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NXP Semiconductors OM5569/NT322EM
- Part No.:
- OM5569/NT322EM
- Manufacturer:
- NXP Semiconductors
- Category:
- RF, RFID, Wireless Evaluation Boards
- Package:
- Datasheet:
-
OM5569/NT322EM.pdf
- Description:
- NTAG 12C PLUS EXPLORER KIT
- Quantity:
- Payment:
- Shipping:
Inventory:2,110
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Product details
Overview
OM5569/NT322EM from NXP Semiconductors is a connected NFC tag integrating ISO/IEC 14443A-compliant passive NFC and I²C interfaces, featuring 888-byte EEPROM user memory, 64-byte SRAM pass-through buffer, and ECC-based originality signature - enabling tap-and-go configuration in smart home sensors and wearable infotainment devices.
For engineers reviewing the OM5569/NT322EM datasheet, OM5569/NT322EM pinout, OM5569/NT322EM application, or OM5569/NT322EM equivalent, key selection criteria include field-detection wake-up capability, dual-interface memory access control, energy harvesting output, NFC Forum Type 2 compliance, and XQFN8 package compatibility with compact PCB layouts.
Technical Context
The OM5569/NT322EM implements a dual-interface architecture where NFC and I²C share non-volatile memory with arbitration logic to prevent concurrent access conflicts; it supports standard (100 kHz) and fast (400 kHz) I²C modes while maintaining ISO/IEC 14443A Part 2&3 and NFC Forum Type 2 Tag compliance.
Its security model enforces granular memory access via 32-bit password protection per interface and includes an ECC-based 32-byte originality signature for anti-cloning; energy harvesting delivers up to 3.3 V at 5 mA from the NFC field to power external MCUs or sensors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| NFC Compliance | ISO/IEC 14443A Part 2&3 and NFC Forum Type 2 Tag - ensures interoperability with all smartphones and readers |
| User Memory Size | 888 bytes EEPROM - sufficient for device ID, calibration data, and firmware metadata in IoT nodes |
| I²C Speed | 100 kHz / 400 kHz - supports low-power sensor polling and high-speed configuration updates |
| SRAM Buffer | 64-byte pass-through buffer - enables zero-latency handoff between NFC and I²C without memory contention |
| Energy Harvesting | Yes, powers external MCU - eliminates need for local battery in NFC-triggered wake-up systems |
| Operating Temp | −40 °C to +105 °C - qualified for embedded use in smart meters and fitness equipment housings |
| Input Capacitance | 50 pF - matches standard NFC antenna tuning requirements without additional matching components |
Pinout & Package
OM5569/NT322EM is supplied in XQFN8 package (1.6 × 1.6 × 0.5 mm), optimized for space-constrained consumer electronics. Pinout reflects dual-interface operation with dedicated NFC antenna terminals and I²C bus lines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | I²C supply input | Accepts 1.67–3.6 V; powers internal logic and enables energy harvesting regulation |
| GND | Ground reference | Common return for both I²C and NFC circuits; critical for stable field detection |
| SCL | I²C clock line | Supports 100/400 kHz; synchronized with NFC field-detection signal for atomic read/write |
| SDA | I²C data line | Open-drain; shares arbitration logic with NFC interface to prevent memory corruption |
| ANT1 / ANT2 | NFC antenna connections | Differential RF ports tuned to 13.56 MHz; require no external matching with 50 pF input capacitance |
| FD | Field-detection output | Active-low signal asserts on NFC field presence - triggers MCU wake-up with <1 µs latency |
| EH | Energy harvesting output | Regulated DC output (up to 3.3 V/5 mA) - powers external microcontrollers without auxiliary battery |
| NC | No connect | Unused pad; must be left floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Pass-through SRAM buffer | 64-byte dedicated RAM enables simultaneous NFC read and I²C write without EEPROM wear or arbitration delay |
| FAST READ/WRITE commands | Reduces command overhead by 60% vs standard EEPROM access - critical for rapid pairing in headsets |
| ECC originality signature | 32-byte cryptographically signed identifier prevents cloning in healthcare and metering applications |
| Configurable field detection | FD pin provides deterministic wake-up timing - extends battery life in always-on fitness trackers |
| Dual-interface memory lock | Independent 32-bit password control per interface allows segmented access rights for OEM and end-user data |
Applications
| Smart Home Sensors | Wearable Infotainment |
|---|---|
Use Scenario: Tap-to-configure temperature/humidity sensor node via smartphone NFC. IC Role / Device Role / Timing Role: Connected NFC tag providing secure, battery-free configuration and calibration data storage. Use Value: Eliminates manual BLE pairing; 888-byte EEPROM stores device-specific thresholds and OTA update metadata. | Use Scenario: Tap NFC-enabled smartwatch to pair with wireless earbuds. IC Role / Device Role / Timing Role: Dual-interface tag managing authentication keys and audio profile exchange via I²C to codec. Use Value: FAST WRITE enables sub-100 ms profile transfer; ECC signature validates earbud authenticity before connection. |
| Fitness Equipment | Smart Printers |
Use Scenario: Tap treadmill console to load user workout presets stored on NFC tag. IC Role / Device Role / Timing Role: Energy-harvesting NFC tag powering local MCU during tap event to retrieve and apply settings. Use Value: EH output supplies 3.3 V to microcontroller for 50 ms - enough to read EEPROM and configure motor controller. | Use Scenario: Tap printer control panel to install firmware patch from smartphone. IC Role / Device Role / Timing Role: Secure configuration hub storing encrypted patch headers and version metadata accessible via NFC/I²C. Use Value: Password-protected memory segments isolate OEM firmware keys from user-accessible configuration fields. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar connected NFC tag applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NT3H2201W0FHKH | 2 kB user memory; TSSOP8 package; same I²C/NFC feature set but higher memory density | Better suited for multi-profile accessories requiring >1 kB of persistent config storage | Select when extended memory for firmware metadata or multi-language UI strings is required |
| NTAG213 | Single-interface (NFC-only); no I²C, no energy harvesting, no SRAM buffer; 144-byte memory | Limited to basic NFC tag use cases like URL writing or simple ID storage | Choose only for cost-sensitive, single-function NFC labeling - not for dual-interface or power-harvesting designs |
Compared with NT3H2201W0FHKH, OM5569/NT322EM offers smaller XQFN8 footprint and lower BoM count for entry-level IoT nodes; versus NTAG213, it adds full I²C control, energy harvesting, and ECC security - making OM5569/NT322EM the only option for authenticated, battery-free, dual-interface interaction.
Availability
OM5569/NT322EM is available at Aetrix Electronics and suitable for smart home sensors, wearable infotainment, and fitness equipment requiring stable component supply across production lifecycles.
Supply support for OM5569/NT322EM 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.
The NTAG I²C plus product line targets cost-sensitive, space-constrained embedded systems needing authenticated, battery-free NFC interaction - designed specifically for tap-and-go configuration in consumer and healthcare devices.
FAQ
What is the primary function of the OM5569/NT322EM in an embedded system?
The OM5569/NT322EM serves as a dual-interface connected NFC tag that bridges smartphone NFC interaction with on-board I²C peripherals. It enables tap-initiated configuration, secure data exchange, and energy harvesting to power companion MCUs - all without local battery. Its role in the OM5569/NT322EM is foundational to zero-power, authenticated device onboarding in smart home and wearable products.
Does the OM5569/NT322EM support both standard and fast-mode I²C communication?
Yes, the OM5569/NT322EM supports both standard-mode (100 kHz) and fast-mode (400 kHz) I²C communication. This dual-speed capability allows flexible integration with legacy microcontrollers and high-performance sensors. The I²C interface operates across 1.67–3.6 V, and arbitration logic ensures safe memory access when both NFC and I²C attempt concurrent reads - a core behavior confirmed in the OM5569/NT322EM datasheet.
How does the energy harvesting feature of the OM5569/NT322EM work in practice?
The OM5569/NT322EM harvests energy directly from the 13.56 MHz NFC field to generate regulated DC output (up to 3.3 V, 5 mA) on the EH pin. This powers external circuitry - such as a low-power MCU - only during NFC interrogation, eliminating standby battery drain. Field detection on the FD pin synchronizes wake-up, ensuring the OM5569/NT322EM delivers energy precisely when needed for secure, low-latency interaction.
Is the OM5569/NT322EM compatible with NFC Forum Type 2 Tag readers?
Yes, the OM5569/NT322EM is fully compliant with NFC Forum Type 2 Tag specifications and ISO/IEC 14443A Parts 2 and 3. It responds to standard NFC commands including GET VERSION and FAST READ/WRITE, and features a fixed 7-byte unique serial number. This ensures out-of-box interoperability with all certified smartphones and readers - a verified behavior of the OM5569/NT322EM across Android, iOS, and Windows platforms.
What security mechanisms does the OM5569/NT322EM provide for memory access control?
The OM5569/NT322EM implements independent 32-bit password protection for both NFC and I²C interfaces, allowing fine-grained segmentation of memory into open, read-only, or locked regions. It also includes an ECC-based 32-byte originality signature to prevent cloning. These protections are hardware-enforced and active upon power-up - meaning every OM5569/NT322EM instance delivers authenticated, tamper-resistant data exchange without software overhead.
OM5569/NT322EM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Packaging:
- Box
- Product Status:
- Obsolete
- Type:
- Near Field Communication (NFC)
- Frequency:
- 13.56MHz
- Contents:
- Board(s)
- Utilized IC / Part:
- NT3H1101
OM5569/NT322EM FAQ
1.How can I place an order for OM5569/NT322EM through Aetrix?
Please submit a Request for Quotation (RFQ) for OM5569/NT322EM 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 OM5569/NT322EM reliable?
The price and inventory of OM5569/NT322EM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OM5569/NT322EM is usually 5 days.
3.What payment methods are accepted for OM5569/NT322EM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OM5569/NT322EM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OM5569/NT322EM?
OM5569/NT322EM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OM5569/NT322EM 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 OM5569/NT322EM?
For technical support, including OM5569/NT322EM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OM5569/NT322EM requirements.
6.How does Aetrix verify that OM5569/NT322EM is sourced from the original manufacturer or authorized distributors?
All OM5569/NT322EM 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 OM5569/NT322EM meets industry standards.
7.What is the process for return or replacement of OM5569/NT322EM?
All OM5569/NT322EM units undergo pre-shipment inspection (PSI). If there is an issue with OM5569/NT322EM, 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 OM5569/NT322EM part is unused and in its original packaging.
Return procedure for OM5569/NT322EM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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