LM3S6C11 Datasheet, PDF (748/828 Pages) Texas Instruments – Stellaris® LM3S6C11 Microcontroller

Signal Tables
OBSOLETE: TI has discontinued production of this device.
Table 18-4. Signals by Function, Except for GPIO (continued)
Function
Pin Name Pin Number Pin Type Buffer Type^a
Description
GND
9
-
Power Ground reference for logic and I/O pins.
15
21
33
39
42
45
54
57
63
69
82
85
86
87
94
GNDA
4
-
Power The ground reference for the analog circuits (
97
Analog Comparators, etc.). These are separated
from GND to minimize the electrical noise contained
on VDD from affecting the analog functions.
LDO
Power
7
-
Power Low drop-out regulator output voltage. This pin
requires an external capacitor between the pin and
GND of 1 µF or greater. The LDO pin must also be
connected to the VDDC pins at the board level in
addition to the decoupling capacitor(s).
VDD
8
-
Power Positive supply for I/O and some logic.
20
32
36
44
56
68
81
83
84
93
VDDA
3
-
Power The positive supply for the analog circuits (ADC,
98
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 20-2 on page 775 , regardless
of system implementation.
VDDC
14
-
Power Positive supply for most of the logic function,
38
including the processor core and most peripherals.
62
The voltage on this pin is 1.3 V and is supplied by
88
the on-chip LDO. The VDDC pins should only be
connected to the LDO pin and an external capacitor
as specified in Table 20-6 on page 780 .
748
July 24, 2012
Texas Instruments-Production Data