LM3S1637 Datasheet, PDF (621/696 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Stellaris^® LM3S1637 Microcontroller
Table 19-1. Signals by Pin Number (continued)
Pin Number
Pin Name
Pin Type Buffer Type^a Description
PB5
I/O
TTL
GPIO port B bit 5.
91
CCP5
I/O
TTL
Capture/Compare/PWM 5.
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.
95
PD4
I/O
TTL
GPIO port D bit 4.
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 645, 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.
19.1.2 Signals by Signal Name
Table 19-2. Signals by Signal Name
Pin Name
ADC0
ADC1
ADC2
ADC3
C0+
C0-
C0o
CCP0
CCP1
CCP2
CCP3
CCP4
CCP5
CMOD0
Pin Number
1
2
5
6
90
92
24
66
34
67
23
35
91
65
Pin Type
I
I
I
I
I
I
O
I/O
I/O
I/O
I/O
I/O
I/O
I
CMOD1
76
I
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-to-digital converter input 3.
Analog Analog comparator 0 positive input.
Analog Analog comparator 0 negative input.
TTL
Analog comparator 0 output.
TTL
Capture/Compare/PWM 0.
TTL
Capture/Compare/PWM 1.
TTL
Capture/Compare/PWM 2.
TTL
Capture/Compare/PWM 3.
TTL
Capture/Compare/PWM 4.
TTL
Capture/Compare/PWM 5.
TTL
CPU Mode bit 0. Input must be set to logic 0 (grounded); other
encodings reserved.
TTL
CPU Mode bit 1. Input must be set to logic 0 (grounded); other
encodings reserved.
June 18, 2012
621
Texas Instruments-Production Data