LM3S3749 Luminary Micro, Inc, LM3S3749 Datasheet - Page 675

• Manufacturer Part Number: LM3S3749
• Description: Lm3s3749 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

22
June 02, 2008
Signal Tables
The following tables list the signals available for each pin. Functionality is enabled by software with
the GPIOAFSEL register.
Important:
Table 22-1 on page 675 shows the pin-to-signal-name mapping, including functional characteristics
of the signals. Table 22-2 on page 679 lists the signals in alphabetical order by signal name.
Table 22-3 on page 684 groups the signals by functionality, except for GPIOs. Table 22-4 on page
687 lists the GPIO pins and their alternate functionality.
Table 22-1. Signals by Pin Number
Pin Number
10
11
12
13
1
2
3
4
5
6
7
8
9
All multiplexed pins are GPIOs by default, with the exception of the four JTAG pins
(PC[3:0]) which default to the JTAG functionality.
Pin Name
ADC0
ADC1
VDDA
GNDA
ADC2
ADC3
U2Rx
U2Tx
CCP6
CCP0
PE7
PE6
PE5
PE4
LDO
VDD
GND
PD0
PD1
PD2
PD3
Preliminary
Pin Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
-
-
-
-
-
I
I
I
I
I
Buffer Type
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Power
Power
Power
Power
Power
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
Description
GPIO port E bit 7
ADC 0 input
GPIO port E bit 6
ADC 1 input
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.
The ground reference for the analog circuits
(ADC, Analog Comparators, etc.). These are
separated from GND to minimize the electrical
noise contained on VDD from affecting the
analog functions.
GPIO port E bit 5
ADC 2 input
GPIO port E bit 4
ADC 3 input
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 VDD25 pins
at the board level in addition to the decoupling
capacitor(s).
Positive supply for I/O and some logic.
Ground reference for logic and I/O pins.
GPIO port D bit 0
UART 2 receive
GPIO port D bit 1
UART 2 transmit
GPIO port D bit 2
Capture/Compare/PWM 6
GPIO port D bit 3
Capture/Compare/PWM 0
LM3S3749 Microcontroller
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