LM3S8G62 Datasheet, PDF (990/1096 Pages) Texas Instruments – Stellaris® LM3S8G62 Microcontroller

Signal Tables
OBSOLETE: TI has discontinued production of this device.
Table 22-3. Signals by Signal Name (continued)
Pin Name
Pin Number Pin Mux / Pin Pin Type Buffer Type^a Description
Assignment
VDDA
3
fixed
98
-
Power The positive supply 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 supplied with a voltage that meets the
specification in Table 24-2 on page 1031 , regardless
of system implementation.
VDDC
14
fixed
38
62
88
-
Power Positive supply for most of the logic function,
including the processor core and most peripherals.
The voltage on this pin is 1.3 V and is supplied by
the on-chip LDO. The VDDC pins should only be
connected to the LDO pin and an external capacitor
as specified in Table 24-6 on page 1036 .
VREFA
90
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
24-22 on page 1043 .
WAKE
50
fixed
I
TTL
An external input that brings the processor out of
Hibernate mode when asserted.
XOSC0
52
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
53
fixed
O
Analog Hibernation module oscillator crystal output. Leave
unconnected when using a single-ended clock
source.
XTALNPHY
17
fixed
O
Analog Ethernet PHY XTALN 25-MHz oscillator crystal
output. Leave this pin unconnected when using a
single-ended 25-MHz clock input connected to the
XTALPPHY pin.
XTALPPHY
16
fixed
I
Analog Ethernet PHY XTALP 25-MHz oscillator crystal
input or external clock reference input.
a. The TTL designation indicates the pin has TTL-compatible voltage levels.
990
July 24, 2012
Texas Instruments-Production Data