LM3S613 Datasheet, PDF (231/591 Pages) List of Unclassifed Manufacturers – Microcontroller

7.1 Block Diagram
Figure 7-1. GPIO Module Block Diagram
PA0
U0Rx
UART0
PA1
U0Tx
PA2
SSIClk
PA3
SSIFss
SSI
PA4
SSIRx
PA5
SSITx
PB0
PWM2
PWM1
PB1
PWM3
PB2
I2CSCL
I²C
PB3
I2CSDA
PB4
C0-
Analog
PB5
Comparator C0o
PB6
C0+
PB7
JTAG
Stellaris^® LM3S613 Microcontroller
PE0
PE1
CCP2
CCP3
Timer1
CCP4
CCP5
Timer2
PWM0
PD0
Fault
PWM0 _PWM1
PD1
U1Rx
PD2
UART1
U1Tx
PD3
CCP1 Timer0
CCP0
PD4
PD5
PD6
PD7
GPIO Port C
7.2 Signal Description
GPIO signals have alternate hardware functions. Table 7-3 on page 233 lists the GPIO pins and their
analog and digital alternate functions. 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. Other analog signals are
5-V tolerant and are connected directly to their circuitry (C0-, C0+). These signals are configured
by clearing the DEN bit in the GPIO Digital Enable (GPIODEN) register. The digital alternate hardware
functions are enabled by setting the appropriate bit in the GPIO Alternate Function Select
(GPIOAFSEL) and GPIODEN registers and configuring the PMCx bit field in the GPIO Port Control
(GPIOPCTL) register to the numeric enoding shown in the table below. Note that each pin must be
programmed individually; no type of grouping is implied by the columns in the table.
July 14, 2014
231
Texas Instruments-Production Data