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NXP Semiconductors CLRC66303HNK
- Part No.:
- CLRC66303HNK
- Manufacturer:
- NXP Semiconductors
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- -
- Datasheet:
-
CLRC66303HNK.pdf
- Description:
- CL READER IC'S
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Inventory:2,815
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Product details
Overview
CLRC66303HNK from NXP Semiconductors is a high-performance multi-protocol NFC frontend IC supporting ISO/IEC 14443A/B, FeliCa (JIS X 6319-4), ISO/IEC 15693, ISO/IEC 18092 P2P passive initiator, and EPC Class-1 HF modes. It delivers up to 848 kbit/s transfer speed for MIFARE Classic, integrates a 512-byte FIFO buffer, and operates from 2.5 V to 5.5 V. It is deployed in secure access control readers requiring robust card detection and low-power operation.
For engineers reviewing the CLRC66303HNK datasheet, CLRC66303HNK pinout, CLRC66303HNK application, or CLRC66303HNK equivalent, this page provides verified technical context, real-world interface configurations, confirmed operating distances up to 12 cm with tuned antennas, and validated alternative options for NFC reader design continuity.
Technical Context
The CLRC66303HNK implements dual transmitter outputs (TX1/TX2) and differential receiver inputs (RXP/RXN) for optimized 13.56 MHz RF front-end performance, with integrated PLL deriving system clock from a 27.12 MHz crystal. Its analog interface handles full ASK modulation and subcarrier load modulation demodulation per ISO/IEC 14443-A/B and FeliCa standards.
Digital functionality includes hardware-accelerated MIFARE Classic encryption, dedicated SAM I²C interface, and flexible host connectivity via SPI (up to 10 Mbit/s), UART (RS-232 level, up to 1228.8 kBd), or I²C (Fast-mode Plus, up to 1000 kBd). The CLRC66303HNK variant adds enhanced Low-Power Card Detection (LPCD) register control (LPCD_OPTIONS) and optimized Load Protocol settings for small-antenna designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5 V to 5.5 V - enables direct integration with 3.3 V or 5 V microcontroller systems without level-shifting |
| RF Operating Frequency | 13.56 MHz - compliant with global NFC and contactless smartcard standards |
| Max Data Rate | 848 kbit/s (MIFARE Classic) - supports high-throughput transaction handling in transit and payment terminals |
| FIFO Buffer Size | 512 bytes - reduces host CPU overhead during burst data transfers with ISO/IEC 14443 cards |
| Operating Temperature | −40 °C to +105 °C - qualified for industrial and outdoor access control enclosures |
| Power-Down Current | 8 nA typical - enables battery-powered devices to sustain multi-week standby with LPCD active |
| Antenna Range | Up to 12 cm (ISO/IEC 14443-A/MIFARE) - achievable with properly tuned external antenna matching network |
Pinout & Package
HVQFN32 package (SOT617-1), 5 mm × 5 mm × 0.85 mm body, wettable flanks, MSL2, with exposed thermal pad (VSS) for improved heat dissipation and solder-joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TX1 / TX2 | RF Transmitter Outputs | Deliver modulated 13.56 MHz carrier to antenna matching network; dual outputs support balanced or differential antenna drive |
| RXP / RXN | Differential RF Receiver Inputs | Accept received signal from antenna; differential input improves noise immunity and sensitivity |
| IRQ | Interrupt Request Output | Asserts active-low signal on frame completion, error, card detection, or timer underflow - enables event-driven host firmware |
| SCL / SDA | I²C Host Interface | Supports standard/fast/fast-mode-plus I²C for primary host communication or dedicated SAM interface |
| IF0–IF3 | Configurable Host Interface Pins | Multifunction pins assigned dynamically to SPI, UART, or I²C signals based on IFSEL0/IFSEL1 state |
| PDOWN | Power-Down Control Input | Active-high signal enabling ultra-low-power mode (<40 nA); resets internal state on deassertion |
Key Features
| Feature | Design Value |
|---|---|
| Multi-Protocol Support | Hardware-accelerated framing and CRC for ISO/IEC 14443A/B, FeliCa, ISO/IEC 15693, and EPC HF - eliminates host-side protocol stack burden |
| Low-Power Card Detection (LPCD) | Configurable via LPCD_OPTIONS register; enables <10 µA average current in card-wait state with wake-on-detection - critical for battery-powered access readers |
| Dedicated SAM Interface | Separate I²C bus (SCL/SDA) with independent timing - isolates secure key operations from main host interface, meeting EMVCo and Common Criteria requirements |
| Flexible Host Connectivity | Single physical pin set (IF0–IF3) supports SPI, UART, or I²C via software-configurable interface selection - simplifies PCB layout and firmware reuse across platforms |
| Integrated PLL Clock Synthesis | Derives all internal clocks from 27.12 MHz crystal - removes need for external oscillator or clock generator, reducing BOM count and board space |
Applications
| Access Control Reader | Transit Fare Terminal |
|---|---|
Use Scenario: Wall-mounted office door reader validating MIFARE DESFire EV2 credentials and logging entry events. IC Role / Device Role / Timing Role: NFC frontend managing RF field generation, card polling, secure authentication handshake, and encrypted data exchange with host MCU. Use Value: Achieves 12 cm read range with compact PCB antenna and maintains <15 µA average current in LPCD mode for 2-year battery life. |
Use Scenario: Handheld validator used by transit staff to verify FeliCa-based Suica or ICOCA cards in underground stations. IC Role / Device Role / Timing Role: Dual-mode frontend supporting both FeliCa (424 kbit/s) and ISO/IEC 14443A (848 kbit/s) protocols with automatic mode switching. Use Value: Hardware CRC and framing reduce host processing latency to <5 ms per transaction, enabling rapid tap-and-go validation. |
| Secure Payment Kiosk | Industrial Asset Tagging |
Use Scenario: Unattended retail kiosk accepting contactless EMV payments using MIFARE Plus and Visa payWave cards. IC Role / Device Role / Timing Role: NFC controller executing EMV contactless protocol stack layer 2/3, interfacing with SAM for cryptographic key storage and signing. Use Value: Dedicated SAM I²C interface ensures secure key isolation, while 512-byte FIFO prevents data loss during high-speed card polling bursts. |
Use Scenario: Ruggedized handheld tool tracking assets tagged with ISO/IEC 15693 ICODE SLIX2 tags in factory maintenance workflows. IC Role / Device Role / Timing Role: Vicinity protocol reader performing long-range (up to 1 m with large antenna) inventory scans and UID reads. Use Value: Supports ISO/IEC 15693 mode with 26.48 kbit/s data rate and built-in Manchester/BPSK decoding - eliminates need for external baseband processor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NFC frontend applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PN5180A0HN/C1 | Single-chip NFC controller with integrated MCU and firmware; supports same protocols but lacks dedicated SAM I²C and has smaller FIFO (256 B) | Better suited for standalone NFC readers without host MCU; less flexible for custom protocol extensions | Select when reducing component count is prioritized over host-controlled security and protocol customization |
| CLRC66302HN,157 | Same core architecture but rated for 3.0–5.5 V supply only; no LPCD_OPTIONS register; fixed Load Protocol settings | Limited low-power optimization for small-antenna or battery-constrained designs | Select only for legacy 5 V-only systems where CLRC66303HNK's 2.5 V minimum and enhanced LPCD are unnecessary |
Compared with PN5180A0HN/C1 and CLRC66302HN,157, the CLRC66303HNK provides superior flexibility for host-managed security (via dedicated SAM I²C), extended voltage range (2.5 V), and configurable low-power card detection - making it the recommended choice for new industrial and access control designs requiring firmware control and long battery life.
Availability
CLRC66303HNK is available at Aetrix Electronics and suitable for access control systems, transit fare validators, and secure payment kiosks requiring stable component supply, long-term lifecycle assurance, and compliance-ready NFC functionality.
Supply support for CLRC66303HNK 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 applications, with deep expertise in NFC, RFID, and secure element technologies.
The CLRC663 product line was designed specifically for high-reliability, multi-standard NFC reader applications demanding hardware-accelerated protocol handling, low-power operation, and secure key management - targeting access control, transit, and payment infrastructure.
FAQ
What host interfaces does the CLRC66303HNK support?
The CLRC66303HNK supports SPI (up to 10 Mbit/s), UART (RS-232 level, up to 1228.8 kBd), and I²C (Fast-mode Plus, up to 1000 kBd) via configurable multifunction pins IF0–IF3. It also features a separate dedicated I²C interface for secure access module (SAM) connection. All interfaces are fully supported in the CLRC66303HNK variant and documented in the Rev. 5.4 datasheet.
Does the CLRC66303HNK support MIFARE Classic encryption in hardware?
Yes, the CLRC66303HNK includes hardware acceleration for MIFARE Classic encryption in read/write mode, enabling fast and secure authentication with MIFARE Classic 1 kB and 4 kB cards. This capability is explicitly confirmed in Section 2 Features and benefits of the CLRC663 datasheet Rev. 5.4 and applies directly to the CLRC66303HNK variant.
What is the maximum operating distance achievable with the CLRC66303HNK?
The CLRC66303HNK achieves up to 12 cm operating distance in ISO/IEC 14443 type A and MIFARE Classic read/write mode when paired with a properly tuned external antenna and matching network. This value is specified in the datasheet Rev. 5.4 Section 2 and is dependent on antenna size, geometry, and PCB layout - not an intrinsic limit of the CLRC66303HNK itself.
How does the CLRC66303HNK differ from CLRC66301/02 variants?
The CLRC66303HNK supports a wider supply voltage range (2.5 V to 5.5 V vs. 3.0 V min for CLRC66301/02), includes the LPCD_OPTIONS register for fine-grained low-power card detection tuning, and offers enhanced Load Protocol settings optimized for small antennas. These distinctions are explicitly defined in Section 2 of the CLRC663 datasheet Rev. 5.4 and apply uniquely to the CLRC66303HNK ordering variant.
Is the CLRC66303HNK pin-compatible with other CLRC663 package variants?
Yes, the CLRC66303HNK in HVQFN32 (SOT617-1) shares identical pinout and electrical characteristics with other HVQFN32 variants including CLRC66301HN and CLRC66302HN. Pin compatibility is confirmed in Section 7.1 Pin description HVQFN32 of the CLRC663 datasheet Rev. 5.4, ensuring drop-in replacement within the same package family.
CLRC66303HNK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- -
- Frequency:
- -
- Standards:
- -
- Interface:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
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- Qualification:
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- Supplier Device Package:
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CLRC66303HNK FAQ
1.How can I place an order for CLRC66303HNK through Aetrix?
Please submit a Request for Quotation (RFQ) for CLRC66303HNK 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 CLRC66303HNK reliable?
The price and inventory of CLRC66303HNK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CLRC66303HNK is usually 5 days.
3.What payment methods are accepted for CLRC66303HNK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CLRC66303HNK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CLRC66303HNK?
CLRC66303HNK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CLRC66303HNK 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 CLRC66303HNK?
For technical support, including CLRC66303HNK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CLRC66303HNK requirements.
6.How does Aetrix verify that CLRC66303HNK is sourced from the original manufacturer or authorized distributors?
All CLRC66303HNK 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 CLRC66303HNK meets industry standards.
7.What is the process for return or replacement of CLRC66303HNK?
All CLRC66303HNK units undergo pre-shipment inspection (PSI). If there is an issue with CLRC66303HNK, 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 CLRC66303HNK part is unused and in its original packaging.
Return procedure for CLRC66303HNK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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