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STMicroelectronics ST25TA512B-AC6G5
- Part No.:
- ST25TA512B-AC6G5
- Manufacturer:
- STMicroelectronics
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- Die
- Datasheet:
-
ST25TA512B-AC6G5.pdf
- Description:
- IC RFID TRANSP 13.56MHZ WAFER
- Quantity:
- Payment:
- Shipping:
Inventory:2,660
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Product details
Overview
ST25TA512B-AC6G5 from STMicroelectronics is an NFC Forum Type 4 Tag IC compliant with ISO/IEC 14443 Type A, featuring 512-bit (64-byte) user EEPROM, 7-byte UID, 128-bit password protection, and TruST25™ digital signature for anti-cloning. It operates contactlessly at 13.56 MHz with 106 kbps data rate and internal 50 pF tuning capacitance, deployed in smart labels, product authentication tags, and industrial asset tracking systems.
For engineers reviewing the ST25TA512B-AC6G5 datasheet, ST25TA512B-AC6G5 pinout, ST25TA512B-AC6G5 application, or ST25TA512B-AC6G5 equivalent, key selection criteria include NFC Type 4 compliance, NDEF file support, UID uniqueness, password-protected memory access, and TruST25™ origin verification - all critical for secure, standards-based RFID tagging in consumer and industrial deployments.
Technical Context
The ST25TA512B implements a fully autonomous analog front-end tuned to 13.56 MHz via integrated 50 pF capacitance, eliminating external matching components. Its digital unit supports NFC Forum Type 4 Tag protocol stack including Capability Container (CC), NDEF, and proprietary System file structures, with full ISO/IEC 14443 Type A command set compliance.
Memory management enforces strict NDEF file access control via dual 128-bit passwords (read/write), configurable protection modes (UNPROTECTED/PROTECTED/FORBIDDEN), and anti-tearing 20-bit event counter. The TruST25™ digital signature is generated on-chip during manufacturing and verified via RF commands to authenticate chip origin and prevent counterfeiting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| NFC Compliance | NFC Forum Type 4 Tag certified; ensures interoperability with all NFC-enabled smartphones and readers supporting Type 4. |
| Protocol Standard | ISO/IEC 14443 Type A; enables reliable communication with legacy and modern RFID infrastructure without protocol translation. |
| User Memory Size | 512-bit (64-byte) EEPROM; stores compact NDEF messages such as URLs, serial numbers, or cryptographic keys in constrained space. |
| Data Retention | 200 years; guarantees long-term integrity of stored identifiers and configuration data across product lifecycles. |
| Endurance | 1 million erase-write cycles; supports frequent reprogramming in dynamic tagging applications like reusable logistics labels. |
| UID Length | 7-byte unique identifier; provides globally unique chip identity for inventory, traceability, and anti-counterfeit verification. |
| Digital Signature | TruST25™ on-chip signature; cryptographically binds chip identity to manufacturer origin, enabling hardware-rooted trust in supply chain systems. |
Pinout & Package
UFDFPN5 package (1.7 × 1.4 mm, 0.5 mm pitch) with exposed thermal pad; optimized for ultra-thin label and inlay integration. No GPO or VDCG pins - this variant lacks general-purpose output functionality.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC0 / AC1 | Antenna coil interface | Differential RF input pair; connects directly to printed antenna traces with no DC bias or external tuning required. |
| VSS | Ground reference | Common return path for internal analog/digital blocks; must be connected to PCB ground plane for stable RF operation. |
Key Features
| Feature | Design Value |
|---|---|
| NDEF File Support | Fully compliant with NFC Forum Type 4 Tag Application; enables standardized storage and exchange of URIs, text, or smart-poster data. |
| Password Protection | Independent 128-bit read/write passwords; prevents unauthorized memory access while allowing selective field-service updates. |
| Anti-Tearing Counter | 20-bit event counter with hardware-level consistency guarantee; tracks NDEF operations even during RF interruption or power loss. |
| Chaining Capability | Supports multi-command read/write sequences up to 256 bytes read or 54 bytes write per command; reduces host transaction overhead. |
| TruST25™ Authentication | On-chip digital signature generation and verification; delivers tamper-resistant proof of genuine ST-manufactured silicon. |
Applications
| Smart Product Labels | Industrial Asset Tracking |
|---|---|
|
Use Scenario: Embedded in packaging or product housing to store model number, firmware version, and calibration data accessible via smartphone NFC scan. IC Role / Device Role / Timing Role: Passive NFC tag IC providing secure, battery-free data interface between physical product and digital service platform. Use Value: Enables instant device onboarding, warranty validation, and field-upgrade eligibility checks without requiring dedicated readers or network connectivity. |
Use Scenario: Mounted on machinery, tools, or test equipment to log maintenance history, operator assignments, and usage metrics. IC Role / Device Role / Timing Role: Tamper-resistant memory node storing time-stamped operational events synchronized to NFC reader session timing. Use Value: Eliminates manual logbooks by enabling auditable, password-protected record updates directly from handheld NFC scanners on factory floor. |
| Secure Access Credentials | Medical Device Authentication |
|
Use Scenario: Integrated into employee ID badges or door-access tokens to store encrypted credentials validated against central security system. IC Role / Device Role / Timing Role: Cryptographically authenticated identity carrier using TruST25™ signature and UID binding to prevent credential cloning. Use Value: Provides hardware-enforced credential integrity without backend PKI infrastructure - essential for air-gapped or low-connectivity facilities. |
Use Scenario: Affixed to infusion pumps, diagnostic sensors, or sterilization trays to verify OEM authenticity and firmware revision before clinical use. IC Role / Device Role / Timing Role: Medical-grade secure element delivering immutable device provenance and regulatory compliance metadata via NFC handshake. Use Value: Meets IEC 62304 and FDA UDI requirements by ensuring only authorized, calibrated devices enter patient care environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NFC Type 4 tag applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NT3H2111W0FHKH | 1-Kbit EEPROM, integrated 13.56 MHz tuning, but no TruST25™ signature or event counter. | Lacks hardware-rooted origin verification; suitable for cost-sensitive non-security-critical labeling. | Select when NDEF capacity >64 bytes is needed and cryptographic anti-cloning is not required. |
| ST25DV02K-IER | I²C + NFC dual-interface; 2-Kbit EEPROM; supports dynamic memory update via wired interface alongside RF access. | Enables offline programming and real-time parameter updates - incompatible with pure passive-only workflows. | Choose when field-serviceable memory updates via microcontroller connection are mandatory alongside NFC readout. |
Compared with NT3H2111W0FHKH and ST25DV02K-IER, the ST25TA512B-AC6G5 uniquely balances minimal footprint, certified NFC Type 4 compliance, and hardware-enforced origin trust - making it optimal for high-integrity, space-constrained passive tagging where security and standardization outweigh raw memory size or dual-interface flexibility.
Availability
ST25TA512B-AC6G5 is available at Aetrix Electronics and suitable for smart labels, industrial asset tracking, secure access credentials, and medical device authentication requiring stable component supply and long-lifecycle support.
Supply support for ST25TA512B-AC6G5 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and secure connectivity solutions for industrial, automotive, and consumer markets.
The ST25 family targets secure, standards-compliant NFC tagging with emphasis on anti-counterfeiting, data integrity, and seamless smartphone interoperability - engineered specifically for trusted identification in IoT edge nodes and regulated industries.
FAQ
Does ST25TA512B-AC6G5 support GPO (General Purpose Output)?
No. The ST25TA512B-AC6G5 variant does not include GPO functionality. Only ST25TA02KB-D and ST25TA02KB-P models feature GPO pins (open-drain or CMOS). This part is a pure NFC tag IC with antenna interface (AC0/AC1), ground (VSS), and no additional I/O terminals - confirmed by its UFDFPN5 pinout and datasheet DS12365 Rev 2 Section 4.2 exclusion.
What is the actual usable NDEF memory size for ST25TA512B-AC6G5?
The ST25TA512B provides 512 bits (64 bytes) of user EEPROM, structured as an NDEF file with 2-byte message length header. After accounting for the fixed 15-byte Capability Container (CC) file and reserved System file space, the maximum writable NDEF payload is 54 bytes per single WriteBinary command - consistent with Table 4 and Section 3.1.3 of DS12365.
How is TruST25™ digital signature verified in-system?
TruST25™ signature is verified using the ST25-specific RF command sequence defined in DS12365 Section 6.9.1: the host issues a "Get Signature" command (CLA=0x00, INS=0xC0), and the IC returns a 128-bit signature derived from UID and manufacturing secrets. No external key or certificate is needed - verification occurs entirely within the NFC reader's secure channel.
Can ST25TA512B-AC6G5 be used with non-NFC Forum readers?
Yes - it supports full ISO/IEC 14443 Type A protocol at 106 kbps, so it works with any ISO-compliant 13.56 MHz reader, including legacy RFID infrastructure. However, NDEF formatting, CC file structure, and TruST25™ commands require NFC Forum–aware hosts; basic read/write of raw memory is possible via proprietary commands only.
ST25TA512B-AC6G5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ST25T
- Package/Case:
- Die
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- RFID Transponder
- Frequency:
- 13.56MHz
- Standards:
- ISO 14443, NFC
- Interface:
- -
- Voltage - Supply:
- 1.65V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Wafer
ST25TA512B-AC6G5 FAQ
1.How can I place an order for ST25TA512B-AC6G5 through Aetrix?
Please submit a Request for Quotation (RFQ) for ST25TA512B-AC6G5 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ST25TA512B-AC6G5 reliable?
The price and inventory of ST25TA512B-AC6G5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST25TA512B-AC6G5 is usually 5 days.
3.What payment methods are accepted for ST25TA512B-AC6G5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST25TA512B-AC6G5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST25TA512B-AC6G5?
ST25TA512B-AC6G5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST25TA512B-AC6G5 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ST25TA512B-AC6G5?
For technical support, including ST25TA512B-AC6G5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST25TA512B-AC6G5 requirements.
6.How does Aetrix verify that ST25TA512B-AC6G5 is sourced from the original manufacturer or authorized distributors?
All ST25TA512B-AC6G5 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ST25TA512B-AC6G5 meets industry standards.
7.What is the process for return or replacement of ST25TA512B-AC6G5?
All ST25TA512B-AC6G5 units undergo pre-shipment inspection (PSI). If there is an issue with ST25TA512B-AC6G5, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ST25TA512B-AC6G5 part is unused and in its original packaging.
Return procedure for ST25TA512B-AC6G5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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