Wireless UART chipset embeds complete RF serial-communication capabilities

Cutting the wires on any system currently using serial cable communications is now fast and easy with the XR18W750 and XR18W753; a wireless-UART chipset from Exar.

Together, the XR18W750 UART controller and XR18W753 wireless transceiver increase equipment mobility, simplify installation and accelerate time-to-market. They can be designed onto existing boards, or integrated into add-on wireless adapter cards.

The XR18W753 RF transceiver uses Direct-Sequence Spread-Spectrum (DSSS) technology to achieve robust operation in signal-congested RF environments. Extensive hardware support for packet handling, data buffering, packet timing, RSSI, energy detection, link-quality indication, clear-channel assessment, FCS computation, and CRC detection is also embedded. The transceiver can also be used separately with MCUs via a simple two-wire I²C interface.

The XR18W750 UART controller includes an embedded 8051 microprocessor, which provides the power to process the protocol framing for data transmission and to handle error processing. With proprietary firmware included, the chipset provides a complete solution to replace existing cable-based links.

Support for point-to-point, point-to-multipoint, and broadcast-communication modes is included, allowing any system currently using a UART and RS-232 or RS-485 transceiver to be upgraded.

 

FEATURES 868MHz to 956MHz operation Parallel and serial interfaces to any host system Programmable RF output power Embedded 128-bit Advanced Encryption Standard (AES) engine 32kbytes RAM system memory

APPLICATIONS Point-Of-Sale (POS) equipment Security systems Data-collection terminals Data monitor equipment

 

 

Exar / XR18W750 & XR18W753