Rainbow Electronics MAX1494 User Manual
Page 25
MAX1492/MAX1494
3.5- and 4.5-Digit, Single-Chip ADCs
with LCD Drivers
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25
Default values: 0000h
The LCD segment-display register 2 is a 16-bit
read/write register. When the SEG-SEL bit (in the con-
trol register) is set to 1, the MAX1492/MAX1494 provide
direct access to individual LCD segments. The bits in
the LCD segment-display register determine if a seg-
ment is on or off. Write a 0 to this register to turn on a
segment and a 1 to turn off a segment.
DP1:
Segment DP Driver Bit of Digit 1. The
default value turns on the LCD segment.
E1:
Segment e Driver Bit of Digit 1. The
default value turns on the LCD segment.
F1:
Segment f Driver Bit of Digit 1. The
default value turns on the LCD segment.
D1:
Segment d Driver Bit of Digit 1. The
default value turns on the LCD segment.
G1:
Segment g Driver Bit of Digit 1. The
default value turns on the LCD segment.
A1:
Segment a Driver Bit of Digit 1. The
default value turns on the LCD segment.
C1:
Segment c Driver Bit of Digit 1. The
default value turns on the LCD segment.
B1:
Segment b Driver Bit of Digit 1. The
default value turns on the LCD segment.
ANN:
Custom Annunciator. The default value
turns on the LCD segment.
DP2:
Segment DP Driver Bit of Digit 2. The
default value turns on the LCD segment.
E2:
Segment e Driver Bit of Digit 2. The
default value turns on the LCD segment.
F2:
Segment f Driver Bit of Digit 2. The
default value turns on the LCD segment.
D2:
Segment d Driver Bit of Digit 2. The
default value turns on the LCD segment.
G2:
Segment g Driver Bit of Digit 2. The
default value turns on the LCD segment.
A2:
Segment a Driver Bit of Digit 2. The
default value turns on the LCD segment.
MSB
LSB
F4
E4
DP4
MINUS
B3
C3
A3
G3
D3
F3
E3
DP3
LOW
BATT
B2
C2
0
C2:
Segment c Driver Bit of Digit 2. The
default value turns on the LCD segment.
B2:
Segment b Driver Bit of Digit 2. The
default value turns on the LCD segment.
LOWBATT: LOWBATT Driver Bit. The default value
turns on the LOWBATT annunciator.
DP3:
Segment DP Driver Bit of Digit 3. The
default value turns on the LCD segment.
E3:
Segment e Driver Bit of Digit 3. The
default value turns on the LCD segment.
F3:
Segment f Driver Bit of Digit 3. The
default value turns on the LCD segment.
D3:
Segment d Driver Bit of Digit 3. The
default value turns on the LCD segment.
G3:
Segment g Driver Bit of Digit 3. The
default value turns on the LCD segment.
A3:
Segment a Driver Bit of Digit 3. The
default value turns on the LCD segment.
C3:
Segment c Driver Bit of Digit 3. The
default value turns on the LCD segment.
B3:
Segment b Driver Bit of Digit 3. The
default value turns on the LCD segment.
MINUS:
Minus-Sign Driver Bit. The default value
turns on the LCD segment.
DP4:
Segment DP Driver Bit of Digit 4. The
default value turns on the LCD segment
(MAX1494 only).
E4:
Segment e Driver Bit of Digit 4. The
default value turns on the LCD segment
(MAX1494 only).
F4:
Segment f Driver Bit of Digit 4. The
default value turns on the LCD segment
(MAX1494 only).
LCD Segment-Display Register 2 (Read/Write):