LM3S101 Datasheet, PDF (402/445 Pages) List of Unclassifed Manufacturers – Microcontroller

Signal Tables
Table 14-7. Signals by Function, Except for GPIO (continued)
Function
Pin Name Pin Number Pin Type Buffer Type^a
Description
SSIClk
19
I/O
TTL
SSI clock.
SSIFss
20
I/O
TTL
SSI frame.
SSI
SSIRx
21
I
TTL
SSI receive.
SSITx
22
O
TTL
SSI transmit.
System Control &
Clocks
OSC0
OSC1
9
I
Analog Main oscillator crystal input or an external clock
reference input.
10
O
Analog Main oscillator crystal output. Leave unconnected
when using a single-ended clock source.
RST
5
I
TTL
System reset input.
UART
U0Rx
U0Tx
17
I
TTL
UART module 0 receive.
18
O
TTL
UART module 0 transmit.
a. The TTL designation indicates the pin has TTL-compatible voltage levels.
14.2.4 GPIO Pins and Alternate Functions
Table 14-8. GPIO Pins and Alternate Functions
IO
Pin Number
PA0
17
PA1
18
PA2
19
PA3
20
PA4
21
PA5
22
PB0
29
PB1
30
PB2
33
PB3
34
PB4
44
PB5
43
PB6
42
PB7
41
PC0
40
PC1
39
PC2
38
PC3
37
Multiplexed Function
U0Rx
U0Tx
SSIClk
SSIFss
SSIRx
SSITx
CCP0
32KHz
C0-
C1-
C0+
TRST
TCK
TMS
TDI
TDO
Multiplexed Function
C0o
SWCLK
SWDIO
SWO
14.3
Connections for Unused Signals
Table 14-9 on page 403 show how to handle signals for functions that are not used in a particular
system implementation. Two options are shown in the table: an acceptable practice and a preferred
practice for reduced power consumption and improved EMC characteristics.
402
July 14, 2014
Texas Instruments-Production Data