AS1119-BWLT austriamicrosystems, AS1119-BWLT Datasheet - Page 26

• Manufacturer Part Number: AS1119-BWLT
• Description: IC LED 144CH DRIVER 36WLCSP
• Manufacturer: austriamicrosystems

Specifications of AS1119-BWLT

• Display Type: LED
• Configuration: Dot Matrix
• Interface: I²C
• Current - Supply: 4mA
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-UFBGA, 36-WLCSP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Digits Or Characters: -
• Other names: AS1119-BWLTTR

Table 21. Current Sourcer Register Format
Charge Pump Config Register (0x08)
In this register the characteristics of the Charge Pump can be set. If the supply of the AS1119 is strong enough the
charge pump is turning off automatically. This option and also the timeframe for it can be set. The timeframe defines
the period in which the control logic tries to switch off the charge pump. Per default this register is set to 0x1E.
Table 22. AS1119 Config Register Format
Open/Short Test Register (0x09)
The AS1119 can detect open and shorted LEDs. To start this test the according bits have to be set. The result of the
open/short test is written in the Open/Short staturs register
Table 23. Open/Short Test Register Format
The Open/Short test is only checking LEDs which are defined as ON in the Data Frame Registers
or
set to ‘1’, no LED will be turned ON.
AS1119
Datasheet - R e g i s t e r D e s c r i p t i o n
www.austriamicrosystems.com/LED-Driver-ICs/AS1119
Bit
7:0
Bit
7:5
4:2
Bit
7:2
Table 12 on page
1
0
1
0
Timeframe for reduce
Analog Current
Reduce supply
Error detection
Charge Pump
supply test
Full Matrix
Bit Name
Bit Name
Bit Name
Matrix C
option
-
-
Address 0x07
19. With the bit1 (Full Matrix) all 144 LEDs will be defined as available and will be tested. If bit1 is
Default
Default
Default
000000
0000000
000
111
1
0
0
0
0x08 Charge Pump Config Register
0x09 Open/Short Test Register
Access
Access
Access
Current Source Registers
R/W
R/W
R/W
R/W
R/W
R/W
n/a
n/a
00000000: 0mA
..........
11111111: 31mA
000: 0.3s
001: 0.5s
010: 0.8s
011: 1.0s
100: 1.3s
101: 1.6s
110: 1.8s
111: 2.1s
0: reduce supply option off
1: reduce supply option on
0: Charge Pump disable
1: Charge Pump enable
0: all LED’s are available in the matrixes
1: not all LED’s are available in the matrixes
0: start test
1: no test
Revision 1.03
(see Table
26). The default setting of this register is 0x00.
Bit Description
Bit Description
Bit Description
Table 8 on page 15
26 - 31