Table 21-11. Possible Pin Assignments for Alternate Functions (continued)
GPIO FunctionAlternate Function# of Possible Assignments
TDO PC3
PC1TMS
PA0U0Rx
PA1U0Tx
PF0U1DSR
PB6VREFA
PD1 PE2PhB1
two
PE6 PC7 PC5C1o
three
PG0 PA0 PA6I2C1SCL
PG1 PA1 PA7I2C1SDA
PD2 PF2 PB0PWM2
PD3 PF3 PB1PWM3
PD1 PC4 PE2PhA0
PC5 PB6 PB5 PD7C0o
four
PD0 PD2 PE1 PB5CCP6
PD1 PD3 PE3 PB6CCP7
PE4 PB3 PE1 PD6Fault0
PD0 PG0 PA6 PF0PWM0
PD1 PG1 PA7 PF1PWM1
PC7 PC6 PF0 PE3PhB0
PD0 PG0 PB4 PD5U2Rx
PE4 PD1 PG1 PD6U2Tx
PC7 PC4 PA7 PE2 PD5CCP4
five
PE5 PD2 PC4 PB6 PB5CCP5
PD0 PB2 PB6 PB4 PD7IDX0
PE6 PG0 PA2 PA6 PF2 PE0PWM4
six
PE7 PG1 PA3 PA7 PF3 PE1PWM5
PD0 PD2 PC6 PA0 PB0 PB4U1Rx
PD1 PD3 PC7 PA1 PB1 PB5U1Tx
PD3 PC7 PC6 PB0 PB2 PB5 PD4CCP0
seven
PC5 PC4 PA6 PB1 PE3 PB6 PD7CCP1
PE4 PD1 PC4 PB1 PE1 PE2 PB5 PD5CCP2
eight
PE4 PC6 PC5 PA7 PF1 PB2 PE0 PD4CCP3
21.3 Connections for Unused Signals
Table 21-12 on page 978 shows how to handle signals for functions that are not used in a particular
system implementation for devices that are in a 100-pin LQFP package. Two options are shown in
the table: an acceptable practice and a preferred practice for reduced power consumption and
improved EMC characteristics. If a module is not used in a system, and its inputs are grounded, it
is important that the clock to the module is never enabled by setting the corresponding bit in the
RCGCx register.
977July 24, 2012
Texas Instruments-Production Data
Stellaris
®
LM3S6G65 Microcontroller
OBSOLETE: TI has discontinued production of this device.