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MCP9800 Datasheet(PDF) 1 Page - Microchip Technology |
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MCP9800 Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 30 page  2004 Microchip Technology Inc. DS21909B-page 1 MCP9800/1/2/3 Features • Temperature-to-Digital Converter • Accuracy with 12-bit Resolution: - ±0.5°C (typ.) at +25°C - ±1°C (max.) from -10°C to +85°C - ±2°C (max.) from -10°C to +125°C - ±3°C (max.) from -55°C to +125°C • User-selectable Resolution: 9 – 12 bit • Operating Voltage Range: 2.7V to 5.5V • 2-wire Interface: I2C™/SMBus Compatible • Operating Current: 200 µA (typ.) • Shutdown Current: 1 µA (max.) • Power-saving One-shot Temperature Measurement • Available Packages: SOT-23-5, MSOP-8, SOIC-8 Typical Applications • Personal Computers and Servers • Hard Disk Drives and Other PC Peripherals • Entertainment Systems • Office Equipment • Data Communication Equipment • Mobile Phones • General-purpose Temperature Monitoring Typical Application Description Microchip Technology Inc.’s MCP9800/1/2/3 family of digital temperature sensors converts temperatures between -55°C and +125°C to a digital word. They provide an accuracy of ±1°C (max.) from -10°C to +85°C. The MCP9800/1/2/3 family comes with user-program- mable registers that provide flexibility for temperature sensing applications. The register settings allow user- selectable 9-bit to 12-bit temperature measurement resolution, configuration of the power-saving Shutdown and One-shot (single conversion on command while in the Shutdown) modes and the specification of both temperature alert output and hysteresis limits. When the temperature changes beyond the specified limits, the MCP9800/1/2/3 outputs an alert signal. The user has the option of setting the alert output signal polarity as an active-low or active-high comparator output for thermostat operation, or as temperature event interrupt output for microprocessor-based systems. This sensor has an industry standard 2-wire, I2C™/ SMBus compatible serial interface, allowing up to eight devices to be controlled in a single serial bus. These fea- tures make the MCP9800/1/2/3 ideal for sophisticated multi-zone temperature-monitoring applications. Package Types PICmicro® VDD R Microcontroller MCP9800/02 GND VDD ALERT SDA SCLK 4 1 2 3 5 I/O Port RPULL-UP PIC16F737 SDA GND ALERT SCLK GND VDD ALERT SDA SCLK 4 MCP9800 MCP9802 1 2 3 5 SOT-23-5 MCP9801 MCP9803 1 2 3 4 8 7 6 5 SOIC, MSOP A0 VDD A1 A2 MCP9800/02A0: A2, A1, A0 are internally set to (0, 0, 0) MCP9800/02A5: A2, A1, A0 are internally set to (1, 0, 1) MCP9802/03: Serial Bus time-out 35 ms (typ.) 2-Wire High-Accuracy Temperature Sensor |
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