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ADC-Slide9

On this slide is an operation example showing how the AD converter can be used with a hardware trigger - in this example, channel one of the Timer Array Unit. Sometimes this operation is called an “event link”. Here the falling edge triggers the Timer Array Unit and starts the timer counting until the interval ends. If the timer reaches the interval time, an interrupt is generated which triggers the AD converter. The AD converter takes a sample and starts the conversion. When the conversion is complete, the AD converter generates an interrupt and the AD result can be read. This entire flow can be done without any CPU usage - working completely in the background with no time delay from the falling edge of the timer to the AD converter.

PTM Published on: 2012-04-11