AS1116 DB-RED austriamicrosystems, AS1116 DB-RED Datasheet - Page 13

• Manufacturer Part Number: AS1116 DB-RED
• Description: BOARD DEMO AS1116 RED
• Manufacturer: austriamicrosystems

Specifications of AS1116 DB-RED

• Current - Output / Channel: *
• Outputs And Type: 8, Non-Isolated
• Voltage - Output: *
• Features: 64 LED Driver with Error Detection, SPI
• Voltage - Input: 2.7 ~ 5.5 V
• Utilized Ic / Part: AS1116
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption

Table 16. Intensity Register Format
AS1116
Datasheet - D e t a i l e d D e s c r i p t i o n
Display brightness is controlled by an integrated pulse-width modulator which is controlled by the lower-nibble of the
Intensity Control Register. The modulator scales the average segment-current in 16 steps from a maximum of 15/16
down to 1/16 of the peak current set by R
Table 17. Intensity Register Address
Scan-Limit Register (0x0B)
The Scan-Limit Register controls which of the digits are to be displayed. When all 8 digits are to be displayed, the
update frequency is typically 0.8kHz. If the number of digits displayed is reduced, the update frequency is increased.
The frequency can be calculated using 8fOSC/N, where N is the number of digits. Since the number of displayed digits
influences the brightness, R
Note: To avoid differences in brightness this register should not be used to blank parts of the display (leading zeros).
Table 18. Scan-Limit Register Format (Address (HEX) = 0x0B))
www.austriamicrosystems.com/LED-Driver-ICs/AS1116
1/16 (min on)
Duty Cycle
Register HEX Address
2/16
3/16
4/16
5/16
6/16
7/16
8/16
Display digit 0 only
Display digits 0:1
Display digits 0:2
Display digits 0:3
Scan Limit
0x0A
0x10
0x11
0x12
0x13
HEX Code
0xX0
0xX1
0xX2
0xX3
0xX4
0xX5
0xX6
0xX7
SET
Code
0xX0
0xX1
0xX2
0xX3
HEX
MSB
should be adjusted accordingly.
0
0
0
0
0
0
0
0
D7:D3 D2
Register Data
Global
Type
Digit
Digit
Digit
Digit
X
X
X
X
D2
0
0
0
0
1
1
1
1
Register Data
SET
.
0
0
0
0
D1
0
0
1
1
0
0
1
1
D1
0
0
1
1
LSB
0
1
0
1
0
1
0
1
Revision 1.05
D0
0
1
0
1
15/16 (max on)
Digit 1 Intensity
Digit 3 Intensity
Digit 5 Intensity
Digit 7 Intensity
Duty Cycle
10/16
11/16
12/16
13/16
14/16
15/16
9/16
Display digits 0:4
Display digits 0:5
Display digits 0:6
Display digits 0:7
D7:D4
Scan Limit
X
HEX Code
Register Data
0xXC
0xXD
0xX8
0xX9
0xXA
0xXB
0xXE
0xXF
Code
0xX4
0xX5
0xX6
0xX7
HEX
MSB
1
1
1
1
1
1
1
1
Global Intensity
Digit 0 Intensity
Digit 2 Intensity
Digit 4 Intensity
Digit 6 Intensity
D7:D3 D2 D1 D0
Register Data
X
X
X
X
D3:D0
Register Data
D2
0
0
0
0
1
1
1
1
1
1
1
1
D1
0
0
1
1
0
0
1
1
0
0
1
1
13 - 20
LSB
0
1
0
1
0
1
0
1
0
1
0
1