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Microchip targets secure remote keyless entry designs

Microchip has announced the first in a range of single chip devices that integrate an eXtreme low power (xlp) 8bit PIC microcontroller with a sub GHz rf transmitter.

The PIC12LF1840T48A incorporates a combination of features in a single 14pin TSSOP package. This, says Microchip, makes it suitable for space, power and cost constrained applications, such as remote keyless entry fobs for automobiles, garage doors and a range of home security systems. The device is also optimised to run Microchip's royalty free KEELOQ advanced code hopping security technology. In addition to secure wireless communication, the PIC12LF1840T48A is designed to maximise battery life via a low operating voltage of 1.8V. The XLP mcu also has low sleep current consumption and is integrated with the transmitter to enable fast wake up and send functionality that takes advantage of the mcu's 8MIPS operation. Samples are available immediately with volume production expected in January 2012.