LM3S308 Luminary Micro, Inc, LM3S308 Datasheet - Page 379

• Manufacturer Part Number: LM3S308
• Description: Lm3s308 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

17
June 04, 2008
Signal Tables
The following tables list the signals available for each pin. Functionality is enabled by software with
the GPIOAFSEL register.
Important:
Table 17-1 on page 379 shows the pin-to-signal-name mapping, including functional characteristics
of the signals. Table 17-2 on page 381 lists the signals in alphabetical order by signal name.
Table 17-3 on page 383 groups the signals by functionality, except for GPIOs. Table 17-4 on page
384 lists the GPIO pins and their alternate functionality.
Table 17-1. Signals by Pin Number
Pin Number
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
All multiplexed pins are GPIOs by default, with the exception of the five JTAG pins (PB7
and PC[3:0]) which default to the JTAG functionality.
Pin Name
SSIClk
SSIFss
ADC0
ADC1
ADC2
ADC3
OSC0
OSC1
CCP4
CCP3
CCP1
U0Rx
U0Tx
RST
LDO
VDD
GND
PC7
PC6
PC5
PC4
VDD
GND
PA0
PA1
PA2
PA3
Preliminary
Pin Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
-
-
-
-
-
I
I
I
I
I
I
I
Buffer Type
Analog
Analog
Analog
Analog
Analog
Analog
Power
Power
Power
Power
Power
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
Description
Analog-to-digital converter input 0.
Analog-to-digital converter input 1.
Analog-to-digital converter input 2.
Analog-to-digital converter input 3.
System reset input.
Low drop-out regulator output voltage. This
pin requires an external capacitor between
the pin and GND of 1 µF or greater.
Positive supply for I/O and some logic.
Ground reference for logic and I/O pins.
Main oscillator crystal input or an external
clock reference input.
Main oscillator crystal output.
GPIO port C bit 7
Capture/Compare/PWM 4
GPIO port C bit 6
Capture/Compare/PWM 3
GPIO port C bit 5
Capture/Compare/PWM 1
GPIO port C bit 4
Positive supply for I/O and some logic.
Ground reference for logic and I/O pins.
GPIO port A bit 0
UART module 0 receive
GPIO port A bit 1
UART module 0 transmit
GPIO port A bit 2
SSI clock
GPIO port A bit 3
SSI frame
LM3S308 Microcontroller
379