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Revision 1.34

8 - 15

AS1105

Data Sheet - D e t a i l e d D e s c r i p t i o n

Note: In the above table, the decimal point (DP) is set by bit D7 = 1

Table 6. Shutdown Register Format (address (hex) = 0xXC)

Mode

Address Code

(Hex)

Register Data

D7

D6

D5

D4

D3

D2

D1

D0

Shutdown Mode

0xXC

X

X

X

X

X

X

X

0

Normal Operation

0xXC

X

X

X

X

X

X

X

1

Table 7. Decode-mode Register Examples (address (hex) = 0xX9)

Decode Mode

Register Data

Hex Code

D7

D6

D5

D4

D3

D2

D1

D0

No decode for digits 4–0

0

0

0

0

0

0

0

0

0x00

Code B decode for digit 0

No decode for digits 4–1

0

0

0

0

0

0

0

1

0x01

Code B decode for digits 3–0

0

0

0

0

1

1

1

1

0x0F

Code B decode for digits 4–0

1

1

1

1

1

1

1

1

0xFF

Table 8. Code B font

7-Segment

Character

Register Data

On Segments = 1

D7

D6-D4

D3

D2

D1

D0

DP

A

B

C

D

E

F

G

0X

0

0

0

0

1

1

1

1

1

1

0

1X

0

0

0

1

0

1

1

0

0

0

0

2X

0

0

1

0

1

1

0

1

1

0

1

3X

0

0

1

1

1

1

1

1

0

0

1

4X

0

1

0

0

0

1

1

0

0

1

1

5X

0

1

0

1

1

0

1

1

0

1

1

6X

0

1

1

0

1

0

1

1

1

1

1

7X

0

1

1

1

1

1

1

0

0

0

0

8X

1

0

0

0

1

1

1

1

1

1

1

9X

1

0

0

1

1

1

1

1

0

1

1

--

X

1

0

1

0

0

0

0

0

0

0

1

EX

1

0

1

1

1

0

0

1

1

1

1

HX

1

1

0

0

0

1

1

0

1

1

1

LX

1

1

0

1

0

0

0

1

1

1

0

PX

1

1

1

0

1

1

0

0

1

1

1

blank

X

1

1

1

1

0

0

0

0

0

0

0

Table 9. No-decode mode data bits and corresponding segment lines

Register Data

D7

D6

D5

D4

D3

D2

D1

D0

Corresponding Segment Line

DP

A

B

C

D

E

F

G