LM3S1621 Datasheet, PDF (872/947 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Signal Tables
Table 19-8. Signals by Signal Name (continued)
Pin Name
Pin Number Pin Mux / Pin Pin Type Buffer Type^a Description
Assignment
XOSC1
K12
fixed
O
Analog Hibernation module oscillator crystal output. Leave
unconnected when using a single-ended clock
source.
a. The TTL designation indicates the pin has TTL-compatible voltage levels.
Table 19-9. Signals by Function, Except for GPIO
Function
ADC
Pin Name
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
VREFA
Pin Number
B1
A1
B3
B2
A2
A3
C6
B5
A7
Pin Type
I
I
I
I
I
I
I
I
I
C0+
C0-
C0o
Analog Comparators
C1+
C1-
C1o
A7
I
A6
I
M1
O
L9
A7
B7
A2
M1
I
B7
I
A1
O
L2
M1
L8
D11
Buffer Type^a
Description
Analog Analog-to-digital converter input 0.
Analog Analog-to-digital converter input 1.
Analog Analog-to-digital converter input 2.
Analog Analog-to-digital converter input 3.
Analog Analog-to-digital converter input 4.
Analog Analog-to-digital converter input 5.
Analog Analog-to-digital converter input 6.
Analog Analog-to-digital converter input 7.
Analog
This input provides a reference voltage used to
specify the input voltage at which the ADC converts
to a maximum value. In other words, the voltage
that is applied to VREFA is the voltage with which
an AINn signal is converted to 1023. The VREFA
input is limited to the range specified in Table
21-26 on page 903 .
Analog Analog comparator 0 positive input.
Analog Analog comparator 0 negative input.
TTL
Analog comparator 0 output.
Analog
Analog
TTL
Analog comparator 1 positive input.
Analog comparator 1 negative input.
Analog comparator 1 output.
872
January 21, 2012
Texas Instruments-Production Data