LM3S2637 Datasheet, PDF (625/678 Pages) Texas Instruments – Stellaris® LM3S2637 Microcontroller

Stellaris^® LM3S2637 Microcontroller
Table 18-8. GPIO Pins and Alternate Functions (continued)
IO
Pin Number
Multiplexed Function
PC5
M1
C1+
PC6
M2
C2+
PC7
L2
C2-
PD0
G1
CAN0Rx
PD1
G2
CAN0Tx
PD2
H2
U1Rx
PD3
H1
U1Tx
PD4
E1
CCP3
PD5
E2
PD6
F2
PD7
F1
C0o
PE0
A11
PE1
B12
PE2
B11
PE3
A12
PF0
M9
PF1
H12
PF2
J11
PF3
J12
PF4
L9
PF5
L8
C1o
PG0
K1
PG1
K2
PG2
J1
PG3
J2
Multiplexed Function
18.3
Connections for Unused Signals
Table 18-9 on page 625 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 18-9. 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
June 18, 2012
625
Texas Instruments-Production Data