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MCP9802

Microchip Technology
Part Number MCP9802
Manufacturer Microchip Technology
Description 2-Wire High-Accuracy Temperature Sensor
Published Mar 1, 2010
Detailed Description MCP9800/1/2/3 2-Wire High-Accuracy Temperature Sensor Features: • Temperature-to-Digital Converter • Accuracy with 12-b...
Datasheet PDF File MCP9802 PDF File

MCP9802
MCP9802

Overview
MCP9800/1/2/3 2-Wire High-Accuracy Temperature Sensor Features: • Temperature-to-Digital Converter • Accuracy with 12-bit Resolution: - ±0.
5°C (typical) at +25°C - ±1°C (maximum) from -10°C to +85°C - ±2°C (maximum) from -10°C to +125°C - ±3°C (maximum) 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 (typical) • Shutdown Current: 1 µA (maximum) • 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 VDD MCP9800/02 R VDD 1 GND 2 ALERT 3 5 SDA 4 SCLK RPULL-UP I2C™ Port PIC® Microcontroller PIC16F737 I/O Port 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 (maximum) from -10°C to +85°C.
The MCP9800/1/2/3 family comes with user-programmable 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 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 device...


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