Single-Wire Sensors that Simplify Design and Reduce Overhead
March 2006
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Designers of electronics systems face unrelenting pressure to shrink systems and curb costs without sacrificing performance.

"In addition, advanced manufacturing process technology can complicate system behavior in critical areas such as temperature," observes Mark Beadle, director of product marketing-Computing Platform Solutions at SMSC.

Bringing its systems-design expertise to bear, the company designed the EMC1200-series temperature sensors to communicate with SMSC's KBC11xx keyboard controller family over a single-wire SMSC BudgetBus sensor interface. The BudgetBus architecture leverages the host controller to reduce sensor overhead, resulting in smaller size and lower costs. The BudgetBus architecture also enables SMSC Sentinel Alert technology to provide a hardware response to critical thermal conditions, such as unresponsive system execution or excessive temperatures. In addition, the single-wire interface simplifies routing, making it easy to design-in.

The family includes the EMC1204 quad-temperature sensor (pictured), said to be the only quad sensor device in an 8-pin package, resulting in smaller size and requiring less routing. SMSC,

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