LM3S300-IQN25-C2 Datasheet, PDF (450/498 Pages) Texas Instruments – Stellaris LM3S300 Microcontroller

Signal Tables
NRND: Not recommended for new designs.
15 Signal Tables
15.1
Important: 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.
The following tables list the signals available for each pin. Functionality is enabled by software with
the GPIOAFSEL register. All digital inputs are Schmitt triggered.
■ Signals by Pin Number
■ Signals by Signal Name
■ Signals by Function, Except for GPIO
■ GPIO Pins and Alternate Functions
■ Connections for Unused Signals
Signals by Pin Number
Table 15-1. Signals by Pin Number
Pin Number
1
2
3
4
5
6
Pin Name
PE5
CCP5
PE4
CCP3
PE3
CCP1
PE2
CCP4
RST
LDO
Pin Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
-
7
VDD
-
8
GND
-
9
OSC0
I
10
OSC1
O
PC7
I/O
11
C2-
I
PC6
I/O
12
C2+
I
C2o
O
PC5
I/O
13
C1+
I
C1o
O
14
PC4
I/O
15
VDD
-
16
GND
-
Buffer Type^a Description
TTL
GPIO port E bit 5.
TTL
Capture/Compare/PWM 5.
TTL
GPIO port E bit 4.
TTL
Capture/Compare/PWM 3.
TTL
GPIO port E bit 3.
TTL
Capture/Compare/PWM 1.
TTL
GPIO port E bit 2.
TTL
Capture/Compare/PWM 4.
TTL
System reset input.
Power
Low drop-out regulator output voltage. This pin requires an external
capacitor between the pin and GND of 1 µF or greater.
Power Positive supply for I/O and some logic.
Power Ground reference for logic and I/O pins.
Analog Main oscillator crystal input or an external clock reference input.
Analog
Main oscillator crystal output. Leave unconnected when using a
single-ended clock source.
TTL
GPIO port C bit 7.
Analog Analog comparator 2 negative input.
TTL
GPIO port C bit 6.
Analog Analog comparator 2 positive input.
TTL
Analog comparator 2 output.
TTL
GPIO port C bit 5.
Analog Analog comparator 1 positive input.
TTL
Analog comparator 1 output.
TTL
GPIO port C bit 4.
Power Positive supply for I/O and some logic.
Power Ground reference for logic and I/O pins.
450
June 18, 2012
Texas Instruments-Production Data