Datasheet

– Direction change
– Quadrature error detection
1.3.11 Analog
The TM4C129XNCZAD microcontroller provides analog functions integrated into the device, including:
■ Two 12-bit Analog-to-Digital Converters (ADC), with a total of 24 analog input channels and each
with a sample rate of one million samples/second
■ Three analog comparators
■ On-chip voltage regulator
The following provides more detail on these analog functions.
1.3.11.1 ADC (see page 1200)
An analog-to-digital converter (ADC) is a peripheral that converts a continuous analog voltage to a
discrete digital number. The TM4C129XNCZAD ADC module features 12-bit conversion resolution
and supports 24 input channels plus an internal temperature sensor. Four buffered sample
sequencers allow rapid sampling of up to 24 analog input sources without controller intervention.
Each sample sequencer provides flexible programming with fully configurable input source, trigger
events, interrupt generation, and sequencer priority. Each ADC module has a digital comparator
function that allows the conversion value to be diverted to a comparison unit that provides eight
digital comparators.
The TM4C129XNCZAD microcontroller provides two ADC modules, each with the following features:
■ 24 shared analog input channels
■ 12-bit precision ADC
■ Single-ended and differential-input configurations
■ On-chip internal temperature sensor
■ Maximum sample rate of one million samples/second
■ Optional, programmable phase delay
■ Sample and hold window programmability
■ Four programmable sample conversion sequencers from one to eight entries long, with
corresponding conversion result FIFOs
■ Flexible trigger control
– Controller (software)
– Timers
– Analog Comparators
– PWM
85December 13, 2013
Texas Instruments-Advance Information
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TM4C129XNCZAD Microcontroller