My Inquiry
My Account
STMicroelectronics CRX14-MQP/1GE
- Part No.:
- CRX14-MQP/1GE
- Manufacturer:
- STMicroelectronics
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CRX14-MQP/1GE.pdf
- Description:
- IC RFID READER 13.56MHZ 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,575
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CRX14-MQP/1GE from STMicroelectronics is an ISO/IEC 14443 Type-B contactless coupler IC designed for secure short-range RFID reader systems. It integrates I²C host interface, ASK-modulated 13.56 MHz RF transmitter, BPSK-demodulated RF receiver, automated ST anti-collision, and France Telecom anti-clone authentication. Operates from single 5 V ±500 mV supply in SO16N package and supports 106 Kbit/s data transfer with 36-byte frame buffer - deployed in secure access control terminals and disposable smart card readers.
For engineers reviewing the CRX14-MQP/1GE datasheet, CRX14-MQP/1GE pinout, CRX14-MQP/1GE application, or CRX14-MQP/1GE equivalent, key selection criteria include ISO14443-B compliance, integrated anti-collision logic, external 13.56 MHz crystal dependency, I²C address configuration via E0–E2 pins, and dual-ground (GND/GND_RF) layout requirements.
Technical Context
The CRX14-MQP/1GE implements a dedicated analog front-end for ISO14443-B PICC coupling: its transmitter generates 10% ASK-modulated 13.56 MHz carrier on RFOUT using external crystal (OSC1/OSC2), while its receiver demodulates load-modulated signals via RFIN using 847 kHz BPSK sub-carrier decoding. VREF sets ASK modulation depth reference.
Digital control is fully I²C-based: 400 kHz compliant interface with hardwired 7-bit device addressing (E0/E1/E2), supporting up to eight devices on one bus. Internal register map includes Parameter (00h), I/O Frame (01h), Authenticate (02h), and Slot Marker (03h) registers - all volatile and accessed via standard I²C read/write sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Protocol Support | ISO/IEC 14443 Type-B only - defines RF power, modulation, framing, and anti-collision rules for PICC communication. |
| Carrier Frequency | 13.56 MHz - requires external quartz crystal connected between OSC1 and OSC2; no internal oscillator. |
| Data Rate | 106 Kbit/s full-duplex - fixed rate per ISO14443-B; no software-selectable rates. |
| I²C Interface | 400 kHz Fast-mode - supports multi-drop with 3 chip-enable pins (E0–E2) for 8-device addressing. |
| Frame Buffer | 36-byte bidirectional register (01h) - stores complete request/answer frames; no DMA or FIFO overflow handling. |
| Supply Voltage | 5 V ±500 mV - single rail powers digital core and analog RF sections; GND and GND_RF must be tied externally. |
| CRC Function | Hardware CRC generation/check per ISO14443-B - applied automatically to transmitted/received frames; no host CPU overhead. |
Pinout & Package
CRX14-MQP/1GE is housed in SO16N (SOIC-16 narrow, 150 mils body width), with 16 leads and 1.27 mm pitch. Pin 1 is located at top-left corner when notch faces upward; pin numbering follows standard counter-clockwise sequence.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RFOUT (14) | Antenna Output Driver | Drives modulated 13.56 MHz signal to external LRC antenna circuit; not short-circuit tolerant. |
| RFIN (2) | Antenna Input Filter | Receives load-modulated signal from antenna; feeds BPSK sub-carrier decoder - requires external matching network. |
| OSC1 (13), OSC2 (12) | Oscillator Interface | Connects to 13.56 MHz quartz crystal (or external clock on OSC1 only); OSC2 open if clock source used. |
| E0, E1, E2 (3,4,5) | Chip Enable Inputs | Set LSBs of I²C 7-bit device address (b1–b3); CMOS-compatible inputs with internal pull-downs. |
| SCL (10), SDA (9) | I²C Bus Interface | Standard two-wire serial interface; SDA is open-drain, SCL may be push-pull or open-drain depending on master. |
| VCC (16), GND (6,7,11), GND_RF (15) | Power & Ground | VCC = +5 V supply; GND and GND_RF must be connected externally - separation reduces RF noise coupling. |
| VREF (1) | Transmitter Reference | Analog reference for ASK modulation depth; requires external decoupling capacitor (7 pF typical). |
Key Features
| Feature | Design Value |
|---|---|
| Automated ST Anti-Collision | Probabilistic scanning method enables detection and selection of multiple ST short-range memories in field without host intervention. |
| France Telecom Anti-Clone | Hardware-accelerated authentication function verifies ST memory authenticity - prevents cloning of secure credentials. |
| Integrated Analog Front-End | Complete ISO14443-B RF interface: ASK transmitter + BPSK sub-carrier receiver - eliminates need for discrete RF components. |
| 36-Byte Frame Register | Dedicated I/O buffer (01h) holds full ISO14443-B frame (SOF, data, EOF, CRC) - simplifies host firmware frame assembly. |
| Dual-Ground Architecture | Separate GND and GND_RF pins minimize digital switching noise coupling into sensitive RF receive path. |
Applications
| Secure Physical Access Control | Disposable Smart Card Reader |
|---|---|
Use Scenario: Door controller reads encrypted employee badges in high-security office buildings. IC Role / Device Role / Timing Role: CRX14-MQP/1GE acts as ISO14443-B analog coupler - handles RF modulation/demodulation and anti-collision while host MCU manages protocol stack. Use Value: Enables low-cost, tamper-resistant reader design with built-in anti-clone verification - meets ISO/IEC 27001 physical security requirements. | Use Scenario: Single-use transit ticket validator at subway turnstiles with limited PCB space. IC Role / Device Role / Timing Role: CRX14-MQP/1GE provides compact, self-contained RF interface - replaces discrete transistor-based couplers and reduces BOM count by 7+ components. Use Value: SO16N footprint and 5 V operation simplify integration into cost-sensitive, battery-powered handheld validators. |
| Government ID Document Reader | Healthcare Patient Badge Scanner |
Use Scenario: Desktop reader authenticates e-passports and national ID cards compliant with ICAO Doc 9303. IC Role / Device Role / Timing Role: CRX14-MQP/1GE executes ISO14443-B RF layer - performs CRC, frame formatting, and anti-collision under host MCU control. Use Value: France Telecom anti-clone function validates chip authenticity during mutual authentication - critical for preventing counterfeit document use. | Use Scenario: Bedside tablet scans NFC-enabled patient wristbands to retrieve EHR data. IC Role / Device Role / Timing Role: CRX14-MQP/1GE serves as contactless interface - manages 13.56 MHz carrier generation and BPSK demodulation for low-latency badge reads. Use Value: 106 Kbit/s data rate and 36-byte frame buffer ensure rapid transmission of HL7-encoded patient identifiers - supports real-time clinical workflows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ISO14443-B coupler applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST25R3916B | Integrated NFC controller with ISO14443-A/B/F, 13.56 MHz transceiver, and embedded protocol engine - no external host MCU required for basic commands. | Supports multi-protocol (A/B/F) and peer-to-peer; CRX14-MQP/1GE is A/B-only and requires full host protocol stack. | Select ST25R3916B for reduced firmware burden and future-proofing; CRX14-MQP/1GE for legacy ISO14443-B-only designs with strict cost targets. |
| PN512 | NXP ISO14443-A/B reader IC with integrated analog front-end, but lacks France Telecom anti-clone and ST-specific anti-collision logic. | Requires external microcontroller for anti-collision arbitration and authentication - no hardware-accelerated clone protection. | Choose PN512 for NXP ecosystem compatibility; CRX14-MQP/1GE where ST memory authentication and probabilistic anti-collision are mandatory. |
Compared with ST25R3916B and PN512, CRX14-MQP/1GE offers lower system cost and smaller footprint for ISO14443-B-only readers requiring ST-specific security features - but demands full host-side protocol implementation and lacks multi-standard support.
Availability
CRX14-MQP/1GE is available at Aetrix Electronics and suitable for secure physical access control, government ID document reading, disposable smart card validation, and healthcare patient identification requiring stable component supply across long-lifecycle deployments.
Supply support for CRX14-MQP/1GE 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, specializing in microcontrollers, power management, sensors, and secure connectivity solutions for industrial, automotive, and consumer markets.
CRX14-MQP/1GE belongs to ST's legacy contactless coupler product line, engineered specifically for ISO14443-B reader applications demanding low-cost, high-security analog RF interfacing with ST short-range memories.
FAQ
What external components are mandatory for CRX14-MQP/1GE operation?
The CRX14-MQP/1GE requires a 13.56 MHz quartz crystal between OSC1 and OSC2, decoupling capacitors on VCC/GND/GND_RF (including 22 µF and 100 nF), a 7 pF capacitor on VREF, and an external LRC antenna matching network connected to RFOUT and RFIN. No internal oscillator or voltage regulator is present - all analog biasing depends on these external elements.
Does CRX14-MQP/1GE support ISO14443-A cards?
No. CRX14-MQP/1GE is strictly compliant with ISO/IEC 14443 Type-B only. It does not implement the Manchester encoding, 106 Kbit/s ASK modulation depth, or anti-collision protocols required for Type-A PICCs. Attempting to communicate with Type-A cards will result in failed frame synchronization and CRC errors.
How is the I²C device address configured on CRX14-MQP/1GE?
The 7-bit I²C device address is set by hardwiring E0, E1, and E2 pins to VCC or GND - each pin determines one bit (b1–b3) of the address. The upper four bits are fixed as 1100b (0xC), yielding addresses from 0xC0 to 0xC7. Pins left unconnected default to logic 0 via internal pull-down resistors.
Can CRX14-MQP/1GE operate from 3.3 V supply?
No. CRX14-MQP/1GE is specified only for 5 V ±500 mV operation per Absolute Maximum Ratings (Table 8) and DC characteristics (Table 11). Supplying 3.3 V will prevent proper ASK modulation, disable internal logic thresholds, and cause I²C communication failure - no 3.3 V variant exists in this family.
CRX14-MQP/1GE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- RFID Reader
- Frequency:
- 13.56MHz
- Standards:
- ISO 14443
- Interface:
- I2C
- Voltage - Supply:
- 5V
- Operating Temperature:
- -20°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
CRX14-MQP/1GE FAQ
1.How can I place an order for CRX14-MQP/1GE through Aetrix?
Please submit a Request for Quotation (RFQ) for CRX14-MQP/1GE 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 CRX14-MQP/1GE reliable?
The price and inventory of CRX14-MQP/1GE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CRX14-MQP/1GE is usually 5 days.
3.What payment methods are accepted for CRX14-MQP/1GE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CRX14-MQP/1GE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CRX14-MQP/1GE?
CRX14-MQP/1GE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CRX14-MQP/1GE 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 CRX14-MQP/1GE?
For technical support, including CRX14-MQP/1GE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CRX14-MQP/1GE requirements.
6.How does Aetrix verify that CRX14-MQP/1GE is sourced from the original manufacturer or authorized distributors?
All CRX14-MQP/1GE 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 CRX14-MQP/1GE meets industry standards.
7.What is the process for return or replacement of CRX14-MQP/1GE?
All CRX14-MQP/1GE units undergo pre-shipment inspection (PSI). If there is an issue with CRX14-MQP/1GE, 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 CRX14-MQP/1GE part is unused and in its original packaging.
Return procedure for CRX14-MQP/1GE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CRX14-MQP/1GE Tags
-
SL2S2602FTBX
NXP Semiconductors
-
ST25DV04K-IER6S3
STMicroelectronics
-
ST25DV04K-IER6C3
STMicroelectronics
-
LXMSJZNCMD-217
Murata Electronics
-
NT3H2111W0FTTJ
NXP Semiconductors
-
NT3H2111W0FHKH
NXP Semiconductors
-
M24LR04E-RMC6T/2
STMicroelectronics
-
ST25DV04KC-JF6D3
STMicroelectronics
-
ST25DV64KC-IE6S3
STMicroelectronics
-
ST25DV64K-IER6T3
STMicroelectronics
-
NT3H2211W0FTTJ
NXP Semiconductors
-
NT3H2211W0FHKH
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
