LM3S1637 Datasheet, PDF (642/696 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Signal Tables
Table 19-8. GPIO Pins and Alternate Functions (continued)
IO
Pin Number
Multiplexed Function
PC2
B8
TDI
PC3
A10
TDO
PC4
L1
PhA0
PC5
M1
C0o
PC6
M2
CCP3
PC7
L2
PhB0
PD0
G1
PWM0
PD1
G2
PWM1
PD2
H2
U1Rx
PD3
H1
U1Tx
PD4
E1
PD5
E2
PD6
F2
Fault
PD7
F1
IDX0
PE0
A11
PWM4
PE1
B12
PWM5
PF0
M9
PF1
H12
PF2
J11
PF3
J12
PG0
K1
U2Rx
PG1
K2
U2Tx
PG2
J1
PH0
C9
PWM2
PH1
C8
PWM3
Multiplexed Function
SWO
19.3
Connections for Unused Signals
Table 19-9 on page 642 show 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.
Table 19-9. Connections for Unused Signals (100-pin LQFP)
Function
ADC
GPIO
Signal Name
ADC0
ADC1
ADC2
ADC3
All unused GPIOs
Pin Number
1
2
5
6
-
Acceptable Practice
NC
NC
Preferred Practice
GNDA
GND
642
June 18, 2012
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