MAX1497 Datasheet, PDF (22/33 Pages) Maxim Integrated Products – 3.5- and 4.5-Digit, Single-Chip ADCs with LED Drivers and μC Interface

3.5- and 4.5-Digit, Single-Chip ADCs with LED
Drivers and µC Interface
LED Segment-Display Register 2 (Read/Write)
MSB
Bit 15
F3
Bit 14
E3
Bit 13
DP4
Bit 1
MINUS
Bit 7
D2
Bit 6
F2
Bit 5
E2
Bit 4
DP3
Default values: 0000h
LED segment-display register 2 is a 16-bit read/write
register. When the SEG_SEL bit (in the control register)
is set to 1, the MAX1497/MAX1499 provide direct
access to individual LED segments. The bits in the LED
segment-display register determine if a segment is on
or off. Write a zero to turn on a segment and a 1 to turn
off a segment.
C1: Segment C driver bit of digit 1. The default value
turns on the LED segment.
B1: Segment B driver bit of digit 1. The default value
turns on the LED segment.
MINUS: Segment minus driver bit. The default value
turns on the LED minus segment. Setting this bit to 1
enables the plus sign on the LED display.
DP3: Segment DP driver bit of digit 3. The default value
turns on the LED segment.
E2: Segment E driver bit of digit 2. The default value
turns on the LED segment.
Bit 11
B2
Bit 3
X
Bit 10
C2
Bit 2
B1
Bit 9
A2
Bit 1
C1
Bit 8
G2
LSB
Bit 0
0
F2: Segment F driver bit of digit 2. The default value
turns on the LED segment.
D2: Segment D driver bit of digit 2. The default value
turns on the LED segment.
G2: Segment G driver bit of digit 2. The default value
turns on the LED segment.
A2: Segment A driver bit of digit 2. The default value
turns on the LED segment.
C2: Segment C driver bit of digit 2. The default value
turns on the LED segment.
B2: Segment B driver bit of digit 2. The default value
turns on the LED segment.
DP4: Segment DP driver bit of digit 4. The default value
turns on the LED segment (MAX1499 only).
E3: Segment E driver bit of digit 3. The default value
turns on the LED segment (MAX1499 only).
F3: Segment F driver bit of digit 3. The default value
turns on the LED segment (MAX1499 only).
LED Segment-Display Register 3 (Read/Write)
MSB
X
X
BC_
B3
Default values: 00h
LED segment-display register 3 is an 8-bit read/write
register. When the SEG_SEL bit (in the control register)
is set to 1, the MAX1497/MAX1499 provide direct
access to individual LED segments. The bits in the LED
segment-display register determine if a segment is on
or off. Write a zero to turn on a segment and a 1 to turn
off a segment.
D3: Segment D driver bit of digit 3. The default value
turns on the LED segment (MAX1499 only).
G3: Segment G driver bit of digit 3. The default value
turns on the LED segment (MAX1499 only).
LSB
C3
A3
G3
D3
A3: Segment A driver bit of digit 3. The default value
turns on the LED segment (MAX1499 only).
C3: Segment C driver bit of digit 3. The default value
turns on the LED segment (MAX1499 only).
B3: Segment B driver bit of digit 3. The default value
turns on the LED segment (MAX1499 only).
BC_: Segment B and C driver bit of digit 3 (3.5 digits)
or Digit 4 (4.5 digits). The default value turns on the
LED segment.
X: Don’t care.
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