MCP9802A5T-M/OT Microchip

2 I C Port MCP9800/1/2/3 2-Wire High-Accuracy Temperature Sensor Features Description Temperature-to-Digital Converter Microchip Technology Inc.s MCP9800/1/2/3 family of digital temperature sensors converts temperatures Accuracy with 12-bit Resolution: between -55C and +125C to a digital word. They - 0.5C (typ.) at +25C provide an accuracy of 1C (max.) from -10C to - 1C (max.) from -10C to +85C +85C. - 2C (max.) from -10C to +125C The MCP9800/1/2/3 family comes with user-program- - 3C (max.) from -55C to +125C mable registers that provide flexibility for temperature User-selectable Resolution: 9 12 bit sensing applications. The register settings allow user- Operating Voltage Range: 2.7V to 5.5V selectable 9-bit to 12-bit temperature measurement 2 resolution, configuration of the power-saving Shutdown 2-wire Interface: I C/SMBus Compatible and One-shot (single conversion on command while in Operating Current: 200 A (typ.) the Shutdown) modes and the specification of both Shutdown Current: 1 A (max.) temperature alert output and hysteresis limits. When Power-saving One-shot Temperature the temperature changes beyond the specified limits, Measurement the MCP9800/1/2/3 outputs an alert signal. The user Available Packages: SOT-23-5, MSOP-8, SOIC-8 has the option of setting the alert output signal polarity as an active-low or active-high comparator output for Typical Applications thermostat operation, or as temperature event interrupt output for microprocessor-based systems. Personal Computers and Servers 2 This sensor has an industry standard 2-wire, I C/ Hard Disk Drives and Other PC Peripherals SMBus compatible serial interface, allowing up to eight Entertainment Systems devices to be controlled in a single serial bus. These fea- Office Equipment tures make the MCP9800/1/2/3 ideal for sophisticated Data Communication Equipment multi-zone temperature-monitoring applications. Mobile Phones Package Types General-purpose Temperature Monitoring MCP9800 MCP9801 Typical Application MCP9802 MCP9803 V SOT-23-5 SOIC, MSOP DD PICmicro V V SDA SDA 1 8 DD 1 5 DD Microcontroller SCLK A0 GND 2 2 7 MCP9800/02 R PIC16F737 ALERT SCLK 3 A1 3 4 6 ALERT V DD 1 5 A2 GND 4 5 SDA 2 GND SCLK MCP9800/02A0: A2, A1, A0 are internally set to (0, 0, 0) ALERT 3 4 I/O Port MCP9800/02A5: A2, A1, A0 are internally set to (1, 0, 1) R PULL-UP MCP9802/03: Serial Bus time-out 35 ms (typ.) 2004 Microchip Technology Inc. DS21909B-page 1MCP9800/1/2/3 1.0 ELECTRICAL PIN FUNCTION TABLE CHARACTERISTICS NAME FUNCTION SDA Bidirectional Serial Data (open-drain Absolute Maximum Ratings output) V ....................................................................... 6.0V SCLK Serial Clock Input DD ALERT Temperature Alert Output (open-drain) Voltage at all Input/Output pins .... GND 0.3V to 5.5V A2 Address Select Pin (bit 2) Storage temperature ..........................-65C to +150C A1 Address Select Pin (bit 1) Ambient temp. with power applied .....-55C to +125C A0 Address Select Pin (bit 0) Junction Temperature (T ).................................. 150C J V Power Supply Input DD ESD protection on all pins (HBM:MM)....... (4 kV:400V) GND Ground Latch-Up Current at each pin ........................ 200 mA Notice: Stresses above those listed under Maximum ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. DC CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, V = 2.7V to 5.5V, GND = Ground, and DD T = -55C to +125C. A Parameters Sym Min Typ Max Unit Conditions Power Supply Operating Voltage Range V 2.7 5.5 V DD Operating Current I 200 400 A Continuous Operation DD Shutdown Current I 0.1 1 A Shutdown Mode SHDN Power On Reset Threshold (POR) V 1.7 V V falling edge POR DD Temperature Sensor Accuracy Accuracy with 12-bit Resolution: T = +25C T 0.5 C V = 3.3V A ACY DD -10C < T +85C T -1.0 +1.0 C V = 3.3V A ACY DD -10C < T +125C T -2.0 +2.0 C V = 3.3V A ACY DD -55C < T +125C T -3.0 +3.0 C V = 3.3V A ACY DD Internal ADC Conversion Time: 9-bit Resolution t 30 75 ms 33 samples/sec (typ.) CONV 10-bit Resolution t 60 150 ms 17 samples/sec (typ.) CONV 11-bit Resolution t 120 300 ms 8 samples/sec (typ.) CONV 12-bit Resolution t 240 600 ms 4 samples/sec (typ.) CONV Alert Output (Open-drain) High-level Current I 1 AV = 5V OH OH Low-level Voltage V 0.4 V I = 3 mA OL OL Thermal Response Response Time t 1.4 s Time to 63% (88C) RES 27C (Air) to 125C (oil bath) DS21909B-page 2 2004 Microchip Technology Inc.