The EMC1212 is a temperature sensor that communicates with a host over a single-wire Microchip BudgetBus? Sensor Interface. The EMC1212 monitors one internal diode and one remote temperature zone. Packaged in a SOT23-5, the EMC1212 provides an accurate, low-cost, low-current, solution for critical temperature monitoring in applications such as embedded systems or computers. When used in combination with an Microchip Super I/O host, such as a keyboard controller, a complete thermal management system is created. A power down mode extends battery life in portable applications. The internal 11-bit sigma delta temperature-to-digital converter provides superb linearity, high accuracy and excellent noise immunity.

The EMC1212 is designed to operate with 65nm or 90nm PNP substrate transistor used as a thermal diode with the collector connected to ground.

Note: The EMC1212 is not recommended for new designs. The EMC1412 is the suggested replacement device for this product.

Features

  Single Wire BBUS Interface

  Resistance Error Correction

  Beta Compensation

  External Temperature Monitor

  0.125°C resolution

  ±1°C Accuracy 60°C to 100°C

  Diode Fault Reporting

  Internal Temperature Monitor

  Range 0°C to +85°C

  0.125°C resolution

  ±1.5°C Accuracy 50°C to 70°C

  Supply:

  3.0V to 3.6V

  <5uA in Standby

Applications

  Desktop and Notebook Computers

  Hardware Management