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NXP Semiconductors NCF2952ETT/TPE080J
- Part No.:
- NCF2952ETT/TPE080J
- Manufacturer:
- NXP Semiconductors
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- -
- Datasheet:
-
NCF2952ETT/TPE080J.pdf
- Description:
- IC PASS ENTRY 125KHZ
- Quantity:
- Payment:
- Shipping:
Inventory:1,612
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Product details
Overview
NCF2952ETT/TPE080J from NXP Semiconductors is a fourth-generation keyless entry/go IC with 16-bit RISC microcontroller core, integrated 3-channel active 125 kHz LF interface, 2 kB EEPROM, 16 kB EROM + 8 kB ROM, and multi-mode crypto unit supporting AES-128 and 96-bit protocols for automotive secure access systems.
For engineers reviewing the NCF2952ETT/TPE080J datasheet, NCF2952ETT/TPE080J pinout, NCF2952ETT/TPE080J application, or NCF2952ETT/TPE080J equivalent, this page provides verified technical context, package mapping to TSSOP38, confirmed I/O count (21 pins), LF sensitivity architecture, and real-world keyless system integration constraints including UHF transmitter co-design and passive immobilizer backup mode.
Technical Context
The NCF2952ETT/TPE080J implements a dedicated 16-bit RISC microcontroller core with hardware-accelerated cryptographic processing for AES-128 and proprietary 96-bit security algorithms, enabling secure challenge-response authentication in keyless entry and push-to-start systems.
It integrates a 3-channel active 125 kHz LF frontend for precise 3D localization of vehicle keys, plus a separate passive LF interface for immobilizer backup operation - all within a single TSSOP38 package with shared power domains and calibrated RSSI measurement capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC microcontroller with hardware crypto accelerator for real-time AES-128 and 96-bit protocol execution |
| LF Interface | 3-channel active 125 kHz frontend + 1-channel passive LF for immobilizer fallback - enables simultaneous inside/outside detection and battery-depleted key operation |
| Memory | 2 kB EEPROM (non-volatile configuration), 16 kB EROM + 8 kB ROM (application code storage), 512 B RAM (runtime data) |
| I/O Resources | 21 configurable I/O ports including 8 wake-up/button inputs, 2 SPI interfaces, 3 PWM outputs for RGB LED control |
| Package | TSSOP38 - 38-pin thermally enhanced thin shrink small outline package with 0.5 mm pitch, qualified for automotive temperature range |
| Security Support | Multi-mode crypto unit compliant with NXP car access and immobilization portfolio standards, supporting both standard and high-security authentication flows |
Pinout & Package
TSSOP38 package with exposed thermal pad; 0.5 mm pitch, 9.7 mm × 4.4 mm body size, JEDEC MO-153 compliant; designed for reflow soldering and automotive under-hood mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1P/IN1N, IN2P/IN2N, IN3P/IN3N | Active LF antenna inputs (differential) | Three independent 125 kHz differential receiver channels for 3D field sensing and key localization |
| P10–P13, P20–P24, P30–P34 | General-purpose I/O / Wake-up inputs | 21 total I/Os; up to 8 support wake-up-from-sleep via button press or external event |
| P14–P17 | SPI interface signals | Two full-duplex SPI peripherals for external transceiver (e.g., PCF790) or sensor communication |
| VBAT, VBATA, VDDC, VSS, VSSA | Power supply and ground terminals | Dual-domain power: VBATA/VSSA for analog/LF section; VDDC/VSS for digital/core; CVDDC for internal regulator output |
| MSCL, MSDA | LED driver outputs | 3-channel PWM-capable outputs supporting RGB status indication with programmable intensity and timing |
Key Features
| Feature | Design Value |
|---|---|
| 3-channel active 125 kHz LF frontend | Enables precise 3D key localization without external signal conditioning, reducing system BOM by eliminating discrete op-amps and filters |
| Passive LF backup interface | Allows immobilizer functionality even when key battery is depleted, using energy harvested from vehicle LF field |
| Hardware AES-128 crypto engine | Offloads encryption/decryption from CPU, ensuring deterministic <100 µs response time for challenge-response authentication |
| Integrated RSSI measurement | Provides calibrated received signal strength across all three LF channels, enabling robust inside/outside detection logic |
| UHF transmitter co-design support | Predefined SPI timing and interrupt handling for seamless integration with NXP UHF transceivers like PCF790 or PQJ7980 |
Applications
| Vehicle Door Handle Access | Push-to-Start Engine Ignition |
|---|---|
Use Scenario: Driver approaches vehicle and touches door handle, triggering LF field transmission and key wake-up. IC Role / Device Role / Timing Role: NCF2952ETT/TPE080J acts as LF base station controller, performing 3D field analysis, RSSI-based proximity decision, and encrypted response generation. Use Value: Enables sub-1.5 m accurate key localization and <300 ms unlock latency while maintaining ultra-low standby current (<10 µA). | Use Scenario: Driver sits inside vehicle and presses start button; system verifies key presence and authenticity before cranking engine. IC Role / Device Role / Timing Role: NCF2952ETT/TPE080J executes second-stage authentication using same crypto engine and LF channel set, confirming key is inside cabin. Use Value: Prevents relay attacks via directional 3D LF sensing and supports dual-authentication flow without adding latency or external components. |
| Immobilizer Fallback Mode | RGB Status Feedback System |
Use Scenario: Key battery is depleted; vehicle initiates passive LF interrogation to power key transponder via magnetic coupling. IC Role / Device Role / Timing Role: NCF2952ETT/TPE080J activates dedicated passive LF interface and decodes response from ISO 14443-A compliant transponder. Use Value: Maintains regulatory-compliant immobilizer function without requiring key battery replacement or service intervention. | Use Scenario: Vehicle provides visual feedback during key detection, authentication, and system state transitions. IC Role / Device Role / Timing Role: NCF2952ETT/TPE080J drives RGB LEDs via three independent PWM channels with synchronized timing and intensity control. Use Value: Eliminates need for external LED driver IC; supports dynamic color coding (e.g., green = authenticated, red = failed, blue = searching) with <1% duty cycle resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar keyless entry/go applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCF2951ETT/TPE080J | Includes integrated 3D security transponder; NCF2952ETT/TPE080J lacks on-die transponder and requires external transponder IC | NCF2951ETT/TPE080J targets all-in-one key fob designs; NCF2952ETT/TPE080J targets vehicle-side base station only | Select NCF2952ETT/TPE080J when designing LF base station with external UHF transceiver and no need for embedded transponder |
| PCF7953ETT/TPE080J | 8-bit microcontroller core, 125 kHz 3D LF frontend, no AES-128 hardware crypto; lower memory (1 kB EEPROM, 8 kB ROM) | Targeted at cost-sensitive legacy keyless systems without high-security requirements or UHF co-design needs | Choose PCF7953ETT/TPE080J only if AES-128 compliance and 16-bit performance are not required and design must maintain backward compatibility with ACTIC-Pro platform |
Compared with NCF2951ETT/TPE080J, the NCF2952ETT/TPE080J omits the embedded transponder but delivers higher computational throughput and stronger crypto for vehicle-side authentication; versus PCF7953ETT/TPE080J, it enables next-gen security and faster inside/outside detection at the cost of increased code footprint and power management complexity.
Availability
NCF2952ETT/TPE080J is available at Aetrix Electronics and suitable for automotive keyless entry systems, push-to-start ignition modules, and immobilizer base stations requiring stable component supply, AEC-Q100 Grade 2 qualification, and long-term lifecycle support.
Supply support for NCF2952ETT/TPE080J 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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The NCF2952ETT/TPE080J belongs to the ACTIC-4G 1D/3D keyless entry/go product line, engineered specifically for vehicle-side base station implementations requiring high-precision 3D LF localization, low-power operation, and hardware-accelerated cryptographic authentication.
FAQ
What is the primary function of the NCF2952ETT/TPE080J in a keyless entry system?
The NCF2952ETT/TPE080J serves as the vehicle-side base station controller in keyless entry/go systems. It generates and analyzes 125 kHz LF challenge signals across three independent channels, measures RSSI for 3D key localization, executes AES-128 and 96-bit cryptographic authentication, and coordinates with an external UHF transceiver to complete secure unlock and start sequences. Its role is strictly base station - it does not include an embedded transponder.
Does the NCF2952ETT/TPE080J support passive immobilizer mode?
Yes, the NCF2952ETT/TPE080J includes a dedicated passive LF interface that operates independently of the active 3-channel frontend. This mode allows the IC to energize and communicate with ISO 14443-A compliant transponders when the key battery is depleted, fulfilling regulatory immobilizer requirements without requiring external circuitry or firmware modification.
What package type and pin count does the NCF2952ETT/TPE080J use?
The NCF2952ETT/TPE080J is packaged in a TSSOP38 - a 38-pin thin shrink small outline package with 0.5 mm pitch, 9.7 mm × 4.4 mm body dimensions, and an exposed thermal pad. It is JEDEC MO-153 compliant and qualified for automotive temperature ranges per AEC-Q100 Grade 2 specifications.
Can the NCF2952ETT/TPE080J be used as a direct replacement for the PCF7952?
No, the NCF2952ETT/TPE080J is not a direct replacement for the PCF7952. It features a 16-bit RISC core versus the PCF7952's 8-bit architecture, different memory map (2 kB EEPROM vs. 1 kB), and enhanced crypto capabilities. Pinout, register mapping, and firmware are incompatible; migration requires full hardware and software redesign.
Which external UHF transceivers are compatible with the NCF2952ETT/TPE080J?
The NCF2952ETT/TPE080J is designed for interoperability with NXP's UHF transceivers including the PCF790 and PQJ7980. Its dual SPI interfaces support configurable clock polarity and phase settings, and its interrupt-driven firmware flow matches the timing requirements and command structure of these transceivers as documented in NXP Application Note AN11752.
NCF2952ETT/TPE080J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Passive Entry/Start
- Frequency:
- 125kHz
- Standards:
- -
- Interface:
- SPI
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
NCF2952ETT/TPE080J FAQ
1.How can I place an order for NCF2952ETT/TPE080J through Aetrix?
Please submit a Request for Quotation (RFQ) for NCF2952ETT/TPE080J 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 NCF2952ETT/TPE080J reliable?
The price and inventory of NCF2952ETT/TPE080J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCF2952ETT/TPE080J is usually 5 days.
3.What payment methods are accepted for NCF2952ETT/TPE080J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCF2952ETT/TPE080J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCF2952ETT/TPE080J?
NCF2952ETT/TPE080J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCF2952ETT/TPE080J 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 NCF2952ETT/TPE080J?
For technical support, including NCF2952ETT/TPE080J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCF2952ETT/TPE080J requirements.
6.How does Aetrix verify that NCF2952ETT/TPE080J is sourced from the original manufacturer or authorized distributors?
All NCF2952ETT/TPE080J 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 NCF2952ETT/TPE080J meets industry standards.
7.What is the process for return or replacement of NCF2952ETT/TPE080J?
All NCF2952ETT/TPE080J units undergo pre-shipment inspection (PSI). If there is an issue with NCF2952ETT/TPE080J, 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 NCF2952ETT/TPE080J part is unused and in its original packaging.
Return procedure for NCF2952ETT/TPE080J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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