PCF7939MA/C0BC0800

Radiofrequency Identification (RFID) is a technology that utilizes the use of a radio signal to enable the reading of information stored in a miniature transponder. RFID transponders, tags, and readers are used for a variety of applications in industries such as manufacturing, transport, logistics, warehousing, and more. One of the more commonly used types of RFID tags, the PCF7939MA/C0BC0800, is a read/write transponder intended for use in automotive applications.

PCF7939MA/C0BC0800 Application Field

The PCF7939MA/C0BC0800 is designed to be used as an automotive transponder for immobilizer systems. It is a small, flat transponder intended to be placed inside the vehicle. The chip also supports other automotive applications, such as door access control, body control systems, alarm system control, and so on. In addition to automotive applications, the PCF7939MA/C0BC0800 can also be used for other applications such as asset tracking and access control.

PCF7939MA/C0BC0800 Working Principle

The PCF7939MA/C0BC0800 is a read/write transponder working on a frequency of 125 kHz. It contains a unique 48-bit serial number or ID code. The transponder can be read, written, and erased using a special reader, such as an RFID reader. The transponder contains two memory banks that can store data or code up to 32 bits in length. The data can be written to, read from, or erased when used with an appropriate reader.

When the PCF7939MA/C0BC0800 is placed within the signal range of a reader, it will pick up the reader’s electromagnetic signal. The transponder will then transform the signal into electricity to power up and respond with its ID code or stored data. When the reader transmits its request to the transponder, it will send back the requested information, or perform the desired data write, erase, or update operation.

Conclusion

The PCF7939MA/C0BC0800 transponder is a chip designed for use in automotive applications. It is a read/write transponder working on a frequency of 125 kHz and containing a unique 48-bit serial number. It can be used for a variety of applications, such as door access control, body control systems, alarm system control, asset tracking, and more. The transponder works by transforming the reader’s electromagnetic signal into electricity and then sending back the requested information or performing the desired operation.