LM3S1Z16 Datasheet, PDF (743/794 Pages) Texas Instruments – Stellaris® LM3S1Z16 Microcontroller

Stellaris^® LM3S1Z16 Microcontroller
Table 18-6. Possible Pin Assignments for Alternate Functions (continued)
# of Possible Assignments
six
seven
Alternate Function
CCP0
CCP1
CCP3
U1Rx
U1Tx
CCP2
GPIO Function
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
18.1
Connections for Unused Signals
Table 18-7 on page 743 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 18-7. Connections for Unused Signals (64-Pin LQFP)
Function
GPIO
Hibernate
No Connects
System Control
Signal Name
All unused GPIOs
HIB
VBAT
WAKE
XOSC0
XOSC1
NC
OSC0
OSC1
RST
Pin Number
-
33
37
32
34
35
-
30
31
40
Acceptable Practice
Preferred Practice
NC
GND
NC
NC
NC
GND
NC
GND
NC
GND
NC
NC
NC
NC
NC
GND
NC
NC
Pull up as shown in Figure Connect through a capacitor to
5-1 on page 176
GND as close to pin as possible
January 21, 2012
743
Texas Instruments-Production Data