LM3S2939 Datasheet, PDF (671/749 Pages) Texas Instruments – Stellaris® LM3S2939 Microcontroller

Stellaris^® LM3S2939 Microcontroller
Table 20-1. Signals by Pin Number (continued)
Pin Number
Pin Name
Pin Type Buffer Type^a Description
PB6
I/O
TTL
GPIO port B bit 6.
90
C0+
I
Analog Analog comparator 0 positive input.
PB5
I/O
TTL
GPIO port B bit 5.
91
C1-
I
Analog Analog comparator 1 negative input.
PB4
I/O
TTL
GPIO port B bit 4.
92
C0-
I
Analog Analog comparator 0 negative input.
93
VDD
-
Power Positive supply for I/O and some logic.
94
GND
-
Power Ground reference for logic and I/O pins.
PD4
I/O
TTL
GPIO port D bit 4.
95
CCP3
I/O
TTL
Capture/Compare/PWM 3.
96
PD5
I/O
TTL
GPIO port D bit 5.
GNDA
97
-
Power 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.
VDDA
98
-
Power The positive supply 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. VDDA pins must be supplied with a voltage that meets
the specification in “Recommended DC Operating
Conditions” on page 696, regardless of system implementation.
PD6
I/O
TTL
GPIO port D bit 6.
99
Fault
I
TTL
PWM Fault.
PD7
100
IDX0
I/O
TTL
GPIO port D bit 7.
I
TTL
QEI module 0 index.
a. The TTL designation indicates the pin has TTL-compatible voltage levels.
20.1.2 Signals by Signal Name
Table 20-2. Signals by Signal Name
Pin Name
ADC0
ADC1
ADC2
C0+
C0-
C0o
C1+
C1-
C1o
C2+
C2-
CAN0Rx
CAN0Tx
Pin Number
1
2
5
90
92
58
24
91
46
23
22
10
11
Pin Type
I
I
I
I
I
O
I
I
O
I
I
I
O
Buffer Type^a Description
Analog Analog-to-digital converter input 0.
Analog Analog-to-digital converter input 1.
Analog Analog-to-digital converter input 2.
Analog Analog comparator 0 positive input.
Analog Analog comparator 0 negative input.
TTL
Analog comparator 0 output.
Analog Analog comparator 1 positive input.
Analog Analog comparator 1 negative input.
TTL
Analog comparator 1 output.
Analog Analog comparator 2 positive input.
Analog Analog comparator 2 negative input.
TTL
CAN module 0 receive.
TTL
CAN module 0 transmit.
June 18, 2012
671
Texas Instruments-Production Data