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NEW PRODUCT NEWS—edited by Harv Weiner

Fixed Code Encoder

The Microchip HCS101 fixed-code encoder provides unidirectional remote control in nonsecure or limited-security applications. It is ideal for applications such as toys, fan and lighting control, entertainment systems, material-handling systems and smoke detectors. The HCS101 fixed-code encoder is pin compatible with Microchipıs HCS201 KEELOQ code-hopping encoder, allowing users to easily migrate their design to a higher level of security. Traditional high-security code-hopping applications that may be complemented with a lower-cost limited-security fixed-code implementation include automotive alarm systems, automotive immobilizers, gate and garage door openers, identity tokens, and burglar alarm systems.

The HCS101 has a 66-bit transmission code that reduces the threat of code scanning. It operates over a wide voltage range of 3.5 V to 13 V and has three button inputs in an 8-pin configuration. This feature allows the system designer the freedom to use seven functions. The oscillator, timing components, EEPROM, button input, pull-down resistors, and low-battery detection circuitry are all integrated on the HCS101. The only components required for device operation are the buttons, battery, and RF circuitry.

The use of the HCS101 requires a compatible decoder, which is typically a PICmicro microcontroller solution with firmware. Microchip provides PlCmicro firmware routines that accept transmissions from the HCS101. These routines provide systems designers with the means to develop their own decoding system.

Pricing for the HCS101 in 1,000-unit quantities is $0.70 each in 8-pin PDIP or SOIC packages.

Microchip Technology, Inc.
(480) 786-7200
Fax: (480) 899-9210
www.microchip.com

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