Datasheet

Table 18-1. ADC Signals (212BGA) (continued)
DescriptionBuffer TypePin TypePin Mux / Pin
Assignment
Pin NumberPin Name
Analog-to-digital converter input 8.AnalogIPE5B5AIN8
Analog-to-digital converter input 9.AnalogIPE4A5AIN9
Analog-to-digital converter input 10.AnalogIPB4C6AIN10
Analog-to-digital converter input 11.AnalogIPB5B6AIN11
Analog-to-digital converter input 12.AnalogIPD3D1AIN12
Analog-to-digital converter input 13.AnalogIPD2D2AIN13
Analog-to-digital converter input 14.AnalogIPD1C1AIN14
Analog-to-digital converter input 15.AnalogIPD0C2AIN15
Analog-to-digital converter input 16.AnalogIPK0J1AIN16
Analog-to-digital converter input 17.AnalogIPK1J2AIN17
Analog-to-digital converter input 18.AnalogIPK2K1AIN18
Analog-to-digital converter input 19.AnalogIPK3K2AIN19
Analog-to-digital converter input 20.AnalogIPE6A7AIN20
Analog-to-digital converter input 21.AnalogIPE7B7AIN21
Analog-to-digital converter input 22.AnalogIPP7A8AIN22
Analog-to-digital converter input 23.AnalogIPP6B8AIN23
A reference voltage used to specify the voltage at
which the ADC converts to a maximum value. This
pin is used in conjunction with VREFA-, which
specifies the minimum value . The voltage that is
applied to VREFA+ is the voltage with which an
AINn signal is converted to 4095. The VREFA+
voltage is limited to the range specified in Table
32-44 on page 2136.
Analog-fixedF4VREFA+
A reference voltage used to specify the input
voltage at which the ADC converts to a minimum
value. This pin is used in conjunction with VREFA+,
which specifies the maximum value. In other words,
the voltage that is applied to VREFA- is the voltage
with which an AINn signal is converted to 0, while
the voltage that is applied to VREFA+ is the voltage
with which an AINn signal is converted to 4095.
The VREFA- voltage is limited to the range specified
in Table 32-44 on page 2136.
Analog-fixedG5VREFA-
18.3 Functional Description
The TM4C129XNCZAD ADC collects sample data by using a programmable sequence-based
approach instead of the traditional single or double-sampling approaches found on many ADC
modules. Each sample sequence is a fully programmed series of consecutive (back-to-back) samples,
allowing the ADC to collect data from multiple input sources without having to be re-configured or
serviced by the processor. The programming of each sample in the sample sequence includes
parameters such as the input source and mode (differential versus single-ended input), interrupt
generation on sample completion, and the indicator for the last sample in the sequence. In addition,
the μDMA can be used to more efficiently move data from the sample sequencers without CPU
intervention.
1203December 13, 2013
Texas Instruments-Advance Information
Tiva
™
TM4C129XNCZAD Microcontroller