AS1108WL austriamicrosystems, AS1108WL Datasheet - Page 10

• Manufacturer Part Number: AS1108WL
• Description: IC LED 4-DIGIT DRIVER 20-SOIC
• Manufacturer: austriamicrosystems

Specifications of AS1108WL

• Display Type: LED
• Configuration: 7 Segment + DP
• Interface: Serial
• Digits Or Characters: 4 Digits
• Current - Supply: 330mA
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (0.300", 7.50mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 11. HEX Font
AS1108
Datasheet - D e t a i l e d D e s c r i p t i o n
Table 10. Code-B Font (Continued)
Table 12. No-Decode Mode Data Bits and Corresponding Segment Lines
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 13. Display-Test Register Format (Address (HEX) = 0xXF))
www.austriamicrosystems.com/LED-Driver-ICs/AS1108
†
†
The decimal point is enabled by setting bit D7 = 1.
Corresponding Segment Line
The decimal point is enabled by setting bit D7 = 1.
7-Segment
7-Segment
Character
Character
Blank
A
C
E
0
1
2
3
4
5
6
7
8
9
b
d
F
E
H
P
6
7
8
9
L
-
Display Test Mode
Normal Operation
Mode
D7
D7
†
†
D6:D4
D6:D4
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
DP
D7
Register Data
Register Data
D3
D3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
1
1
1
1
1
1
1
1
D6
D2
D2
D7
A
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
X
X
D1
Revision 2.12
1
1
0
0
1
1
0
0
1
1
D1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
D6
X
X
D5
B
D0
0
1
0
1
0
1
0
1
0
1
D0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
D5
DP
X
X
DP
D4
C
†
†
Register Data
A
1
1
1
1
0
1
0
0
1
0
D4
X
X
A
1
0
1
1
0
1
1
1
1
1
1
0
1
0
1
1
D3
D
B
0
1
1
1
0
0
1
0
1
0
B
1
1
1
1
1
0
0
1
1
1
1
0
0
1
0
0
D3
X
X
On Segments = 1
On Segments = 1
C
1
1
1
1
0
0
1
0
0
0
C
1
1
0
1
1
1
1
1
1
1
1
1
0
1
0
0
D2
E
D2
D
1
0
1
1
0
1
0
1
0
0
X
X
D
1
0
1
1
0
1
1
0
1
1
0
1
1
1
1
0
D1
E
1
0
1
0
0
1
1
1
1
0
F
E
1
0
1
0
0
0
1
0
1
0
1
1
1
1
1
1
D1
X
X
F
1
0
1
1
0
1
1
1
1
0
F
1
0
0
0
1
1
1
0
1
1
1
1
1
0
1
1
D0
G
D0
10 - 19
0
1
G
1
0
1
1
1
1
1
0
1
0
G
0
0
1
1
1
1
1
0
1
1
1
1
0
1
1
1