My Inquiry
My Account
NXP Semiconductors NCF2952ETT/T0E080J
- Part No.:
- NCF2952ETT/T0E080J
- Manufacturer:
- NXP Semiconductors
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- -
- Datasheet:
-
NCF2952ETT/T0E080J.pdf
- Description:
- IC REMT KEYLSS ENT 125KZ 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,536
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCF2952ETT/T0E080J 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 (1D), passive LF backup for immobilizer, 2 KB EEPROM, 16 KB EROM + 8 KB ROM, and 512-byte RAM - deployed in automotive door handle proximity detection and push-to-start authentication systems.
For engineers reviewing the NCF2952ETT/T0E080J datasheet, NCF2952ETT/T0E080J pinout, NCF2952ETT/T0E080J application, or NCF2952ETT/T0E080J equivalent, key selection considerations include LF sensitivity for inside/outside detection accuracy, multi-mode crypto support (AES-128, 96-bit) for secure challenge-response, UHF transmitter interface compatibility, TSSOP38 package constraints, and wake-up I/O count for button/switch integration.
Technical Context
The NCF2952ETT/T0E080J implements a dedicated 16-bit RISC architecture optimized for ultra-low-power operation during LF polling cycles and fast wake-up response. It integrates a 3-channel active LF frontend supporting simultaneous 125 kHz field generation across orthogonal axes, plus a separate passive LF receiver path for immobilizer fallback mode.
Its security subsystem includes a hardware-accelerated multi-mode crypto unit supporting AES-128, 96-bit protocols, and legacy car access algorithms, while the modulator, RC oscillator, and PWM blocks enable direct RGB LED drive and UHF transmitter control without external timing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC microcontroller - enables deterministic real-time execution of LF polling, RSSI calculation, and crypto operations |
| LF Interface | 3-channel active 125 kHz + 1-channel passive - supports 1D spatial detection and immobilizer backup without external transceiver |
| Memory | 2 KB EEPROM + 16 KB EROM + 8 KB ROM + 512 B RAM - sufficient for secure firmware, key storage, and application logic with no external memory required |
| Crypto Support | AES-128, 96-bit, and standard car access protocols - meets OEM requirements for mutual authentication in keyless entry and engine start sequences |
| I/O Count | Up to 21 I/O ports including 8 wake-up inputs - accommodates door handle sensors, buttons, buzzer, and RGB LED control in compact TSSOP38 layout |
| Package | TSSOP38 - surface-mount footprint compatible with automotive PCB assembly standards and thermal constraints |
Pinout & Package
TSSOP38 package with 0.5 mm pitch, 12.5 mm × 4.4 mm body, and exposed thermal pad (not electrically connected). RoHS-compliant, AEC-Q100 qualified for automotive ambient temperature range (−40 °C to +105 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDC / VSS | Core power supply / ground | Supplies digital core at 1.8–3.6 V; decoupling required per automotive EMC guidelines |
| VBAT / VBATA / VSSA | Battery analog supply / ground | Direct connection to 3 V coin cell; powers LF frontend and ADC independently for stable sensing |
| IN1P/IN1N–IN3P/IN3N | Differential LF antenna inputs | Three independent 125 kHz receive channels for 3D field analysis and precise key localization |
| P10–P34 | Configurable I/O ports | Includes 8 wake-up capable pins for door handle touch sensors and up to 3 PWM outputs for RGB LED status indication |
| MSCL / MSDA | SPI clock/data | Supports external UHF transceiver (e.g., PCF790 or PQJ7980) for encrypted UHF response transmission |
Key Features
| Feature | Design Value |
|---|---|
| 3-channel active LF frontend | Enables 1D proximity detection with sub-10 cm resolution using orthogonal coil excitation and RSSI-based triangulation |
| Multi-mode crypto unit | Hardware acceleration for AES-128 and 96-bit protocols reduces authentication latency to <150 ms per challenge-response cycle |
| Passive LF backup mode | Allows immobilizer functionality even with depleted key battery by harvesting energy from vehicle LF field |
| Integrated PWM for RGB LEDs | Drives three-color status indicators directly without external driver IC, reducing BOM count and board area |
| UHF transmitter interface | Standard SPI interface compatible with NXP PCF790 and PQJ7980 transceivers for seamless UHF response packet generation |
Applications
| Door Handle Proximity Detection | Push-to-Start Engine Authentication |
|---|---|
Use Scenario: Driver approaches vehicle and places hand on door handle, triggering LF field emission and key wake-up. IC Role / Device Role / Timing Role: NCF2952ETT/T0E080J acts as LF base station controller, performing real-time RSSI measurement and 3D field analysis to confirm key presence within 30 cm. Use Value: Enables reliable unlock without physical button press; achieves <200 ms latency from hand contact to door actuation. | Use Scenario: Driver sits inside vehicle and presses start button; system verifies key is inside cabin before enabling ignition. IC Role / Device Role / Timing Role: NCF2952ETT/T0E080J executes challenge-response protocol via LF/UHF handshake, validating key authenticity and location. Use Value: Prevents unauthorized engine start when key is outside cabin; supports dual authentication (entry + start) with shared crypto keys. |
| Immobilizer Fallback Mode | RGB Status Feedback System |
Use Scenario: Key battery is critically low; vehicle initiates passive LF interrogation to power key transponder wirelessly. IC Role / Device Role / Timing Role: NCF2952ETT/T0E080J switches to passive LF receive mode, decoding immobilizer ID from harvested energy signal. Use Value: Maintains security-critical immobilizer function without requiring key battery replacement - extends usable life beyond 5 years. | Use Scenario: Vehicle provides visual feedback during key detection, authentication, and error states (e.g., low battery, out-of-range). IC Role / Device Role / Timing Role: NCF2952ETT/T0E080J drives RGB LED via integrated 3-channel PWM, synchronizing color transitions with protocol state machine. Use Value: Eliminates need for external LED driver; enables precise, low-latency status indication aligned with LF/UHF event timing. |
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/T0E080J | Includes integrated 3D security transponder; NCF2952ETT/T0E080J lacks on-die transponder and requires external transponder IC | Used where full 3D key authentication (including transponder ID) is required on same die; NCF2952ETT/T0E080J targets cost-optimized 1D base station only | Select NCF2951ETT/T0E080J if transponder integration reduces system-level component count; otherwise NCF2952ETT/T0E080J offers lower BOM cost for base station-only designs |
| PCF7953ETT/T0E080J | 8-bit microcontroller core, 125 kHz 3D-LF frontend, no AES-128 crypto; smaller memory (1 KB EEPROM, 8 KB ROM) | Legacy keyless entry systems without push-to-start or high-security crypto requirements | Choose PCF7953ETT/T0E080J for backward-compatible upgrades where AES-128 and 16-bit performance are not mandated |
Compared with NCF2952ETT/T0E080J, NCF2951ETT/T0E080J adds transponder capability at higher die cost and power, while PCF7953ETT/T0E080J trades crypto strength and processing headroom for legacy compatibility and lower gate count - making NCF2952ETT/T0E080J optimal for new 1D base station designs requiring AES-128 and extended memory.
Availability
NCF2952ETT/T0E080J is available at Aetrix Electronics and suitable for automotive keyless entry systems, push-to-start authentication modules, and immobilizer base stations requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle support.
Supply support for NCF2952ETT/T0E080J 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 ACTIC-4G family, including NCF2952ETT/T0E080J, was designed specifically for next-generation automotive keyless entry/go systems requiring high LF sensitivity, low-power operation, and hardware-accelerated cryptographic authentication.
FAQ
What is the primary function of the NCF2952ETT/T0E080J in a keyless entry system?
The NCF2952ETT/T0E080J serves as the LF base station controller in automotive keyless entry/go systems. It generates and analyzes 125 kHz magnetic fields to detect and locate the key fob, performs secure challenge-response authentication using its hardware crypto unit, and interfaces with an external UHF transceiver to complete the unlock or engine start sequence. Its 3-channel active LF frontend enables precise 1D proximity detection critical for reliable hand-on-handle operation.
Does the NCF2952ETT/T0E080J include an integrated transponder for immobilizer functions?
No, the NCF2952ETT/T0E080J does not integrate a transponder. It supports passive LF backup mode for immobilizer communication but requires an external transponder IC (e.g., PCF7961) to fulfill full immobilizer ID exchange. In contrast, the pin-compatible NCF2951ETT/T0E080J includes an integrated 3D security transponder. The NCF2952ETT/T0E080J is optimized for base station-only roles where transponder functionality resides separately.
What memory resources are available on the NCF2952ETT/T0E080J for customer firmware and security keys?
The NCF2952ETT/T0E080J provides 2 KB of EEPROM for persistent key storage and configuration data, 16 KB of EROM and 8 KB of ROM for customer application code and boot firmware, and 512 bytes of RAM for runtime variables and stack operations. This memory map supports complex authentication stacks, RSSI calibration tables, and multi-protocol crypto libraries without external memory expansion.
Which UHF transceivers are confirmed compatible with the NCF2952ETT/T0E080J SPI interface?
The NCF2952ETT/T0E080J SPI interface is confirmed compatible with NXP's PCF790 and PQJ7980 UHF transceivers, as documented in the ACTIC-4G reference design and application notes. These devices support 315/433/868/915 MHz bands and integrate modulation/demodulation, PA, and LNA functions. Interfacing requires MSCL/MSDA signals, proper timing alignment per SPI mode 0, and matching voltage levels (1.8–3.6 V).
Is the NCF2952ETT/T0E080J qualified for automotive use, and what environmental specifications does it meet?
Yes, the NCF2952ETT/T0E080J is AEC-Q100 qualified for Grade 2 (−40 °C to +105 °C ambient) and manufactured in an IATF 16949-certified facility. It meets automotive EMC requirements per ISO 11452-2/4 and electrostatic discharge tolerance per ISO 10605 (±8 kV contact, ±15 kV air). The TSSOP38 package includes moisture sensitivity level (MSL) 3 rating and is compatible with lead-free reflow profiles.
NCF2952ETT/T0E080J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- -
- Frequency:
- 125kHz
- Standards:
- -
- Interface:
- SPI
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
NCF2952ETT/T0E080J FAQ
1.How can I place an order for NCF2952ETT/T0E080J through Aetrix?
Please submit a Request for Quotation (RFQ) for NCF2952ETT/T0E080J 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/T0E080J reliable?
The price and inventory of NCF2952ETT/T0E080J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCF2952ETT/T0E080J is usually 5 days.
3.What payment methods are accepted for NCF2952ETT/T0E080J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCF2952ETT/T0E080J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCF2952ETT/T0E080J?
NCF2952ETT/T0E080J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCF2952ETT/T0E080J 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/T0E080J?
For technical support, including NCF2952ETT/T0E080J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCF2952ETT/T0E080J requirements.
6.How does Aetrix verify that NCF2952ETT/T0E080J is sourced from the original manufacturer or authorized distributors?
All NCF2952ETT/T0E080J 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/T0E080J meets industry standards.
7.What is the process for return or replacement of NCF2952ETT/T0E080J?
All NCF2952ETT/T0E080J units undergo pre-shipment inspection (PSI). If there is an issue with NCF2952ETT/T0E080J, 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/T0E080J part is unused and in its original packaging.
Return procedure for NCF2952ETT/T0E080J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCF2952ETT/T0E080J 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…
