EMC1843T-2E/RW [Microchip]

The EMC1843 is a 1.8V, 3 channel, high accuracy, 2-Wire (I²C compatible) temperature sensor. Advanced features such as Rate of Change, Shutdown, Resistance Error Correction (REC), Beta Compensation (to support CPU diodes requiring the BJT/transistor model), and Ideality Configuration combine to provide a robust solution for complex environmental monitoring applications.

The EMC1843 monitors is the first device family  to introduce rate of change functionality.  This data, in addition to the temperature itself, facilitates a preemptive system  f. This type of data can help customer better regulate their applications to control temperature.

A resistor settable shutdown temperature protects against brownout.  Resistance Error Correction automatically eliminates the temperature error caused by series resistance allowing greater flexibility in routing thermal diodes. Beta Compensation eliminates temperature errors caused by low, variable beta transistors common in today's fine geometry processors. This frees the user from providing unique sensor configurations for each temperature monitoring application. These advanced features plus ±1° measurement accuracy provide a low-cost, highly flexible and accurate solution for critical temperature monitoring applications.

1.8V Logic Levels, Compatible with EIA/JEDEC8-7 Standard

Rate of Temperature Change Calculation with Preemptive Alert Limits (Patent-Pending) dT/dt Measurement Programmable Duration and Gain Limits on Rates with Alert
• dT/dt Measurement
• Programmable Duration and Gain
• Limits on Rates with Alert

2 External Temperature Monitors ±1°C Max Accuracy, 25°C to 125°C Ta, 0°C to 127°C Td ±2°C Max Accuracy, -40°C to 125°C Ta, -40°C to 127°C Td 0.125 Resolution Resistance Error Correction for 100Ω Automatic Beta Compensation with BJT/Transistor Model Support Ideality Factor Configuration Supports up to 2.2nF Diode Filter Capacitor Anti-parallel Diodes for Extra Diode Support
• ±1°C Max Accuracy, 25°C to 125°C Ta, 0°C to 127°C Td
• ±2°C Max Accuracy, -40°C to 125°C Ta, -40°C to 127°C Td
• 0.125 Resolution
• Resistance Error Correction for 100Ω
• Automatic Beta Compensation with BJT/Transistor Model Support
• Ideality Factor Configuration
• Supports up to 2.2nF Diode Filter Capacitor
• Anti-parallel Diodes for Extra Diode Support

Internal Temperature ±°1C Max Accuracy, -40°C to 125°C 0.125 Resolution
• ±°1C Max Accuracy, -40°C to 125°C
• 0.125 Resolution

2-Wire / I2C compatible interface Up to 400kHz Clock Rate Support Both Byte and Block Operation Contiguous Block for Read of All Temperatures Programmable or Fixed Address Options
• Up to 400kHz Clock Rate
• Support Both Byte and Block Operation
• Contiguous Block for Read of All Temperatures
• Programmable or Fixed Address Options
• Frequency Hopping Technology Eliminates Noise Sensitivity (Patented)
• ALERT (Bar) pin, Maskable SMBUs / I2C Compatible Interrupt Configurable as Comparator
• SMBUs / I2C Compatible Interrupt
• Configurable as Comparator

THERM pin, Non-Maskable (Bar), Acts as Interrupt or Comparator
• Acts as Interrupt or Comparator
• Programmable temperature limits for ALERT# and THERM#

Register Compatible with EMC141X, EMC142X, and EMC118X

Operating Voltage:1.62V to 3.6V

Temperature Range: -40°C to +125°C

Available in 8-Lead 2.0x2.0 mm WDFN

Applications
• Portable Electronics
• IOT for Low System Voltage
• Handheld Gaming
• Industrial
• Computing
• Temperature sensitive storage
• Embedded applications