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AS1106, AS1107

Datasheet - Detailed Descr i pti on

8.5.3 Display-Test Register (0xXF)

The AS1106/AS1107 devices 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 (AS1106) or 31/32 (AS1107). The devices remain 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.

5

X

0101

10110

11

6

X

0110

10111

11

7

X

0111

11100

00

8

X

1000

11111

11

9

X

1001

11110

11

-

X

1010

00000

01

E

X

1011

10011

11

H

X

1100

01101

11

L

X

1101

00011

10

P

X

1110

11001

11

Blank

X

1111

00000

00

†

The decimal point is enabled by setting bit D7 = 1.

Table 11. 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

0000

1

1

1

1110

1

X

0001

0

1

1

0000

2

X

0010

1

1

0

1101

3

X

0011

1

1

1

1001

4

X

0100

0

1

1

0011

5

X

0101

1

0

1

1011

6

X

0110

1

0

1

1111

7

X

0111

1

1

1

0000

8

X

1000

1

1

1

1111

9

X

1001

1

1

1

1011

A

X

1010

1

1

1

0111

b

X

1011

0

0

1

1111

C

X

1100

1

0

0

1110

d

X

1101

0

1

1

1101

E

X

1110

1

0

0

1111

F

X

1111

1

0

0

0111

†

The decimal point is enabled by setting bit D7 = 1.

Table 12. 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

Table 13. Display-Test Register Format (Address (HEX) = 0xXF))

Mode

Register Data

D7

D6

D5

D4

D3

D2

D1

D0

Normal Operation

XXXXXXX

0

Display Test Mode

XXXXXXX

1

Table 10. 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