LM3S1439_16 Datasheet, PDF (623/699 Pages) Texas Instruments – Stellaris LM3S1439 Microcontroller

Stellaris^® LM3S1439 Microcontroller
Table 19-2. Signals by Signal Name (continued)
Pin Name
Pin Number Pin Type Buffer Type^a Description
VDDA
3
-
Power The positive supply for the analog circuits (ADC, Analog
98
Comparators, etc.). These are separated from VDD to
minimize the electrical noise contained on VDD from affecting
the analog functions. VDDA pins must be supplied with a
voltage that meets the specification in “Recommended DC
Operating Conditions” on page 644, 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.
19.1.3 Signals by Function, Except for GPIO
Table 19-3. Signals by Function, Except for GPIO
Function
Pin Name
ADC0
ADC
ADC1
ADC2
ADC3
C0+
Analog Comparators C0-
C0o
CCP0
CCP1
General-Purpose
Timers
CCP2
CCP3
CCP4
CCP5
HIB
Pin Number
1
2
5
6
90
92
24
66
34
67
23
35
91
51
Pin Type
I
I
I
I
I
I
O
I/O
I/O
I/O
I/O
I/O
I/O
O
VBAT
55
-
Hibernate
WAKE
XOSC0
50
I
52
I
XOSC1
53
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 comparator 0 positive input.
Analog Analog comparator 0 negative input.
TTL
Analog comparator 0 output.
TTL
Capture/Compare/PWM 0.
TTL
Capture/Compare/PWM 1.
TTL
Capture/Compare/PWM 2.
TTL
Capture/Compare/PWM 3.
TTL
Capture/Compare/PWM 4.
TTL
Capture/Compare/PWM 5.
OD
An open-drain output with internal pull-up that
indicates the processor is in Hibernate mode.
Power
Power source for the Hibernation module. It is
normally connected to the positive terminal of a
battery and serves as the battery
backup/Hibernation module power-source supply.
TTL
An external input that brings the processor out of
Hibernate mode when asserted.
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.
Analog
Hibernation module oscillator crystal output. Leave
unconnected when using a single-ended clock
source.
July 15, 2014
623
Texas Instruments-Production Data