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TC773.3MCTTR Datasheet(PDF) 1 Page - Microchip Technology |
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TC773.3MCTTR Datasheet(HTML) 1 Page - Microchip Technology |
1 / 22 page 2002 Microchip Technology Inc. DS20092A-page 1 M TC77 Features • Digital Temperature Sensing in 5-Pin SOT-23A and 8-Pin SOIC Packages • Outputs Temperature as a 13-Bit Digital Word • SPI and MICROWIRE™ Compatible Interface • Solid State Temperature Sensing • ±1°C (max.) accuracy from +25°C to +65°C • ±2°C (max.) accuracy from -40°C to +85°C • ±3°C (max.) accuracy from -55°C to +125°C • 2.7V to 5.5V Operating Range •Low Power - 250 µA (typ.) Continuous Conversion Mode - 0.1 µA (typ.) Shutdown Mode Typical Applications • Thermal Protection for Hard Disk Drives and Other PC Peripherals • PC Card Devices for Notebook Computers • Low Cost Thermostat Controls • Industrial Control • Office Equipment • Cellular Phones • Thermistor Replacement Block Diagram Description The TC77 is a serially accessible digital temperature sensor particularly suited for low cost and small form- factor applications. Temperature data is converted from the internal thermal sensing element and made avail- able at anytime as a 13-bit two’s compliment digital word. Communication with the TC77 is accomplished via a SPI and MICROWIRE compatible interface. It has a 12-bit plus sign temperature resolution of 0.0625°C per Least Significant Bit (LSb). The TC77 offers a tem- perature accuracy of ±1.0°C (max.) over the tempera- ture range of +25°C to +65°C. When operating, the TC77 consumes only 250 µA (typ.). The TC77’s Con- figuration register can be used to activate the low power Shutdown mode, which has a current consump- tion of only 0.1 µA (typ.). Small size, low cost and ease of use make the TC77 an ideal choice for implementing thermal management in a variety of systems. Package Types Typical Application TC77 Diode Temperature Sensor VDD SCK CS Serial Port Interface SI/O 13-Bit Sigma Delta A/D Converter Register Temperature Register Internal Configuration Manufacturer ID Register VSS SOT-23-5 1 SOIC 1 VDD VSS SCK SI/O CS TC77 TC77 SCK SI/O VSS NC CS VDD NC NC AN0 SCK SDI CS SCK SI/O TC77 0.1µF VDD VSS VDD PICmicro® MCU Thermal Sensor with SPI™ Interfa ce |
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