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NXP Semiconductors CLRC66301HN,551
- Part No.:
- CLRC66301HN,551
- Manufacturer:
- NXP Semiconductors
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
CLRC66301HN,551.pdf
- Description:
- IC RFID READER 13.56MHZ 32HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,939
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Product details
Overview
CLRC66301HN,551 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, and P2P passive initiator mode per ISO/IEC 18092. It delivers up to 848 kbit/s transfer speed for MIFARE Classic, integrates 512-byte FIFO, and operates from 3.0 V to 5.5 V supply - deployed in access control readers requiring robust contactless card detection at up to 12 cm range.
For engineers reviewing the CLRC66301HN,551 datasheet, CLRC66301HN,551 pinout, CLRC66301HN,551 application, or CLRC66301HN,551 equivalent, key selection considerations include its HVQFN32 package with wettable flanks, support for SPI/I²C/UART host interfaces, hardware-accelerated MIFARE Classic encryption, low-power card detection (LPCD), and dedicated SAM interface for secure key storage.
Technical Context
The CLRC66301HN,551 implements a fully integrated analog front-end for 13.56 MHz NFC operation, including dual transmitter outputs (TX1/TX2), differential receiver inputs (RXP/RXN), and internal PLL deriving system clock from a 27.12 MHz crystal. Its digital baseband handles ISO/IEC 14443-A framing, CRC, parity, and anticollision logic for Type A - while Type B anticollision is firmware-implemented by the host.
It supports simultaneous protocol handling via configurable host interface pins (IF0–IF3) and includes five timers (four programmable + one LFO-based wake-up timer), interrupt controller with IRQ pin, and register-mapped control of RF parameters, LPCD thresholds, and FIFO water-level alerts - enabling deterministic timing-critical NFC transactions in embedded reader designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0 V to 5.5 V - enables direct integration with 3.3 V or 5 V microcontroller systems without level-shifting. |
| Operating Temperature | −25 °C to +85 °C - suitable for industrial and indoor access control environments. |
| Max Data Rate | 848 kbit/s (ISO/IEC 14443A/MIFARE Classic) - supports high-throughput credential reads in time-sensitive applications. |
| FIFO Size | 512 bytes - buffers full APDU exchanges, reducing host CPU load and improving transaction throughput. |
| Host Interfaces | SPI (up to 10 Mbit/s), I²C (Fast-mode Plus, up to 1000 kBd), UART (RS-232 compatible, up to 1228.8 kBd) - offers flexible MCU connectivity options. |
| RF Operating Distance | Up to 12 cm (ISO/IEC 14443A/MIFARE Classic) - achievable with optimized antenna design and tuning. |
| Power-Down Current | 8 nA typical - enables ultra-low-power standby during card-detection-only modes. |
Pinout & Package
CLRC66301HN,551 uses the HVQFN32 (SOT617-1) package: 5 mm × 5 mm × 0.85 mm body, 32 terminals + central ground pad, MSL2, with wettable flanks for automated optical solder-joint inspection.
| Pin | 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 configurations. |
| RXP / RXN | Differential RF Receiver Inputs | Accept demodulated signal from antenna; differential input improves noise immunity and SNR in electrically noisy environments. |
| IRQ | Interrupt Request Output | Asserts active-low signal on event completion (Rx/Tx end, timer underflow, LPCD detection) - enables event-driven host firmware architecture. |
| PDOWN | Power-Down Control Input | Active-high signal entering hard power-down mode with 8 nA quiescent current - critical for battery-powered reader designs. |
| IF0–IF3 | Configurable Host Interface Pins | Multifunction I/O pins dynamically assigned to SPI/I²C/UART signals - simplifies PCB routing and supports interface reconfiguration in firmware. |
| SCL / SDA | Dedicated I²C Bus Interface | Standard two-wire interface for primary host communication or secondary connection to Secure Access Module (SAM). |
Key Features
| Feature | Design Value |
|---|---|
| Hardware MIFARE Classic Encryption | On-die cryptographic engine accelerates authentication and data encryption - eliminates software overhead and timing side-channel risks. |
| Dedicated SAM Interface | Separate I²C bus (SCL/SDA) for external Secure Access Module - isolates key storage and crypto operations from main host processor. |
| Low-Power Card Detection (LPCD) | Configurable analog front-end sensitivity with wake-up timer (Timer4) - enables <10 µA average current in always-on card-sensing mode. |
| Integrated PLL | Derives all internal clocks from 27.12 MHz crystal - eliminates need for external clock generator and reduces BOM count. |
| Flexible Power Domains | Independent DVDD, AVDD, TVDD, PVDD supplies - allows selective power gating and noise isolation between digital, analog, and RF sections. |
Applications
| Access Control Reader | Gaming Terminal |
|---|---|
Use Scenario: Contactless credential validation at office building entry points with multi-technology card support (MIFARE Classic, DESFire, FeliCa). IC Role / Device Role / Timing Role: NFC frontend managing RF modulation/demodulation, protocol framing, and secure host handoff - handles ISO/IEC 14443-A/B and FeliCa physical layer timing deterministically. Use Value: Enables single-reader hardware platform supporting global credential formats, reducing inventory complexity and field upgrade costs. |
Use Scenario: Token-based game redemption kiosks accepting NFC-enabled loyalty cards and transit passes. IC Role / Device Role / Timing Role: High-speed initiator for P2P passive mode and read/write operations - executes sub-100 ms card interrogation cycles using 848 kbit/s MIFARE transfers. Use Value: Delivers responsive user experience with <12 cm reliable read range and hardware-accelerated crypto for secure token validation. |
| Industrial Asset Tagging | Secure Document Authentication |
Use Scenario: Ruggedized handheld scanners reading ISO/IEC 15693 tags on machinery for maintenance logging and firmware verification. IC Role / Device Role / Timing Role: Vicinity protocol controller supporting ICODE EPC UID and ISO/IEC 18000-3 Mode 3 - manages long-range (up to 50 cm) tag polling with adaptive RF power control. Use Value: Extends operational range beyond standard NFC limits while maintaining compatibility with existing EPC-compliant infrastructure. |
Use Scenario: Government ID document verification terminals validating ePassport chips and contactless national ID cards. IC Role / Device Role / Timing Role: EMV-compliant RF front-end implementing ISO/IEC 14443-B read/write and P2P initiator functions - meets RF-level requirements for contactless smartcard interoperability. Use Value: Provides certified RF performance for official document authentication without requiring custom antenna tuning per deployment site. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NFC frontend applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CLRC66303HNE | Wettable-flank HVQFN32 package; enhanced LPCD register (LPCD_OPTIONS); extended Load Protocol settings for small antennas. | Better suited for space-constrained, battery-powered designs requiring optimized low-power card detection. | Select CLRC66303HNE for new designs where antenna size is limited or ultra-low-power operation is mandatory. |
| PN5180A0HN/C1 | Single-chip NFC controller with integrated ARM Cortex-M0+; supports same protocols but adds embedded firmware stack and secure element interface. | Reduces host MCU firmware burden; targets applications needing out-of-box NFC functionality with minimal host intervention. | Choose PN5180A0HN/C1 when rapid time-to-market and reduced host software development effort outweigh cost and BOM simplicity. |
Compared with CLRC66301HN,551, CLRC66303HNE offers improved LPCD flexibility and antenna compatibility for compact designs, while PN5180A0HN/C1 shifts protocol handling to an embedded core - making CLRC66301HN,551 optimal for designs retaining full host control over NFC stack and timing-critical RF parameter tuning.
Availability
CLRC66301HN,551 is available at Aetrix Electronics and suitable for access control systems, gaming terminals, and industrial asset tagging requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for CLRC66301HN,551 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 delivers high-performance, multi-protocol NFC frontends designed specifically for embedded reader systems requiring hardware-accelerated crypto, flexible host interfacing, and robust RF performance across global contactless standards.
FAQ
What is the maximum operating distance supported by CLRC66301HN,551?
The CLRC66301HN,551 achieves up to 12 cm read/write range with ISO/IEC 14443A and MIFARE Classic cards under optimal conditions - including properly tuned 50 Ω antenna matching network, 1 W RF output capability, and low-noise PCB layout. Range varies with card type, antenna geometry, and environmental RF interference; actual deployment requires empirical tuning per mechanical enclosure.
Does CLRC66301HN,551 support hardware-based MIFARE Classic encryption?
Yes, CLRC66301HN,551 includes dedicated on-die hardware acceleration for MIFARE Classic Crypto1 cipher operations - enabling full authentication and encrypted data exchange without host CPU involvement. This ensures deterministic timing, resistance to timing side-channel attacks, and reduced firmware complexity compared to software-only implementations.
Which host interfaces are available on CLRC66301HN,551 and what are their speed limits?
CLRC66301HN,551 supports SPI (up to 10 Mbit/s), I²C (Fast-mode Plus, up to 1000 kBd), and UART (RS-232 compatible, up to 1228.8 kBd). All three interfaces are implemented via shared multifunction pins (IF0–IF3) and dedicated lines (SCL/SDA for I²C, TX/RX for UART), allowing runtime selection and coexistence with separate SAM I²C bus.
How does the low-power card detection (LPCD) function work in CLRC66301HN,551?
CLRC66301HN,551 implements analog-front-end-based LPCD that monitors antenna voltage fluctuations induced by nearby cards - triggering IRQ and waking the host only upon valid card presence. It operates independently of full RF activation, drawing <10 µA average current in monitoring mode, and is configurable via registers to reject false triggers from metal objects or EMI.
Is CLRC66301HN,551 pin-compatible with other CLRC663 variants like CLRC66303HNE?
Yes, CLRC66301HN,551 and CLRC66303HNE share identical HVQFN32 (SOT617-1) pinout and electrical characteristics - enabling drop-in replacement in existing layouts. However, CLRC66303HNE introduces enhanced LPCD configuration registers and updated Load Protocol settings; firmware updates may be required to leverage these features fully.
CLRC66301HN,551 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- RFID Reader
- Frequency:
- 13.56MHz
- Standards:
- ISO 14443, ISO 15693, 18000-3, MIFARE, NFC
- Interface:
- I2C, SPI, UART
- Voltage - Supply:
- 3V ~ 5.5V
- Operating Temperature:
- -25°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-HVQFN (5x5)
CLRC66301HN,551 FAQ
1.How can I place an order for CLRC66301HN,551 through Aetrix?
Please submit a Request for Quotation (RFQ) for CLRC66301HN,551 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 CLRC66301HN,551 reliable?
The price and inventory of CLRC66301HN,551 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CLRC66301HN,551 is usually 5 days.
3.What payment methods are accepted for CLRC66301HN,551?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CLRC66301HN,551 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CLRC66301HN,551?
CLRC66301HN,551 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CLRC66301HN,551 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 CLRC66301HN,551?
For technical support, including CLRC66301HN,551 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CLRC66301HN,551 requirements.
6.How does Aetrix verify that CLRC66301HN,551 is sourced from the original manufacturer or authorized distributors?
All CLRC66301HN,551 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 CLRC66301HN,551 meets industry standards.
7.What is the process for return or replacement of CLRC66301HN,551?
All CLRC66301HN,551 units undergo pre-shipment inspection (PSI). If there is an issue with CLRC66301HN,551, 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 CLRC66301HN,551 part is unused and in its original packaging.
Return procedure for CLRC66301HN,551:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CLRC66301HN,551 Tags
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