Tiny Single Chip Passive Keyless Entry/Go Solution | NXP Semiconductors

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Tiny Single Chip Passive Keyless Entry/Go Solution

NCF29A1MHN

The NCF29A1 is a very compact single chip solution, suited for automotive applications with combined vehicle immobilization and keyless entry/start functions. The device incorporates a Security Transponder, PKE LF interface, UHF Transmitter and RISC Controller on the same chip and requires only a few external components.

The device transponder operation is compatible with the Security Transponder family PCF7937/38/39. The Transponder circuitry does not require any battery supply and full operation is granted in case of a battery low condition. The device comes in a tiny 32 pin QFN Package demanding little board space (5 mm x 5 mm). The RISC Controller is powered by NXP's low power 16-Bit MICRO RISC KERNEL (MRK III). The device features 8 I/O ports allowing for up to eight command button inputs.

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Product Details

Features

  • Single-chip Security Transponder and Keyless Entry solution with on-chip multi-channel UHF Transmitter (310-447 MHz, 868/915 MHz upon request)
  • PCF7938/39 Family compatible transponder operation
  • 16 Bit RISC Architecture (MRK III)
  • Up to eigth command buttons
  • Low-power RISC programmable device operation
  • Programmable ASK/FSK modulation characteristics
  • EEPROM for extended data storage
  • High sensitive three axis (3D) LF front-end
  • Low power LF wake-up and data processing
  • Low power consumption for longlasting battery
  • Single Lithium cell operation, 1.8 V to 3.6 V
  • Highly integrated for minimum board space and low bill of materials
  • Highly compact HVQFN package
  • 70% size reduction due to monolithic one-chip solution
  • Allows high design flexibility for car keys and any other wearables and portables
  • High sensitivity of the LF frontend with best-in-class stable low quiescent current
  • Longer Immobilizer range for more user friendly Immobilizer backup function and different placement of Immobilizer backup reader antenna
  • Ultra low power IC is also extending battery life by up to 40%
  • Usage of AES effectively hampers key cloning vehicle theft
  • Key Localization (within 5 cm) with the 3D LF interface using RSSI (receive signal strength indicator) over wide dynamic range
  • Passive Keyless Entry Go
  • Remote car management
  • Immobilizer
N true 0 PSPNCF29A1MHNen 1 Package Information Package Information t790 1 en_US en_US en Package Information Package Information 1 1 1.1 English 1455079158440714622017 PSP 161.1 KB None None documents None 1455079158440714622017 /docs/en/package-information/SOT617-3.pdf 161083 /docs/en/package-information/SOT617-3.pdf SOT617-3 documents N N 2016-06-08 plastic thermal enhanced very thin quad flat package; no leads; 32 terminals; body 5 x 5 x 0.85 mm /docs/en/package-information/SOT617-3.pdf /docs/en/package-information/SOT617-3.pdf Package Information N 302435339416912908 2025-02-07 pdf N en Jun 8, 2016 302435339416912908 Package Information Y N plastic thermal enhanced very thin quad flat package; no leads; 32 terminals; body 5 x 5 x 0.85 mm false 0 NCF29A1MHN downloads en true 1 Y PSP Package Information 1 /docs/en/package-information/SOT617-3.pdf 2016-06-08 1455079158440714622017 PSP 1 Jun 8, 2016 Package Information None /docs/en/package-information/SOT617-3.pdf English documents 161083 None 302435339416912908 2025-02-07 N /docs/en/package-information/SOT617-3.pdf plastic thermal enhanced very thin quad flat package; no leads; 32 terminals; body 5 x 5 x 0.85 mm /docs/en/package-information/SOT617-3.pdf documents 302435339416912908 Package Information N en None Y pdf 1.1 N N plastic thermal enhanced very thin quad flat package; no leads; 32 terminals; body 5 x 5 x 0.85 mm 161.1 KB SOT617-3 N 1455079158440714622017 true Y Products

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