LM3S2276 Datasheet, PDF (718/785 Pages) Texas Instruments – Stellaris® LM3S2276 Microcontroller

Signal Tables
Table 19-4. GPIO Pins and Alternate Functions (continued)
IO
Pin Number
Multiplexed Function
PD1
62
PWM1
PD2
63
ADC5
PD3
64
ADC4
PE0
6
ADC3
PE1
5
ADC2
PE2
2
ADC1
PE3
1
ADC0
PE4
8
Fault0
Multiplexed Function
19.1
Connections for Unused Signals
Table 19-5 on page 718 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 19-5. 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 172
GND as close to pin as possible
718
November 17, 2011
Texas Instruments-Production Data