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AS1110
Datasheet
4 Pin Assignments
Figure 2. Pin Assignments (Top View)
28
27
26
25
24
23
22
CLK
1
21 SDO
LD
2
20 OEN
24 23 22 21 20 19 18 17 16 15 14 13
OUTN0
3
AS1110
19 OUTN15
OUTN1
OUTN2
OUTN3
4
5
6
28-pin QFN 5x5
18 OUTN14
17 OUTN13
16 OUTN12
AS1110
24-pin SSOP
OUTN4
7
15 OUTN11
1
2
3
4
5
6
7
8
9
10 11 12
8
9
10
11
12
13
14
4.1 Pin Descriptions
Table 1. Pin Descriptions
Pin Number
SSOP QFN
Pin Name
Description
1
2
24:27
28
GND
SDI
Ground
Serial Data Input
Serial Data Clock . The rising edge of the CLK signal is used to clock data into and out of the
3
1
CLK
AS1110 shift register. In error mode, the rising edge of the CLK signal is used to switch error
modes.
4
5:20
2
3:10
12:19
LD
OUTN0:15
Serial Data Load
Output Current Drivers . These pins are used as LED drivers or for input sense for
diagnostic modes. Data is transferred to the data register at the rising edge of these pins.
Output Enable . The active-low pin OEN signal can always enable output drivers to sink
21
20
OEN
current independent of the AS1110 mode.
0 = Output drivers are enabled.
1 = Output drivers are disabled.
Serial Data Output . In normal mode SDO is latched out 8.5 clock cycles after SDI is latched
in.
22
21
SDO
In global error detection mode this pin indicates the occurrence of a global error.
0 = Global error mode returned an error.
1 = No errors.
23
24
-
22
23
11
REXT
V DD
N/C
External Resistor Connection . This pin connects through the external resistor (R EXT ) to
GND, to setup the load current.
Positive Supply Voltage
Not connected
www.ams.com/LED-Driver-ICs/AS1110
Revision 1.6
2 - 24
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