LM3S5D56 Datasheet, PDF (1069/1146 Pages) Texas Instruments – Stellaris® LM3S5D56 Microcontroller

Stellaris^® LM3S5D56 Microcontroller
Table 22-6. Possible Pin Assignments for Alternate Functions (continued)
# of Possible Assignments
two
three
four
five
six
seven
Alternate Function
C1o
I2C1SCL
I2C1SDA
PWM0
PWM1
PWM2
PWM3
U2Rx
U2Tx
C0o
Fault0
PWM4
PWM5
PhA0
PhB0
USB0EPEN
CAN0Rx
CAN0Tx
CCP4
CCP5
CCP6
CCP7
IDX0
USB0PFLT
CCP0
CCP1
CCP3
U1Rx
U1Tx
CCP2
GPIO Function
PC5 PC7
PA0 PA6
PA1 PA7
PA6 PD0
PA7 PD1
PB0 PD2
PB1 PD3
PB4 PD0
PD1 PE4
PB5 PB6 PC5
PB3 PE1 PE4
PA2 PA6 PE0
PA3 PA7 PE1
PC4 PD1 PE2
PC6 PC7 PE3
PA6 PB2 PC5
PA4 PA6 PB4 PD0
PA5 PA7 PB5 PD1
PA7 PC4 PC7 PE2
PB5 PB6 PC4 PD2
PB5 PD0 PD2 PE1
PB6 PD1 PD3 PE3
PB2 PB4 PB6 PD0
PA7 PB3 PC6 PC7 PE0
PB0 PB2 PB5 PC6 PC7 PD3
PA6 PB1 PB6 PC4 PC5 PE3
PA7 PB2 PC5 PC6 PE0 PE4
PA0 PB0 PB4 PC6 PD0 PD2
PA1 PB1 PB5 PC7 PD1 PD3
PB1 PB5 PC4 PD1 PE1 PE2 PE4
22.1
Connections for Unused Signals
Table 22-7 on page 1069 shows how to handle signals for functions that are not used in a particular
system implementation for devices that are in a 64-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.
Table 22-7. Connections for Unused Signals (64-Pin LQFP)
Function
GPIO
Signal Name
All unused GPIOs
Pin Number
-
Acceptable Practice
NC
Preferred Practice
GND
January 23, 2012
Texas Instruments-Production Data
1069