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LM3S1969 Datasheet, PDF (542/677 Pages) Texas Instruments – Stellaris® LM3S1969 Microcontroller | |||
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OBSOLETE: TI has discontinued production of this device.
Analog Comparators
15 Analog Comparators
An analog comparator is a peripheral that compares two analog voltages, and provides a logical
output that signals the comparison result.
Note: Not all comparators have the option to drive an output pin.
The comparator can provide its output to a device pin, acting as a replacement for an analog
comparator on the board, or it can be used to signal the application via interrupts or triggers to the
ADC to cause it to start capturing a sample sequence. The interrupt generation and ADC triggering
logic is separate. This means, for example, that an interrupt can be generated on a rising edge and
the ADC triggered on a falling edge.
The Stellaris® Analog Comparators module has the following features:
â Three independent integrated analog comparators
â Configurable for output to drive an output pin, generate an interrupt, or initiate an ADC sample
sequence
â Compare external pin input to external pin input or to internal programmable voltage reference
â Compare a test voltage against any one of these voltages
â An individual external reference voltage
â A shared single external reference voltage
â A shared internal reference voltage
542
July 24, 2012
Texas Instruments-Production Data
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