MICRF302 Parallel Encoder General Description QwikRadio The MICRF302 is a parallel encoder which works with QwikRadio family radios to significantly shorten design Features time for RF products. The part is easy to use, provides Small form factor: 10-pin MLF package more communication distance, and it is extremely stable over operating temperature and operating voltage range. Wide operating voltage range: 1.8 V to 3.6 V The MICRF302 Parallel Encoder makes the transmission Low current consumption: 130A operating, 0.1A Standby of encoding data simple. This device encodes data from four input pins, which have internal pull-up resistors and On-chip clock generation requires no external deglitching circuitry. These inputs can be connected to components switches or external circuitry. The MICRF302 outputs Unique 20-bit internal address allows up to 1 million encoded data serially, and can be connected directly to combinations to differentiate from adjacent encoders. any QwikRadio transmitter without any additional Selectable data rates: 0.6, 1, 3, 4.8kbps components. 8-bit industry-standard CRC provides robust data The MICRF302 gives communication reliability through protection built-in CRC (cyclic redundancy check). The MICRF302 On-chip pullup resistors needs no external components for clock generation. Unlike other encoders on the market, there is no shift in On-chip deglitch makes it easy to use low-cost switches performance with associated changes in operating temperature nor operating voltage. The internal clock provides stable data operations over a wide temperature Applications range of -40C to +85C. MICRF302 can operate from Light switches 1.8 V to 3.6 V. The MICRF302 is battery friendly, and will Appliance controls work with alkaline, NiCd, NiMh, lithium ion, or lithium batteries. Christmas lights Fan and HVAC switches Remote half switches Garage door openers Remote controls Toys Lawn watering sensors Robust, unidirectional, low cost, low power, low data rate communications links Ordering Information Part Number Marking Code Temperature Range Package MICRF302YML XA02 -40C to +85C 10-pin 2.5mm 2.5mm MLF Note: 1. MLF is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free. QwikRadio is a registered trademark of Micrel, Inc. MLF and MicroLead Frame are registered trademark of Amkor Technology Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MICRF302 Typical Application D0 DOUT D1 MICRF302 DO TRANSMITTER RECEIVER MCU D2 ENCODER TXEN D3 Figure 1. RF Link Figure 2. MICRF302 and Micrel Transmitter M9999-032610-A March 2010 2