Datasheet

1.3.11 Analog
The TM4C129ENCPDT microcontroller provides analog functions integrated into the device, including:
Two 12-bit Analog-to-Digital Converters (ADC), with a total of 20 analog input channels and each
with a sample rate of two 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 1177)
An analog-to-digital converter (ADC) is a peripheral that converts a continuous analog voltage to a
discrete digital number. The TM4C129ENCPDT ADC module features 12-bit conversion resolution
and supports 20 input channels plus an internal temperature sensor. Four buffered sample
sequencers allow rapid sampling of up to 20 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 TM4C129ENCPDT microcontroller provides two ADC modules, each with the following features:
20 shared analog input channels
12-bit precision ADC
Single-ended and differential-input configurations
On-chip internal temperature sensor
Maximum sample rate of two 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
GPIO
Hardware averaging of up to 64 samples
June 18, 201482
Texas Instruments-Production Data
Architectural Overview