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NXP Semiconductors NCF2951VTT/TPE080J
- Part No.:
- NCF2951VTT/TPE080J
- Manufacturer:
- NXP Semiconductors
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- -
- Datasheet:
-
NCF2951VTT/TPE080J.pdf
- Description:
- IC PASS ENTRY 125KHZ
- Quantity:
- Payment:
- Shipping:
Inventory:4,290
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Product details
Overview
NCF2951VTT/TPE080J from NXP Semiconductors is a fourth-generation keyless entry/go IC with integrated 16-bit RISC microcontroller, 3D active + 1D passive LF interface (125 kHz), 2 KB EEPROM, 16 KB EROM + 8 KB ROM, and 512-byte RAM. It enables secure inside/outside vehicle detection for push-to-start systems using encrypted UHF response to LF challenge.
For engineers reviewing the NCF2951VTT/TPE080J datasheet, NCF2951VTT/TPE080J pinout, NCF2951VTT/TPE080J application, or NCF2951VTT/TPE080J equivalent, key selection criteria include LF sensitivity (3-channel active 125 kHz frontend), multi-mode crypto support (AES-128, 96-bit protocols), TSSOP38 package compatibility, and 3D transponder integration for precise spatial authentication.
Technical Context
The NCF2951VTT/TPE080J implements a dedicated 16-bit RISC core with hardware-accelerated cryptographic unit supporting AES-128 and proprietary 96-bit security protocols for car access and immobilizer functions. Its 3D active LF frontend delivers enhanced sensitivity across X/Y/Z axes, enabling robust hand-on-handle detection without external signal conditioning.
It integrates a 3-channel PWM engine for RGB LED control, dual SPI interfaces, up to 21 I/O ports (including 8 wake-up inputs), and a temperature sensor. The device operates in dual-mode: active keyless entry via UHF transmitter and passive immobilizer backup using LF power transfer - both managed by on-chip power/battery management logic.
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 backup mode |
| Memory | 2 KB EEPROM (non-volatile configuration), 16 KB EROM + 8 KB ROM (firmware/application storage), 512-byte RAM |
| I/O Capability | Up to 21 programmable I/O ports including 8 wake-up/button inputs and 2 SPI controllers |
| PWM Outputs | 3-channel PWM for direct RGB LED drive with independent duty-cycle control |
| Security Support | Multi-mode crypto unit compliant with automotive keyless entry and immobilizer standards (ISO 14443, ISO 15693) |
| Package | TSSOP38 - 38-pin thin shrink small outline package with 0.5 mm pitch, optimized for compact automotive door handle modules |
Pinout & Package
TSSOP38 package with exposed thermal pad; 38-pin leaded surface-mount format measuring 12.5 × 4.4 × 1.2 mm (L × W × H), designed for reflow soldering in automotive-grade assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDC / VSS | Core power supply / ground | Digital core voltage domain (1.8–3.6 V); requires local decoupling for LF/UHF coexistence |
| VBAT / VBATA / VSSA | Analog power / ground | Separate analog rail for LF frontend and ADC; isolation prevents digital noise coupling into sensitive receive paths |
| IN1P/IN1N – IN3P/IN3N | 3D LF differential inputs | Three matched differential pairs for X/Y/Z axis antenna connections; supports active demodulation and RSSI-based distance estimation |
| P10–P17, P20–P27, P30–P34 | General-purpose I/O | Configurable as GPIO, wake-up inputs, SPI signals, or PWM outputs; 8 pins support edge-triggered wake-up from standby |
| MSCL / MSDA | SPI clock / data | Dual SPI interfaces enable concurrent communication with external EEPROM and sensor hubs without CPU intervention |
Key Features
| Feature | Design Value |
|---|---|
| 3D Active + 1D Passive LF Interface | Enables simultaneous spatial localization (X/Y/Z) and fail-safe immobilizer operation without battery dependency |
| Integrated AES-128 Crypto Engine | Hardware-accelerated encryption eliminates software overhead, ensuring sub-100 µs response latency during challenge-response authentication |
| RGB LED PWM Controller | Direct drive of status LEDs with per-channel brightness control reduces BOM count and PCB area vs discrete driver solutions |
| Temperature Sensor + ADC | On-die thermal monitoring enables adaptive LF gain adjustment to maintain consistent detection range across -40°C to +105°C |
| UHF Transmitter Interface | Dedicated modulation path for external UHF ICs (e.g., PCF790, PQJ7980) ensures clean RF envelope and minimal spectral splatter |
Applications
| Door Handle Proximity Detection | Push-to-Start Engine Authorization |
|---|---|
Use Scenario: Driver places hand on door handle within 1.5 m of vehicle. IC Role / Device Role / Timing Role: NCF2951VTT/TPE080J initiates 125 kHz LF field, measures RSSI from key's response, and triggers UHF handshake only upon valid 3D proximity confirmation. Use Value: Eliminates false unlocks caused by keys in pockets or bags outside detection zone through vector-based spatial filtering. | Use Scenario: Driver sits inside cabin and presses start button. IC Role / Device Role / Timing Role: NCF2951VTT/TPE080J verifies key presence via LF field mapping and executes AES-128 challenge-response over UHF before enabling ignition circuit. Use Value: Prevents unauthorized engine starts when key is outside cabin (e.g., on roof or adjacent vehicle) using validated 3D location data. |
| Immobilizer Backup Mode | RGB Status Feedback System |
Use Scenario: Key battery depleted below 1.8 V during vehicle operation. IC Role / Device Role / Timing Role: NCF2951VTT/TPE080J switches to passive LF mode, drawing power from vehicle's LF basestation to energize transponder and complete immobilizer handshake. Use Value: Maintains regulatory-compliant anti-theft functionality without requiring key battery replacement prior to next service interval. | Use Scenario: Visual feedback required for user interaction (unlock/lock/start/fail). IC Role / Device Role / Timing Role: NCF2951VTT/TPE080J drives RGB LED directly via 3-channel PWM with synchronized color transitions and intensity ramping. Use Value: Replaces 3 discrete LED drivers and associated current-limiting resistors, reducing component count by 7 parts and saving 12 mm² PCB area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar keyless entry/go applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCF2952VTT/TPE080J | Same TSSOP38 package and memory map; lacks integrated 3D transponder - requires external transponder IC for full 3D functionality | Suitable for cost-sensitive designs where 3D transponder is implemented externally or not required | Select NCF2952VTT/TPE080J when system-level 3D capability can be achieved via companion chip rather than monolithic integration |
| PCF7953HVTT/TPE080J | 8-bit architecture, lower LF sensitivity, no AES-128 hardware acceleration, 1 KB EEPROM, single SPI interface | Targeted at legacy keyless entry systems without push-to-start or advanced spatial detection requirements | Choose PCF7953HVTT/TPE080J only for backward-compatible upgrades where existing firmware and LF coil design must be retained |
Compared with NCF2951VTT/TPE080J, NCF2952VTT/TPE080J offers identical packaging and memory but defers 3D transponder implementation externally, while PCF7953HVTT/TPE080J provides functional continuity for older architectures at the expense of modern security, sensitivity, and integration level.
Availability
NCF2951VTT/TPE080J is available at Aetrix Electronics and suitable for automotive door handle modules, push-to-start control units, and immobilizer backup subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for NCF2951VTT/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 leader focused on automotive, industrial, and IoT applications, with deep expertise in secure identification and wireless connectivity solutions.
The ACTIC-4G product line - including NCF2951VTT/TPE080J - was engineered specifically for next-generation keyless entry/go systems demanding high LF sensitivity, cryptographic agility, and seamless integration of 3D spatial awareness into compact automotive modules.
FAQ
What is the primary function of the NCF2951VTT/TPE080J in a keyless entry system?
The NCF2951VTT/TPE080J serves as the central keyless entry/go controller, integrating a 16-bit microcontroller, 3D active LF frontend, and AES-128 crypto engine to perform secure challenge-response authentication between vehicle and key fob. It manages both door unlock and push-to-start authorization while supporting passive immobilizer backup mode - all within a single TSSOP38 package.
Does the NCF2951VTT/TPE080J include an integrated 3D transponder?
Yes, the NCF2951VTT/TPE080J integrates a 3D security transponder as explicitly stated in NXP documentation. This enables full spatial detection (X/Y/Z axes) without requiring an external transponder IC, distinguishing it from the NCF2952VTT/TPE080J variant which lacks this on-die capability.
What memory resources are available on the NCF2951VTT/TPE080J?
The NCF2951VTT/TPE080J provides 2 KB of EEPROM for configuration storage, 16 KB of EROM plus 8 KB of ROM for firmware and application code, and 512 bytes of RAM for runtime variables. These memory allocations are fixed and verified in the official ACTIC-4G datasheet and block diagram documentation.
How does the NCF2951VTT/TPE080J support low-power operation in key fobs?
The NCF2951VTT/TPE080J achieves ultra-low power consumption through its 16-bit RISC core with multiple sleep modes, hardware-accelerated crypto (reducing active time), and intelligent wake-up logic triggered only by valid LF field events. Its design targets multi-year battery life in typical key fob usage patterns, confirmed by NXP's published current consumption profiles across operating states.
Which package type is used for the NCF2951VTT/TPE080J?
The NCF2951VTT/TPE080J uses the TSSOP38 package - a 38-pin thin shrink small outline package with 0.5 mm pitch and exposed thermal pad. This package is specified in NXP's official ordering information and mechanical drawings, and is compatible with standard automotive SMT assembly processes.
NCF2951VTT/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:
- -
NCF2951VTT/TPE080J FAQ
1.How can I place an order for NCF2951VTT/TPE080J through Aetrix?
Please submit a Request for Quotation (RFQ) for NCF2951VTT/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 NCF2951VTT/TPE080J reliable?
The price and inventory of NCF2951VTT/TPE080J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCF2951VTT/TPE080J is usually 5 days.
3.What payment methods are accepted for NCF2951VTT/TPE080J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCF2951VTT/TPE080J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCF2951VTT/TPE080J?
NCF2951VTT/TPE080J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCF2951VTT/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 NCF2951VTT/TPE080J?
For technical support, including NCF2951VTT/TPE080J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCF2951VTT/TPE080J requirements.
6.How does Aetrix verify that NCF2951VTT/TPE080J is sourced from the original manufacturer or authorized distributors?
All NCF2951VTT/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 NCF2951VTT/TPE080J meets industry standards.
7.What is the process for return or replacement of NCF2951VTT/TPE080J?
All NCF2951VTT/TPE080J units undergo pre-shipment inspection (PSI). If there is an issue with NCF2951VTT/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 NCF2951VTT/TPE080J part is unused and in its original packaging.
Return procedure for NCF2951VTT/TPE080J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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