LM3S1165_16 Datasheet, PDF (389/679 Pages) Texas Instruments – Stellaris LM3S1165 Microcontroller

Stellaris^® LM3S1165 Microcontroller
Figure 11-1. ADC Module Block Diagram
Trigger Events
Comparator
GPIO (PB4)
Timer
SS3
PWM
Comparator
GPIO (PB4)
Timer
SS2
PWM
Comparator
GPIO (PB4)
Timer
SS1
PWM
Comparator
GPIO (PB4)
Timer
SS0
PWM
SS0 Interrupt
SS1 Interrupt
SS2 Interrupt
SS3 Interrupt
ADCEMUX
ADCPSSI
Control/Status
ADCACTSS
ADCOSTAT
ADCUSTAT
ADCSSPRI
Interrupt Control
ADCIM
ADCRIS
ADCISC
Sample
Sequencer 0
ADCSSMUX0
ADCSSCTL0
ADCSSFSTAT0
Sample
Sequencer 1
ADCSSMUX1
ADCSSCTL1
ADCSSFSTAT1
Sample
Sequencer 2
ADCSSMUX2
ADCSSCTL2
ADCSSFSTAT2
Sample
Sequencer 3
ADCSSMUX3
ADCSSCTL3
ADCSSFSTAT3
Analog-to-Digital
Converter
Hardware Averager
ADCSAC
FIFO Block
ADCSSFIFO0
ADCSSFIFO1
ADCSSFIFO2
ADCSSFIFO3
Analog Inputs
11.2
Signal Description
Table 11-1 on page 389 and Table 11-2 on page 389 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. For more information on configuring GPIOs, see “General-Purpose
Input/Outputs (GPIOs)” on page 280.
Table 11-1. ADC Signals (100LQFP)
Pin Name
Pin Number Pin Type Buffer Type^a Description
ADC0
1
I
Analog Analog-to-digital converter input 0.
ADC1
2
I
Analog Analog-to-digital converter input 1.
ADC2
5
I
Analog Analog-to-digital converter input 2.
ADC3
6
I
Analog Analog-to-digital converter input 3.
a. The TTL designation indicates the pin has TTL-compatible voltage levels.
Table 11-2. ADC Signals (108BGA)
Pin Name
Pin Number Pin Type Buffer Type^a Description
ADC0
B1
I
Analog Analog-to-digital converter input 0.
ADC1
A1
I
Analog Analog-to-digital converter input 1.
ADC2
B3
I
Analog Analog-to-digital converter input 2.
ADC3
B2
I
Analog Analog-to-digital converter input 3.
a. The TTL designation indicates the pin has TTL-compatible voltage levels.
July 15, 2014
389
Texas Instruments-Production Data