not connected to internal circuitry.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SL3S1213FUD/BG1V, SL3S1214FUD/BG1V adds critical encoding efficiency and EAS capabilities; compared with SL900A1TTBG, it offers superior RF sensitivity, smaller footprint, and lower system complexity for standard retail tagging-making SL3S1214FUD/BG1V the preferred choice for high-volume, cost-sensitive UHF inlay manufacturing.

Availability

SL3S1214FUD/BG1V is available at Aetrix Electronics and suitable for retail inventory management, supply chain visibility, and electronic article surveillance requiring stable component supply across global wafer procurement cycles.

Supply support for SL3S1214FUD/BG1V 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 markets, with deep expertise in RFID, NFC, and wireless identification technologies.

The UCODE product line-including SL3S1214FUD/BG1V-is engineered specifically for high-performance, globally compliant UHF RFID inlays targeting retail, fashion, and fast-moving consumer goods supply chains.

FAQ

What is the package type and physical form of SL3S1214FUD/BG1V?

SL3S1214FUD/BG1V is supplied as a bare die on an 8-inch silicon wafer, with 120 μm thickness and 7 μm polyimide spacer. It features four gold bumps (RF1, RF2, TP1, TP2) arranged in non-diagonal corners. The die measures 0.490 mm × 0.445 mm and is intended for flip-chip mounting onto antenna substrates-not packaged in plastic or leaded formats.

Does SL3S1214FUD/BG1V support EPC Gen2 v2.0, and what mandatory commands does it implement?

Yes, SL3S1214FUD/BG1V is EPC Gen2 v2.0 ready and implements all mandatory commands from EPCglobal Class-1 Generation-2 specification v1.2.0, including (Perma)LOCK. It also supports optional commands Access and BlockWrite (32-bit), with no custom command extensions required to use its full feature set.

How does the Tag Power Indicator function in SL3S1214FUD/BG1V, and what is its design impact?

The Tag Power Indicator in SL3S1214FUD/BG1V is an action bit at EPC address 204h. When selected, it triggers an internal power check: tags receiving ≥-15 dBm RF power respond to the SELECT, others do not. This enables precise write targeting in dense inlay rolls or stacked labels-preventing miswrites and improving encoder throughput without hardware modifications.

Can SL3S1214FUD/BG1V be used with single-slit antenna designs, and why is that beneficial?

Yes, SL3S1214FUD/BG1V supports single-slit antenna assembly because TP1 and TP2 are electrically isolated and may be safely shorted to RF1 and RF2. This eliminates the need for two independent antenna slits, simplifying mechanical design, improving assembly yield, and enabling finer impedance tuning via increased input capacitance-especially valuable in ultra-thin or flexible label constructions.

What memory organization does SL3S1214FUD/BG1V use, and how is the 32-bit user memory accessed?

SL3S1214FUD/BG1V organizes memory into four banks: Reserved (64-bit), EPC (up to 128-bit), TID (96-bit factory-locked), and User Memory (32-bit, Bank 11). The 32-bit user memory resides at logical addresses 00h–1Fh in Bank 11 and is accessed via standard EPC Gen2 READ/WRITE commands after unlocking the memory bank with the 32-bit access password.

Is SL3S1214FUD/BG1V suitable for Electronic Article Surveillance (EAS), and how is PSF implemented?

Yes, SL3S1214FUD/BG1V includes a Product Status Flag (PSF) bit at EPC address 20Fh-a permanent, writable bit in the configuration word. Readers activate EAS by issuing a SELECT command targeting this bit; subsequent inventory rounds return only tags with PSF = 1. No backend database or external sensor is needed, making SL3S1214FUD/BG1V ideal for self-contained anti-theft tagging.