LM3S8730 Datasheet, PDF (505/551 Pages) List of Unclassifed Manufacturers – Microcontroller

Stellaris® LM3S8730 Microcontroller
Table 18-8. GPIO Pins and Alternate Functions (continued)
IO
Pin Number
Multiplexed Function
PC3
A10
TDO
PD0
G1
CAN0Rx
PD1
G2
CAN0Tx
PD2
H2
U1Rx
PD3
H1
U1Tx
PE0
A11
PE1
B12
PF0
M9
PF1
H12
PF2
J11
LED1
PF3
J12
LED0
PG0
K1
PG1
K2
Multiplexed Function
SWO
18.3
Connections for Unused Signals
Table 18-9 on page 505 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
Ethernet
Signal Name
ERBIAS
GPIO
Hibernate
No Connects
MDIO
RXIN
RXIP
TXON
TXOP
XTALNPHY
XTALPPHY
All unused GPIOs
HIB
VBAT
WAKE
XOSC0
XOSC1
NC
Pin Number
41
58
37
40
46
43
17
16
-
51
55
50
52
53
-
Acceptable Practice
Connect to GND through
12.4-kΩ resistor.
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Preferred Practice
Connect to GND through 12.4-kΩ
resistor.
NC
GND
GND
GND
GND
NC
GND
GND
NC
GND
GND
GND
NC
NC
June 22, 2010
505
Texas Instruments-Production Data