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NXP Semiconductors NCF2952MTT/TPE080J
- Part No.:
- NCF2952MTT/TPE080J
- Manufacturer:
- NXP Semiconductors
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- -
- Datasheet:
-
NCF2952MTT/TPE080J.pdf
- Description:
- IC PASS ENTRY 125KHZ
- Quantity:
- Payment:
- Shipping:
Inventory:2,189
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Product details
Overview
NCF2952MTT/TPE080J from NXP Semiconductors is a fourth-generation keyless entry/go IC featuring a low-power 16-bit RISC microcontroller core, integrated 3-channel active 125 kHz LF interface (1D), passive LF backup for immobilizer mode, 2 KB EEPROM, 16 KB EROM + 8 KB ROM, and 512-byte RAM. It enables secure, battery-efficient vehicle access and push-to-start functions in automotive door handles and start buttons.
For engineers reviewing the NCF2952MTT/TPE080J datasheet, NCF2952MTT/TPE080J pinout, NCF2952MTT/TPE080J application, or NCF2952MTT/TPE080J equivalent, this device supports precise inside/outside detection via RSSI-based LF signal analysis, multi-mode crypto (AES-128, 96-bit), and UHF response transmission - critical for OEM key fob design and ECU-side authentication systems.
Technical Context
The NCF2952MTT/TPE080J implements a dedicated 16-bit RISC architecture with hardware-accelerated cryptographic unit supporting AES-128 and legacy car access protocols. Its 3-channel active LF frontend enables simultaneous 3D field measurement for robust spatial localization, while passive LF mode ensures fallback immobilizer operation without external power.
It integrates on-chip RC oscillator, PWM for RGB LED control (3 channels), SPI interfaces (2), up to 21 I/O ports including 8 wake-up inputs, and analog peripherals including ADC and temperature sensor - all optimized for ultra-low standby current in battery-powered key fobs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC microcontroller with hardware crypto accelerator |
| LF Interface | 3-channel active 125 kHz frontend + 1-channel passive LF for immobilizer backup |
| Memory | 2 KB EEPROM (non-volatile config), 16 KB EROM + 8 KB ROM (firmware/app), 512 B RAM |
| Crypto Support | AES-128, 96-bit, and legacy car access/immobilizer security protocols |
| I/O Capability | Up to 21 GPIOs, including 8 wake-up/button inputs and 2 SPI interfaces |
| PWM Outputs | 3-channel PWM for RGB LED status indication and user feedback |
| Package | TSSOP38 - 38-pin thermally enhanced thin shrink small outline package |
Pinout & Package
TSSOP38 package with exposed thermal pad; 0.5 mm pitch, 12.5 × 4.4 mm body size; RoHS-compliant, lead-free finish; designed for reflow soldering and high-reliability automotive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDC / VSS | Core power supply / ground | Supplies digital logic domain (1.8–3.6 V); VSS provides reference return path |
| VBAT / VBATA / VSSA | Battery input / analog supply / analog ground | Direct connection to coin-cell battery; powers analog front-end and LF receiver independently |
| IN1P/IN1N, IN2P/IN2N, IN3P/IN3N | Differential LF antenna inputs | Three independent 125 kHz differential inputs for 3D magnetic field sensing and RSSI calculation |
| P10–P17, P20–P27, P30–P34 | General-purpose I/O | Configurable as GPIO, wake-up inputs, SPI signals, PWM outputs, or button scan lines |
| MSCL / MSDA | SPI clock / data | Primary serial interface for host communication and firmware updates |
| XCLK (P15) | External crystal input | Optional connection for high-accuracy timing reference (e.g., 32.768 kHz) |
Key Features
| Feature | Design Value |
|---|---|
| 3-channel active LF frontend | Enables real-time 3D field vector measurement for accurate key position detection inside/outside vehicle |
| Passive LF backup mode | Allows immobilizer authentication even with depleted battery by harvesting energy from vehicle LF field |
| Multi-mode crypto engine | Hardware-accelerated AES-128 and 96-bit encryption eliminates software overhead and timing side-channel risks |
| RGB LED PWM control | 3 independent PWM channels drive color-coded visual feedback without external driver IC |
| Ultra-low power management | Sub-μA standby current extends CR2032 battery life beyond 3 years in typical key fob usage |
Applications
| Automotive Key Fob | Door Handle Authentication Module |
|---|---|
Use Scenario: Compact, battery-powered remote key fob used for vehicle unlock, lock, trunk release, and panic alarm. IC Role / Device Role / Timing Role: Primary secure authentication controller handling LF challenge reception, cryptographic response generation, and UHF transmission. Use Value: Integrated memory and crypto eliminate need for external secure element; TSSOP38 footprint fits tight PCB space constraints. | Use Scenario: Embedded module inside vehicle door handle performing proximity detection and hand-gesture-triggered wake-up. IC Role / Device Role / Timing Role: LF field transmitter and RSSI analyzer determining key location relative to handle; initiates full authentication sequence. Use Value: 3-channel active LF interface enables sub-10 cm spatial resolution for reliable inside/outside discrimination. |
| Push-to-Start Engine Control Unit | Immobilizer Backup Transponder |
Use Scenario: In-cabin system verifying key presence before enabling ignition and starter motor engagement. IC Role / Device Role / Timing Role: UHF receiver and crypto verifier confirming authenticated key response; coordinates with body control module. Use Value: On-chip AES-128 and fast interrupt response (<10 μs) ensure <100 ms total authentication latency for seamless start experience. | Use Scenario: Fallback transponder mode activated when main battery is depleted; powered solely by vehicle LF field. IC Role / Device Role / Timing Role: Passive LF responder emulating legacy transponder protocol during immobilizer handshake. Use Value: Dual-mode LF interface allows single IC to serve both active key fob and passive backup roles - reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar keyless entry/go applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCF2951MTT/TPE080J | Includes integrated 3D security transponder; adds passive UHF receive capability | Required where bidirectional UHF communication (e.g., rolling code update) is needed alongside LF challenge | Select NCF2951MTT/TPE080J if transponder-level security and UHF RX are mandatory; otherwise NCF2952MTT/TPE080J reduces cost and complexity |
| PCF7953HV/1 | 8-bit architecture; lower memory (1 KB EEPROM, 8 KB ROM); no AES-128; single-channel LF | Suitable for legacy key fobs without 3D localization or high-security crypto requirements | Choose PCF7953HV/1 only for cost-sensitive, non-AES applications where 3D detection is unnecessary |
Compared with NCF2952MTT/TPE080J, NCF2951MTT/TPE080J adds transponder functionality and UHF RX at higher cost and power, while PCF7953HV/1 offers simpler 8-bit operation but lacks AES-128, 3D LF, and memory scalability - making NCF2952MTT/TPE080J the optimal balance of security, localization accuracy, and integration for next-gen key fobs.
Availability
NCF2952MTT/TPE080J is available at Aetrix Electronics and suitable for automotive key fob manufacturing, door handle proximity modules, and push-to-start engine control units requiring stable component supply across multi-year production cycles.
Supply support for NCF2952MTT/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, IoT, and secure identification solutions, with deep expertise in car access systems and embedded security.
The ACTIC-4G product line - including NCF2952MTT/TPE080J - was engineered specifically for secure, low-power, spatially aware keyless entry and go systems, targeting OEM-grade reliability and cryptographic compliance in automotive key fobs.
FAQ
What is the primary function of the NCF2952MTT/TPE080J in automotive keyless systems?
The NCF2952MTT/TPE080J serves as the central secure authentication controller in automotive key fobs, managing LF challenge reception, cryptographic response generation using AES-128 or 96-bit protocols, and UHF transmission. It integrates memory, crypto acceleration, and a 3-channel 125 kHz LF frontend to enable precise inside/outside detection - all within the NCF2952MTT/TPE080J's TSSOP38 package.
Does the NCF2952MTT/TPE080J support passive LF immobilizer mode?
Yes, the NCF2952MTT/TPE080J includes a dedicated passive LF interface that operates in backup mode when the coin-cell battery is depleted. This allows the device to function as a legacy transponder, drawing power from the vehicle's LF field to complete immobilizer authentication - a confirmed feature documented in NXP's ACTIC-4G functional specification for NCF2952MTT/TPE080J.
What memory resources are integrated into the NCF2952MTT/TPE080J?
The NCF2952MTT/TPE080J integrates 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 NXP ACTIC-4G datasheet revision dated April 2012, and directly support secure boot, key storage, and application execution within the NCF2952MTT/TPE080J.
How many I/O pins does the NCF2952MTT/TPE080J provide, and what are their key uses?
The NCF2952MTT/TPE080J provides up to 21 configurable I/O ports, including 8 dedicated wake-up/button inputs for low-power event detection and 2 SPI interfaces for host communication. Additional pins support RGB LED PWM control, external crystal input (XCLK), and analog sensing - all mapped to physical TSSOP38 pins as confirmed in the NCF2952MTT/TPE080J pin assignment table.
Is the NCF2952MTT/TPE080J pin-compatible with earlier NXP keyless ICs like the PCF7952?
No, the NCF2952MTT/TPE080J is not pin-compatible with the PCF7952. It uses a TSSOP38 package with different pin assignments, updated I/O mapping, and expanded peripheral routing (e.g., 3-channel LF inputs vs. single-channel in PCF7952). Migration requires PCB redesign and firmware adaptation - a distinction explicitly noted in NXP's ACTIC-4G migration guide for NCF2952MTT/TPE080J.
NCF2952MTT/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:
- -
NCF2952MTT/TPE080J FAQ
1.How can I place an order for NCF2952MTT/TPE080J through Aetrix?
Please submit a Request for Quotation (RFQ) for NCF2952MTT/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 NCF2952MTT/TPE080J reliable?
The price and inventory of NCF2952MTT/TPE080J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCF2952MTT/TPE080J is usually 5 days.
3.What payment methods are accepted for NCF2952MTT/TPE080J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCF2952MTT/TPE080J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCF2952MTT/TPE080J?
NCF2952MTT/TPE080J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCF2952MTT/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 NCF2952MTT/TPE080J?
For technical support, including NCF2952MTT/TPE080J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCF2952MTT/TPE080J requirements.
6.How does Aetrix verify that NCF2952MTT/TPE080J is sourced from the original manufacturer or authorized distributors?
All NCF2952MTT/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 NCF2952MTT/TPE080J meets industry standards.
7.What is the process for return or replacement of NCF2952MTT/TPE080J?
All NCF2952MTT/TPE080J units undergo pre-shipment inspection (PSI). If there is an issue with NCF2952MTT/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 NCF2952MTT/TPE080J part is unused and in its original packaging.
Return procedure for NCF2952MTT/TPE080J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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