kak111
Advanced Member level 4
144-LED Cross-Plexing Driver with 320mA Charge-Pump
AS1119 144channel LED driver
The AS1119 is a compact LED driver for 144 (90) single LEDs. The devices can be programmed via an I²C compatible interface.
The AS1119 offers two blocks driving each 72 LEDs (3 blocks each 30LEDs) with 1/9 (1/6) cycle rate. The required lines to drive
all 144 (90 )LEDs are reduced to 18 by using the cross-plexing feature optimizing space on the PCB.
Every block driving 72(30) LEDs can be analog dimmed from 1 to 30mA in 1mA steps.
Additionally each of the 144 (90) LEDs can be dimmed individually with 8-bit allowing 256 steps of linear dimming.
To reduce CPU usage up to 6 frames can be stored with individual time delays between frames to play small animations automatically.
1MHz I²C-Compatible Interface
Open and Shorted LED Error Detection
- Global Detection of Shorts
- Global Detections of Open
144 - LEDs in Dot Matrix
Low-Power Shutdown Current
Individual 8-bit LED PWM Control
8-bit Analog Brightness Control
(1:1), 2:3, 1:2 320mA Charge Pump
6 Frames Memory for Animations
Supply Voltage Range: 2.7V to 5.5V
Minimum PCB space required
36-pin WL-CSP package
Datasheet......................
http://www.austriamicrosystems.com/eng/content/download/48348/529899/32335
AS1119 144channel LED driver
The AS1119 is a compact LED driver for 144 (90) single LEDs. The devices can be programmed via an I²C compatible interface.
The AS1119 offers two blocks driving each 72 LEDs (3 blocks each 30LEDs) with 1/9 (1/6) cycle rate. The required lines to drive
all 144 (90 )LEDs are reduced to 18 by using the cross-plexing feature optimizing space on the PCB.
Every block driving 72(30) LEDs can be analog dimmed from 1 to 30mA in 1mA steps.
Additionally each of the 144 (90) LEDs can be dimmed individually with 8-bit allowing 256 steps of linear dimming.
To reduce CPU usage up to 6 frames can be stored with individual time delays between frames to play small animations automatically.
1MHz I²C-Compatible Interface
Open and Shorted LED Error Detection
- Global Detection of Shorts
- Global Detections of Open
144 - LEDs in Dot Matrix
Low-Power Shutdown Current
Individual 8-bit LED PWM Control
8-bit Analog Brightness Control
(1:1), 2:3, 1:2 320mA Charge Pump
6 Frames Memory for Animations
Supply Voltage Range: 2.7V to 5.5V
Minimum PCB space required
36-pin WL-CSP package
Datasheet......................
http://www.austriamicrosystems.com/eng/content/download/48348/529899/32335
