Datasheet

Figure 11-1. ADC Module Block Diagram
Analog-to-Digital
Converter
ADCSSFSTAT0
ADCSSCTL0
ADCSSMUX0
Sample
Sequencer 0
ADCSSFSTAT1
ADCSSCTL1
ADCSSMUX1
Sample
Sequencer 1
ADCSSFSTAT2
ADCSSCTL2
ADCSSMUX2
Sample
Sequencer 2
ADCSSFSTAT3
ADCSSCTL3
ADCSSMUX3
Sample
Sequencer 3
ADCUSTAT
ADCOSTAT
ADCACTSS
Control/Status
ADCSSPRI
ADCISC
ADCRIS
ADCIM
Interrupt Control
Analog Inputs
SS0 Interrupt
SS1 Interrupt
SS2 Interrupt
SS3 Interrupt
ADCEMUX
ADCPSSI
Trigger Events
SS0
SS1
SS2
SS3
Comparator
GPIO (PB4)
Timer
PWM
Comparator
GPIO (PB4)
Timer
PWM
Comparator
GPIO (PB4)
Timer
PWM
Comparator
GPIO (PB4)
Timer
PWM
ADCSSFIFO0
ADCSSFIFO1
ADCSSFIFO2
ADCSSFIFO3
FIFO Block
Hardware Averager
ADCSAC
11.2 Signal Description
Table 11-1 on page 398 and Table 11-2 on page 398 list the external signals of the ADC module and
describe the function of each. The signals are analog functions for some GPIO signals. The column
in the table below titled "Pin Assignment" lists the GPIO pin placement for the ADC signals. The
AINx analog signals are not 5-V tolerant and go through an isolation circuit before reaching their
circuitry. These signals are configured by clearing the corresponding DEN bit in the GPIO Digital
Enable (GPIODEN) register and setting the corresponding AMSEL bit in the GPIO Analog Mode
Select (GPIOAMSEL) register. For more information on configuring GPIOs, see “General-Purpose
Input/Outputs (GPIOs)” on page 289.
Table 11-1. ADC Signals (100LQFP)
DescriptionBuffer Type
a
Pin TypePin NumberPin Name
Analog-to-digital converter input 0.AnalogI1ADC0
Analog-to-digital converter input 1.AnalogI2ADC1
Analog-to-digital converter input 2.AnalogI5ADC2
Analog-to-digital converter input 3.AnalogI6ADC3
a. The TTL designation indicates the pin has TTL-compatible voltage levels.
Table 11-2. ADC Signals (108BGA)
DescriptionBuffer Type
a
Pin TypePin NumberPin Name
Analog-to-digital converter input 0.AnalogIB1ADC0
Analog-to-digital converter input 1.AnalogIA1ADC1
Analog-to-digital converter input 2.AnalogIB3ADC2
June 18, 2012398
Texas Instruments-Production Data
Analog-to-Digital Converter (ADC)
NRND: Not recommended for new designs.