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Name: PCF7935AS/3851,122
Brand: NXP USA Inc.
SKU: PCF7935AS/3851,122
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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NXP USA Inc. PCF7935AS/3851,122

Part No.:: PCF7935AS/3851,122

Manufacturer:: NXP USA Inc.

Package:

Datasheet:

Description:: RFID TAG R/W 125KHZ PLLMC

In Stock:: 2149

Quantity:: Add To Cart

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PCF7935AS/3851,122 Specifications

Package/Case:
Packaging:
Bulk
Series:
-
ProductStatus:
Obsolete
Style:
-
Technology:
-
Frequency:
125kHz
MemoryType:
Read/Write
WritableMemory:
-
Standards:
-
OperatingTemperature:
-

PCF7935AS/3851,122 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including PCF7935AS/3851,122 price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for PCF7935AS/3851,122 to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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PCF7935AS/3851,122 information

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PCF7935AS/3851,122 Typical application Circuitry

PCF7935AS 3851,122

The PCF7935AS/3851,122 is an integrated circuit chip designed primarily for use in security and immobilizer systems. This chip is widely utilized in automotive applications, particularly in keyless entry systems and as part of the immobilizer system to prevent unauthorized vehicle use. The chip features sophisticated encryption algorithms and unique ID capabilities, making it an essential component for enhancing vehicle security.

Applications

The PCF7935AS/3851,122 is predominantly found in the automotive sector, serving as a crucial element in immobilizer systems. Its ability to store unique identification data and support for encryption makes it ideal for anti-theft systems in cars, motorcycles, and even some high-security building access controls.

Parameter Features

The PCF7935AS/3851,122 boasts several significant parameter features, including a wide operating voltage range, low power consumption, and robust security protocols. It supports various encryption algorithms, has a built-in memory for key storage, and operates in a wide range of temperatures, making it suitable for the demanding environments of automotive applications.

Detailed Circuit Connection for an Immobilizer System

Power Supply and Grounding

- Firstly, ensure the PCF7935AS/3851,122 is connected to a stable power source. The VSS pin needs to be connected to ground, and the VCC pin needs to be attached to a power source that falls within the operational voltage range of the chip. This process is essential to the chip's steady operation.

Antenna Connection

- Secondly, the antenna should be connected to the designated RF output pin. This connection is vital for the PCF7935AS/3851,122 to communicate with the key fob or reader through radio frequencies, enabling the wireless data exchange necessary for the immobilizer system to function.

Data Interface with the Control Unit

- Thirdly, the data output pin (DO) of the PCF7935AS/3851,122 must be interfaced with the vehicle's central control unit (CCU). This connection allows the CCU to receive the encrypted data from the chip and validate it against stored keys to authorize vehicle operation.

Encryption Key Programming

- Fourthly, for initial setup, the PCF7935AS/3851,122 requires programming with a unique encryption key. This process involves connecting the chip to a programmer device through its serial interface pins (SDA and SCL for I²C communication). Proper key programming is essential for the security of the immobilizer system.

Signal Decoupling

- Fifthly, incorporate decoupling capacitors near the power supply pins of the PCF7935AS/3851,122. This measure reduces noise in the power supply to the chip, ensuring reliable operation and reducing the risk of erroneous behavior due to electrical interference.

Design Considerations

When designing a circuit with the PCF7935AS/3851,122, it is crucial to consider several factors:

- Electromagnetic Interference (EMI): Implement design practices to minimize EMI, which could affect the chip's ability to communicate effectively with the key fob or reader.

- Security Protocols: Ensure the encryption keys and algorithms used are robust and securely programmed to prevent unauthorized access or cloning of the immobilizer system.

- Power Supply Stability: Verify the power supply to the chip is stable and within specified voltage ranges to prevent damage and ensure consistent performance.

- Environmental Durability: Choose components and design the circuit to withstand the environmental conditions where the device will operate, such as temperature extremes and vibrations in automotive applications.

By carefully addressing these design considerations and accurately connecting the PCF7935AS/3851,122 within the immobilizer system, designers can create secure, reliable, and effective anti-theft solutions for automotive applications.

PCF7935AS/3851,122 FAQ

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3. Are the PCF7935AS/3851,122 price and inventory displayed accurate?

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6. What is the process for return or replacement of PCF7935AS/3851,122?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the PCF7935AS/3851,122 we delivered, we will accept the replacement or return of the PCF7935AS/3851,122 only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of PCF7935AS/3851,122.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations