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AS3661 Datasheet(PDF) 49 Page - ams AG

No. de pieza AS3661
Descripción Electrónicos  Programmable 9-channel LED Dr iver
PDF  87 Pages
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Fabricante Electrónico  AMSCO [ams AG]
Página de inicio  http://www.ams.com
Logo AMSCO - ams AG

AS3661 Datasheet(HTML) 49 Page - ams AG

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www.austriamicrosystems.com
Revision 1.3
48 - 85
AS3661
Datasheet - D e t a i l e d D e s c r i p t i o n
8.10.7 LEDx CURRENT CONTROL
With the following register it is possible to control the output current of each current source separately. The resolution
of the current sources is 8-bit which gives a step size is 100 µA with a maximum output current of 25.5mA per current
source.
Table 32. LED1 CURRENT CONTROL Register
Register: 0x26
LED1 CURRENT CONTROL
Bit
Bit Name
Default
Access
Bit Description
7:0
LED1_CURRENT
1010 1111
R/W
This register controls the output current of current source
LED1 in 100µA steps from 0µA up to 25.5mA.
0000 0000: 0mA
0000 0001: 0.1mA
...
1010 1111: 17.5mA
...
1111 1110: 25.4mA
1111 1111: 25.5mA
Table 33. LED2 CURRENT CONTROL Register
Register: 0x27
LED2 CURRENT CONTROL
Bit
Bit Name
Default
Access
Bit Description
7:0
LED2_CURRENT
1010 1111
R/W
This register controls the output current of current source
LED2 in 100µA steps from 0µA up to 25.5mA.
0000 0000: 0mA
0000 0001: 0.1mA
...
1010 1111: 17.5mA
...
1111 1110: 25.4mA
1111 1111: 25.5mA
Table 34. LED3 CURRENT CONTROL Register
Register: 0x28
LED3 CURRENT CONTROL
Bit
Bit Name
Default
Access
Bit Description
7:0
LED3_CURRENT
1010 1111
R/W
This register controls the output current of current source
LED3 in 100µA steps from 0µA up to 25.5mA.
0000 0000: 0mA
0000 0001: 0.1mA
...
1010 1111: 17.5mA
...
1111 1110: 25.4mA
1111 1111: 25.5mA



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