A device claimed to provide embedded system designers with a very low-cost method of adding IrDA (Infrared Data Association)-Standard wireless connectivity to their systems has been announced by Microchip Technology. The MCP2140 is a fixed speed 9600 Baud IrDA-Standard protocol stack controller designed for high-volume applications such as wireless LANs, modems, cellphone peripherals, wireless handheld data collection systems, door locks and fleet management systems among others.
When used with the recommended discrete transceiver implementation, this device enables a complete IrDA-Standard wireless link (protocol handling plus transceiver) to be added to an embedded system while typically consuming less than 100 mA additional current. In comparison, many industry-standard integrated transceivers alone have current consumption values greater than 1,0 mA.
With the MCP2140 Microchip uses the same technology that embeds the complex IrDA-Standard protocol stack on its other devices, however, the communications speed is lowered and the user-interface is simplified to target low-cost, high-volume embedded applications. In addition, the drive has an automatic low-power function that reduces the power consumption when there is no activity on the link. In this low-power mode, the MCP2140 has a typical current consumption of less than 25 µA, making the addition of IrDA-Standard links to battery applications easy.
The MCP2140 comes in an 18-pin PDIP or SOIC package.
For more information contact Avnet Kopp, 011 809 6100, Memec SA, 011 897 8600, or Tempe Technologies, 011 452 0530.
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