AS1109_1 AMSCO [austriamicrosystems AG], AS1109_1 Datasheet - Page 3

• Manufacturer Part Number: AS1109_1
• Description: Constant-Current, 8-Bit LED Driver with Diagnostics
• Manufacturer: AMSCO [austriamicrosystems AG]

AS1109
Data Sheet - P i n o u t
4 Pinout
Pin Assignments
Figure 2. Pin Assignments (Top View)
Pin Descriptions
Table 1. Pin Descriptions
www.austriamicrosystems.com
16-pin SSOP-150
16-pin SOIC-150
5:12
13
14
15
16
1
2
3
4
Pin Number
OUTN0
OUTN1
OUTN2
OUTN3
GND
CLK
SDI
LD
16-pin QFN
(4x4mm)
3:10
1
2
3
4
5
6
7
8
15
16
12
13
14
11
1
2
16-pin SSOP-150
16-pin SOIC-150
AS1109
Pin Name
OUTN0:7
REXT
GND
OEN
SDO
CLK
V
SDI
LD
DD
16
15 REXT
14 SDO
13 OEN
12 OUTN7
10 OUTN5
11 OUTN6
9 OUTN4
V
DD
Ground
Serial Data Input
Serial Data Clock. The rising edge of the CLK signal is used to clock
data into and at the falling edge out of the AS1109 shift register. In error
mode, the rising edge of the CLK signal is used to switch error modes.
Serial Data Load. Data is transferred to the data register at the rising
edge of this pin.
Output Current Drivers. These pins are used as LED drivers or for
input sense for diagnostic modes.
Output Enable. The active-low pin OEN signal can always enable
output drivers to sink current independent of the AS1109 mode.
0 = Output drivers are enabled.
1 = Output drivers are disabled.
Serial Data Output. In normal mode SDO is clocked out 8.5 clock cycles
after SDI is clocked in.
In global error detection mode this pin indicates the occurrence of a
global error.
0 = Global error mode returned an error.
1 = No errors.
External Resistor Connection. This pin connects through the external
resistor (R
Positive Supply Voltage
Revision 1.18
EXT
) to GND, to setup the load current.
OUTN0 3
OUTN1 4
CLK 1
LD 2
SDI
16
5
Description
16-pin QFN
GND
AS1109
15
(4x4mm)
6
V
14
7
DD
REXT
13
8
12
11
10
9
SDO
OEN
OUTN7
OUTN6
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