LM3S9B81 Datasheet, PDF (1004/1155 Pages) Texas Instruments – Stellaris® LM3S9B81 Microcontroller

Analog Comparators
Table 21-1. Signals for Analog Comparators (100LQFP) (continued)
Pin Name
Pin Number Pin Mux / Pin Pin Type Buffer Type^a Description
Assignment
C0-
92
PB4
I
Analog Analog comparator 0 negative input.
C0o
24
PC5 (3)
O
TTL
Analog comparator 0 output.
42
PF4 (2)
90
PB6 (3)
91
PB5 (1)
100
PD7 (2)
C1+
24
PC5
I
Analog Analog comparator 1 positive input.
C1-
91
PB5
I
Analog Analog comparator 1 negative input.
C1o
2
PE6 (2)
O
TTL
Analog comparator 1 output.
22
PC7 (7)
24
PC5 (2)
41
PF5 (2)
84
PH2 (2)
C2+
23
PC6
I
Analog Analog comparator 2 positive input.
C2-
22
PC7
I
Analog Analog comparator 2 negative input.
C2o
1
PE7 (2)
O
TTL
Analog comparator 2 output.
23
PC6 (3)
a. The TTL designation indicates the pin has TTL-compatible voltage levels.
Table 21-2. Signals for Analog Comparators (108BGA)
Pin Name
Pin Number Pin Mux / Pin Pin Type Buffer Type^a Description
Assignment
C0+
A7
PB6
I
Analog Analog comparator 0 positive input.
C0-
A6
PB4
I
Analog Analog comparator 0 negative input.
C0o
M1
PC5 (3)
O
TTL
Analog comparator 0 output.
K4
PF4 (2)
A7
PB6 (3)
B7
PB5 (1)
A2
PD7 (2)
C1+
M1
PC5
I
Analog Analog comparator 1 positive input.
C1-
B7
PB5
I
Analog Analog comparator 1 negative input.
C1o
A1
PE6 (2)
O
TTL
Analog comparator 1 output.
L2
PC7 (7)
M1
PC5 (2)
K3
PF5 (2)
D11
PH2 (2)
C2+
M2
PC6
I
Analog Analog comparator 2 positive input.
C2-
L2
PC7
I
Analog Analog comparator 2 negative input.
C2o
B1
PE7 (2)
O
TTL
Analog comparator 2 output.
M2
PC6 (3)
a. The TTL designation indicates the pin has TTL-compatible voltage levels.
21.3
Functional Description
The comparator compares the VIN- and VIN+ inputs to produce an output, VOUT.
VIN- < VIN+, VOUT = 1
VIN- > VIN+, VOUT = 0
1004
Texas Instruments-Advance Information
June 29, 2010