LM3S5D56 Datasheet, PDF (1060/1146 Pages) Texas Instruments – Stellaris® LM3S5D56 Microcontroller

Signal Tables
Table 22-3. Signals by Signal Name (continued)
Pin Name
Pin Number Pin Mux / Pin Pin Type Buffer Type^a Description
Assignment
VREFA
56
PB6
I
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 4095. The VREFA
input is limited to the range specified in Table
24-23 on page 1084 .
WAKE
32
fixed
I
TTL
An external input that brings the processor out of
Hibernate mode when asserted.
XOSC0
34
fixed
I
Analog Hibernation module oscillator crystal input or an
external clock reference input. Note that this is
either a 4.194304-MHz crystal or a 32.768-kHz
oscillator for the Hibernation module RTC. See the
CLKSEL bit in the HIBCTL register.
XOSC1
35
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 22-4. Signals by Function, Except for GPIO
Function
ADC
Pin Name
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
VREFA
Pin Number
1
2
5
6
64
63
62
61
56
Pin Type
I
I
I
I
I
I
I
I
I
C0+
C0-
C0o
Analog Comparators
C1+
C1-
C1o
56
I
58
I
14
O
56
57
16
I
57
I
14
O
16
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 4095. The VREFA
input is limited to the range specified in Table
24-23 on page 1084 .
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.
1060
Texas Instruments-Production Data
January 23, 2012