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MIC184BM Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC184BM Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 21 page November 2000 1 MIC184 MIC184 Micrel MIC184 Local/Remote Thermal Supervisor Advance Information General Description The MIC184 is a versatile digital thermal supervisor capable of measuring temperature using either its own internal sensor or an inexpensive external sensor. A 2-wire serial interface is provided to allow communication with either I2C or SMBus masters. This device is a pin-for-pin and software compatible upgrade for the industry standard LM75. Additional features include remote temperature measure- ment capability, and interrupt status and mask bits in the chip’s configuration register for software polling. The open- drain interrupt output pin can be used as either an overtem- perature alarm or thermostatic control signal. Three program- mable address pins permit users to multidrop up to 8 devices along the 2-wire bus, allowing simple distributed temperature sensing networks. Superior performance, low power and small size makes the MIC184 an excellent choice for the most demanding thermal management applications. Typical Application DATA 1 2 3 8 4 5 6 7 FROM SERIAL BUS HOST OPTIONAL REMOTE TEMPERATURE SENSOR 2200pF MIC184 CLK INT Data 3.0V to 3.6V VDD Clock Interrupt VDD 3 × 10k A2/T1 A1 A0 GND 0.1 µF ceramic 2-Channel SMBus Temperature Measurement System Features • Measures local and remote temperatures • Pin and software backward compatible to LM75 • 9-bit sigma-delta ADC • 2-wire I2C/SMBus compatible interface • Programmable thermostatic settings for either internal or external zone • Open-drain comparator/interrupt output pin • Interrupt mask and status bits • Low-power shutdown mode • Fail-safe response to diode faults • 2.7V to 5.5V power supply range • Up to 8 devices may share the same bus • 8-Lead SOP and MSOP Packages Applications • Desktop, Server and Notebook Computers • Printers and Copiers • Test and measurement equipment • Consumer electronics Ordering Information Part Number Temperature Range Package MIC184BM –55 °C to +125°C 8-lead SOP MIC184BMM –55 °C to +125°C 8-lead MSOP Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com |
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