LM3S818 Luminary Micro, Inc, LM3S818 Datasheet - Page 107

• Manufacturer Part Number: LM3S818
• Description: Lm3s818 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

8.1
Figure 8-1. GPIO Module Block Diagram
8.2
February 6, 2007
PA0
PA1
PA2
PA3
PA4
PA5
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
LM3S818
Block Diagram
Functional Description
Important:
Each GPIO port is a separate hardware instantiation of the same physical block (see Figure 8-2).
The LM3S818 microcontroller contains five ports and thus five of these physical GPIO blocks.
U0Rx
U0Tx
SSICLK
SSIFss
SSIRx
SSITx
PWM2
PWM3
C0-
C0o
C0+
All GPIO pins are inputs by default (GPIODIR=0 and GPIOAFSEL=0), with the
exception of the five JTAG pins (PB7 and PC[3:0]. The JTAG pins default to their
JTAG functionality (GPIOAFSEL=1). Asserting a Power-On-Reset (POR) or an
external reset (RST) puts both groups of pins back to their default state.
UART0
Comparators
SSI
Analog
PWM1
Fault
Preliminary
JTAG
SWD/SWO
TRST
PhA
IDX
GP Timer 2
Fault
UART1
CCP1
Fault
GP Timer 1
GP Timer 0
PWM0
PWM2
QEI
TCK/SWCLK
TMS/SWDIO
TDO/SWO
PWM0
PWM1
PWM4
PWM5
CCP4
CCP0
CCP2
U1Rx
U1Tx
LM3S818 Data Sheet
TDI
PhB
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PD0
PD1
PD2
PD3
PD4
PD5
PE0
PE1
107