AS1117
Datasheet - D e t a i l e d D e s c r i p t i o n
When no-decode mode is selected, data bits D7:D0 of the Digit-Registers correspond to the segment lines of the
AS1117. Table 12 on page 15 shows the 1:1 pairing of each data bit to the appropriate segment line.
Table 9. Decode Enable Register Format Examples
Decode Mode
No decode for digits 7:0
Code-B/HEX decode for digit 0. No decode for digits 7:1
Code-B/HEX decode for digit 0:2. No decode for digits 7:3
Code-B/HEX decode for digits 0:5. No decode for digits 7:6
HEX Code
0x00
0x01
0x07
0x3F
D7
0
0
0
0
D6
0
0
0
0
Register Data
D5 D4 D3 D2
0 0 0 0
0 0 0 0
0 0 0 1
1 1 1 1
D1
0
0
1
1
D0
0
1
1
1
Code-B/HEX decode for digits 0,2,5.
No decode for digits 1, 3, 4, 6, 7
0x25
0
0
1
0
0
1
0
1
Figure 25. Standard 7-Segment LED Intensity Control and Inter-Digit Blanking
A
F
G
B
Table 10. Code-B Font
E
D
C
DP
Char-
Register Data
Char-
Register Data
Char-
Register Data
acter D7 D6:D4 D3 D2 D1 D0 acter D7 D6: D4 D3 D2 D1 D0 acter D7 D6:D4 D3 D2 D1 D0
X
X
X
X
0
0
0
0
0
0
0
0
0
0
1
1
0
1
0
1
X
X
X
X
0
0
1
1
1
1
0
0
1
1
0
0
0
1
0
1
X
X
X
X
1
1
1
1
1
1
1
1
0
0
1
1
0
1
0
1
X
0
1
0
0
X
1
0
1
0
*
1
X
X
X
X
X
X
0
1
0
1
X
1
0
1
1
*
The decimal point can be enabled with every character by setting bit D7 = 1.
Table 11. HEX Font
Char-
Register Data
Char-
Register Data
Char-
Register Data
acter D7 D6:D4 D3 D2 D1 D0 acter D7 D6: D4 D3 D2 D1 D0 acter D7 D6:D4 D3 D2 D1 D0
X
X
X
0
0
0
0
0
0
0
0
1
0
1
0
X
X
X
0
0
1
1
1
0
1
1
0
0
1
0
X
X
X
1
1
1
1
1
1
0
0
1
0
1
0
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Revision 1.00
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