LM3S1621 Datasheet, PDF (841/947 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Stellaris^® LM3S1621 Microcontroller
Table 19-3. Signals by Signal Name (continued)
Pin Name
I2C0SCL
I2C0SDA
I2C1SCL
I2C1SDA
LDO
Pin Number Pin Mux / Pin
Assignment
72
PB2 (1)
65
PB3 (1)
14
PJ0 (11)
19
PG0 (3)
26
PA0 (8)
34
PA6 (1)
18
PG1 (3)
27
PA1 (8)
35
PA7 (1)
87
PJ1 (11)
7
fixed
Pin Type
I/O
I/O
I/O
I/O
-
NC
NMI
OSC0
OSC1
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PC0
PC1
PC2
PC3
PC4
PC5
70
fixed
-
71
73
89
PB7 (4)
I
48
fixed
I
49
fixed
O
26
-
I/O
27
-
I/O
28
-
I/O
29
-
I/O
30
-
I/O
31
-
I/O
34
-
I/O
35
-
I/O
66
-
I/O
67
-
I/O
72
-
I/O
65
-
I/O
92
-
I/O
91
-
I/O
90
-
I/O
89
-
I/O
80
-
I/O
79
-
I/O
78
-
I/O
77
-
I/O
25
-
I/O
24
-
I/O
Buffer Type^a Description
OD
I²C module 0 clock.
OD
I²C module 0 data.
OD
I²C module 1 clock.
OD
I²C module 1 data.
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).
No connect. Leave the pin electrically
unconnected/isolated.
TTL
Analog
Analog
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
Non-maskable interrupt.
Main oscillator crystal input or an external clock
reference input.
Main oscillator crystal output. Leave unconnected
when using a single-ended clock source.
GPIO port A bit 0.
GPIO port A bit 1.
GPIO port A bit 2.
GPIO port A bit 3.
GPIO port A bit 4.
GPIO port A bit 5.
GPIO port A bit 6.
GPIO port A bit 7.
GPIO port B bit 0. This pin is not 5-V tolerant.
GPIO port B bit 1. This pin is not 5-V tolerant.
GPIO port B bit 2.
GPIO port B bit 3.
GPIO port B bit 4.
GPIO port B bit 5.
GPIO port B bit 6.
GPIO port B bit 7.
GPIO port C bit 0.
GPIO port C bit 1.
GPIO port C bit 2.
GPIO port C bit 3.
GPIO port C bit 4.
GPIO port C bit 5.
January 21, 2012
841
Texas Instruments-Production Data