Sensors may be internal or external to the multichip module 501, depending on the practicality of implementing it in chips or on the same PWB. [0051] The sensor interface(s) 506 provides an interface between the various internal and/or external sensors, and circuitry such as digital-to-analog converters (DACs) 526, analog-to-digital converters (ADCs) 528, frequency counters 530, and the like.