DS18B20X

DS18B20X Flipchip 1-Wire Digital Thermometer ® www.dalsemi.com www.datasheet4u.com FEATURES Unique 1-wire interface requires only one port pin for communication Each device has a unique 64-bit serial code stored in an on-board ROM Multi-drop capability simplifies distributed temperature sensing applications Requires no external components Can be powered from data line. Power supply range is 3.0V to 5.5V Measures temperatures from –55°C to +125°C (–67°F to +257°F) ±2.0°C accuracy from 0°C to +70°C Thermometer resolution is user-selectable from 9 to 12 bits Converts temperature to 12-bit digital word in 750 ms (max.) User-definable nonvolatile alarm settings Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition) Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system PIN ASSIGNMENT (TOP VIEW) GND VDD 28rrd GND DQ Branding legend: 28 = family code rr = revision code (i.e., B6) d = one letter date code See Mechanical Specification (page 21) for package dimensions. PIN DESCRIPTION GND - Ground DQ - Data In/Out VDD - Power Supply Voltage DESCRIPTION The DS18B20X Digital Thermometer provides 9 to 12–bit centigrade temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18B20X communicates over a 1-wire bus that by definition require...