LM3S3749 Datasheet, PDF (818/898 Pages) Texas Instruments – Stellaris® LM3S3749 Microcontroller

Signal Tables
Table 21-2. Signals by Signal Name (continued)
Pin Name
Pin Number Pin Type Buffer Type^a Description
VDD
8
-
Power Positive supply for I/O and some logic.
20
32
44
56
68
81
93
VDD25
14
-
Power Positive supply for most of the logic function, including the
38
processor core and most peripherals.
62
88
VDDA
3
-
Power The positive supply (3.3 V) for the analog circuits (ADC,
Analog Comparators, etc.). These are separated from VDD
to minimize the electrical noise contained on VDD from
affecting the analog functions. VDDA pins must be connected
to 3.3 V, regardless of system implementation.
WAKE
50
I
TTL
An external input that brings the processor out of Hibernate
mode when asserted.
XOSC0
52
I
Analog Hibernation module oscillator crystal input or an external clock
reference input. Note that this is either a crystal or a
32.768-kHz oscillator for the Hibernation module RTC.
XOSC1
53
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 21-3. Signals by Function, Except for GPIO
Function
Pin Name
ADC0
ADC1
ADC2
ADC
ADC3
ADC4
ADC5
ADC6
ADC7
C0+
C0-
C0o
Analog Comparators
C1+
C1-
C1o
Pin Number
1
2
5
6
100
99
98
97
90
92
58
24
91
22
Pin Type
I
I
I
I
I
I
I
I
I
I
O
I
I
O
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 Analog comparator 0 positive input.
Analog Analog comparator 0 negative input.
TTL
Analog comparator 0 output.
Analog Analog comparator 1 positive input.
Analog Analog comparator 1 negative input.
TTL
Analog comparator 1 output.
818
November 17, 2011
Texas Instruments-Production Data