GENERAL DESCRIPTION
The EMC1212 is a temperature sensor that communicates with a host over a single-wire SMSC 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 SMSC 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.

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