LM3S1637 Datasheet, PDF (635/696 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Stellaris^® LM3S1637 Microcontroller
Table 19-6. Signals by Signal Name (continued)
Pin Name
I2C0SDA
Pin Number
C12
Pin Type
I/O
Buffer Type^a Description
OD
I²C module 0 data.
IDX0
F1
I
TTL
QEI module 0 index.
LDO
E3
-
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 VDD25
pins at the board level in addition to the decoupling
capacitor(s).
NC
A2
-
-
No connect. Leave the pin electrically unconnected/isolated.
A3
A4
A12
B4
B11
C1
C2
C10
D1
D2
D10
D11
J2
K3
K4
L7
L8
L9
M7
M8
OSC0
L11
I
Analog Main oscillator crystal input or an external clock reference
input.
OSC1
M11
O
Analog Main oscillator crystal output. Leave unconnected when using
a single-ended clock source.
PA0
L3
I/O
TTL
GPIO port A bit 0.
PA1
M3
I/O
TTL
GPIO port A bit 1.
PA2
M4
I/O
TTL
GPIO port A bit 2.
PA3
L4
I/O
TTL
GPIO port A bit 3.
PA4
L5
I/O
TTL
GPIO port A bit 4.
PA5
M5
I/O
TTL
GPIO port A bit 5.
PA6
L6
I/O
TTL
GPIO port A bit 6.
PA7
M6
I/O
TTL
GPIO port A bit 7.
PB0
E12
I/O
TTL
GPIO port B bit 0.
PB1
D12
I/O
TTL
GPIO port B bit 1.
PB2
C11
I/O
TTL
GPIO port B bit 2.
PB3
C12
I/O
TTL
GPIO port B bit 3.
PB4
A6
I/O
TTL
GPIO port B bit 4.
PB5
B7
I/O
TTL
GPIO port B bit 5.
PB6
A7
I/O
TTL
GPIO port B bit 6.
PB7
A8
I/O
TTL
GPIO port B bit 7.
PC0
A9
I/O
TTL
GPIO port C bit 0.
June 18, 2012
635
Texas Instruments-Production Data