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AS1108 Datasheet PDF : 19 Pages
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AS1108
Data Sheet
austriamicrosystems
Digit- and Control-Registers
Table 9. Code-B Font (Continued)
7-Segment
Character
Register Data
On Segments = 1
D7 † D6:D4 D3 D2 D1 D0 DP † A B C D E F G
6
X
0110
1011111
7
X
0111
1110000
8
X
1000
1111111
9
X
1001
1111011
-
X
1010
0000001
E
X
1011
1001111
H
X
1100
0110111
L
X
1101
0001110
P
X
1110
1100111
Blank
X
1111
0000000
† The decimal point is enabled by setting bit D7 = 1.
Table 10. HEX Font
7-Segment
Character
Register Data
On Segments = 1
D7 † D6:D4 D3 D2 D1 D0 DP † A B C D E F G
0
X
0
0
0
0
1111110
1
X
0
0
0
1
0110000
2
X
0
0
1
0
1101101
3
X
0
0
1
1
1111001
4
X
0
1
0
0
0110011
5
X
0
1
0
1
1011011
6
X
0
1
1
0
1011111
7
X
0
1
1
1
1110000
8
X
1
0
0
0
1111111
9
X
1
0
0
1
1111011
A
X
1
0
1
0
1110111
b
X
1
0
1
1
0011111
C
X
1
1
0
0
1001110
d
X
1
1
0
1
0111101
E
X
1
1
1
0
1001111
F
X
1
1
1
1
1000111
† The decimal point is enabled by setting bit D7 = 1.
Table 11. No-Decode Mode Data Bits and Corresponding Segment Lines
D7
D6
D5
D4
D3
D2
D1
D0
Corresponding Segment Line
DP
A
B
C
D
E
F
G
Display-Test Register (0xXF)
The AS1108 can operate in two modes: normal mode and display test mode. In display test mode all LEDs are
switched on at maximum brightness (duty cycle is 15/16). The device remains in display-test mode until the Display-
Test Register is set for normal operation.
Note: All settings of the Digit- and Control-Registers are maintained.
Table 12. Display-Test Register Format (Address (HEX) = 0xXF))
Mode
Normal Operation
Display Test Mode
Register Data
D7
D6
D5
D4
D3
D2
D1
D0
X
X
X
X
X
X
X
0
X
X
X
X
X
X
X
1
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