NXP UCODE 8 RFID Card Technical Specifications

The NXP UCODE 8 IC provides the core RFID communication and memory functions of the card. The following chip specifications distinguish UCODE 8 from UCODE 8m, helping buyers select the correct configuration for their project.

Important: UCODE 8 has 128-bit EPC memory and no user memory. UCODE 8m has 96-bit EPC memory and 32-bit user memory. These two chip versions should not be described as having identical memory configurations.

What Is the Difference Between NXP UCODE 8 and UCODE 8m?

NXP UCODE 8 and UCODE 8m belong to the same chip family, but their memory configurations differ. Buyers should select the chip according to the data storage requirements of their RFID application.

Which version should you choose?

lChoose UCODE 8 when your project requires 128-bit EPC memory and does not require additional user memory.

lChoose UCODE 8m when your application needs 32-bit user memory and can work with 96-bit EPC memory.

The memory configuration should be confirmed before ordering, particularly when the card is integrated into an existing RFID reader system or data-management platform.

Key Features of NXP UCODE 8 RFID Cards

1. High RFID Read Sensitivity

The UCODE 8 IC features a read sensitivity of -23 dBm and a write sensitivity of -18 dBm. These chip-level characteristics support RFID system designs requiring efficient identification and data communication.

2. EPC Gen2v2 Compatibility

UCODE 8 supports EPC Gen2v2 commands, providing compatibility with UHF RFID systems designed around the corresponding air-interface standard.

3. Factory-Locked TID

The chip includes a 96-bit factory-locked Tag Identifier, including a 48-bit unique serial number. This provides a chip-level identifier for RFID system management.

4. Memory and Access Control Functions

UCODE 8 includes a 32-bit access password and a 32-bit kill password. Its memory architecture supports EPC-based identification and access-control functions.

5. Broadband UHF Design

The UCODE 8 family uses a broadband design intended to support UHF RFID applications across different regional frequency environments. Actual operating channels must comply with local radio regulations.

Applications of NXP UCODE 8 RFID Cards

NXP UCODE 8 RFID cards are suitable for projects that use UHF RFID technology for identification, inventory visibility and supply chain operations.

Retail Inventory Management

Support item identification, stocktaking and inventory visibility in retail operations. UHF RFID readers can identify multiple tagged items within a reading field, depending on the system and installation environment.

Warehouse and Logistics

Use UHF RFID cards for identification and tracking workflows in warehouses, distribution centers and logistics operations.

Supply Chain Management

Connect RFID identification data with inventory and supply chain systems to support product movement records and operational visibility.

Asset Identification

Assign RFID identities to equipment, reusable assets and other items that require electronic identification and inventory management.

Brand and Product Management

Integrate RFID identification into product management workflows and brand-specific identification systems.

OEM and Custom NXP UCODE 8 RFID Card Manufacturing

Kaisere provides customized UHF RFID card manufacturing for distributors, brands, system integrators and enterprise buyers.

Customization options include:

Customization Support

lCustom card artwork and logo printing

lChip and card specification selection

lEPC data encoding

lCustomized card surface and material

lBarcode and QR code printing

lProject-specific packaging

lSample production before bulk orders

Share your card design, chip requirements, encoding format and estimated order quantity. Our team can help define the production specifications for your RFID project.

NXP UCODE 8 RFID Card Manufacturing Process

Consistent RFID card production requires control over chip handling, antenna integration, card construction, printing and final inspection.

Kaisere's RFID card manufacturing workflow includes:

1. Raw Material Preparation — Prepare card materials and production components according to the confirmed specification.

2. Chip and Component Inspection — Check incoming RFID chips and relevant components.

3. Antenna Production — Prepare the antenna structure according to the card design.

4. Chip Embedding — Integrate the RFID chip with the antenna.

5. Card Lamination — Complete card construction and lamination.

6. Printing and Surface Finishing — Apply the approved artwork and finishing process.

7. RFID Function Testing — Check RFID communication and encoding performance.

8. Final Quality Inspection — Inspect card appearance, dimensions and order specifications.

9. Packaging and Shipment — Pack finished cards according to the agreed delivery requirements.

RFID Card Quality Control and Performance Testing

For B2B RFID projects, product consistency is as important as chip specifications. Kaisere applies inspection procedures throughout the manufacturing process to help maintain product quality and order consistency.

Our quality-control workflow covers:

lIncoming Material Inspection: Check card materials, chips and production components.

lChip and Antenna Inspection: Check component integration and antenna-related production quality.

lRFID Function Testing: Test RFID communication and reading performance.

lEncoding Inspection: Check EPC data programming and encoding accuracy.

lPrinting Inspection: Inspect artwork, color, logo position and surface quality.

lFinal Inspection: Check finished cards against the confirmed order specifications before shipment.

For projects with specific reader models, operating environments or encoding requirements, buyers can provide their technical requirements before sample production.

RFID Card Manufacturer with In-House Production Capability

Kaisere Technology is an RFID product manufacturer established in 2003, serving international customers with RFID card, tag, label, wristband and customized RFID product solutions.

Our manufacturing resources include:

l10,000㎡ factory area

l12 million+ RFID products monthly production capacity across the company

lMultiple RFID production lines

lRFID card manufacturing and customization capabilities

lExport experience serving customers in more than 100 countries

From prototype samples to volume orders, Kaisere supports B2B customers with product customization, manufacturing coordination and international order fulfillment.

Why Work with Kaisere?

lDirect manufacturer communication

lMultiple RFID product categories

lOEM and customized production

lQuality inspection throughout production

lInternational export experience

lSupport for distributors, brands and RFID system integrators

UCODE 8 Chip Availability and Project Supply Planning

NXP's official product information lists UCODE 8/8m (SL3S1205-15) as No Longer Manufactured. This is an important consideration for buyers planning new projects, repeat orders or long-term deployments.

NXP Semiconductors+1

Kaisere supports UCODE 8 RFID card inquiries by coordinating the required chip configuration, order quantity, production specifications and delivery schedule.

Before placing a bulk order, buyers should confirm:

lRequired chip version: UCODE 8 or UCODE 8m

lRequired EPC and user memory configuration

lRequired chip quantity and order volume

lChip batch and traceability documentation

lSample approval and RFID performance requirements

lExpected delivery schedule and repeat-order requirements

If a project requires a long-term supply plan, alternative UHF chip options can be discussed separately. Any alternative chip must be reviewed against the reader system, memory configuration, protocol requirements and application performance before adoption.

Contact Kaisere to discuss current UCODE 8 card availability and your project requirements.

Global Shipping and B2B RFID Card Order Support

Kaisere serves international RFID customers, including distributors, brands, RFID system integrators and enterprise buyers.

We support the order process from specification communication to finished-product delivery.

For an efficient quotation, please provide:

lChip model and memory requirements

lCard material and dimensions

lPrinting artwork or logo file

lEPC encoding and data requirements

lEstimated order quantity

lSample or mass-production requirements

lDestination country and preferred delivery schedule

Our team can use these details to prepare a product proposal and quotation based on your project requirements.

Quality Management and Product Compliance

Kaisere has ISO, CE and RoHS certificates. Relevant certification and compliance documents can be discussed according to the product, material, destination market and project requirements.

For procurement teams, we recommend confirming the specific document required for the finished RFID card, including applicable material declarations, test reports or product compliance documents.

This helps ensure that the selected card configuration meets the technical and regulatory requirements of the intended application and market.

Frequently Asked Questions About NXP UCODE 8 RFID Cards

Q1: What is an NXP UCODE 8 RFID card?

An NXP UCODE 8 RFID card is a UHF RFID card using the NXP UCODE 8 IC. It supports EPC Gen2v2 communication and is designed for applications such as retail inventory management, logistics and asset identification.

Q2: What frequency does a UCODE 8 RFID card use?

It operates in the UHF RFID range of 860–960 MHz. The actual operating frequency depends on the regional radio regulations and RFID system configuration.

Q3: How much memory does UCODE 8 have?

UCODE 8 has 128-bit EPC memory, 96-bit factory-locked TID memory and no user memory.

Q4: What is the difference between UCODE 8 and UCODE 8m?

UCODE 8 provides 128-bit EPC memory and 0-bit user memory. UCODE 8m provides 96-bit EPC memory and 32-bit user memory. Both have 96-bit TID memory.

Q5: Does UCODE 8 support EPC Gen2v2?

Yes. NXP UCODE 8 supports EPC Gen2v2 and is associated with the ISO/IEC 18000-6C UHF RFID air-interface standard.

Q6: Can Kaisere customize UCODE 8 RFID cards?

Yes. Customization options include card materials, printing, surface finishes, logo design, EPC encoding, barcode and QR code printing, and packaging.

Q7: Can I order samples before bulk production?

Yes. Sample arrangements can be discussed before mass production so that card appearance, specifications and RFID functionality can be reviewed.

Q8: What is the MOQ for UCODE 8 RFID cards?

MOQ depends on the chip configuration, card material, printing requirements and order quantity. Contact Kaisere with your specifications for a quotation.

Q9: Can Kaisere ship UCODE 8 RFID cards internationally?

Yes. Kaisere supports international B2B orders and global shipping. Delivery arrangements depend on order quantity, product specifications and destination.