www.ams.com/LED-Driver-ICs/AS1110

Revision 1.6

2 - 24

AS1110

Datasheet

4 Pin Assignments

Figure 2. Pin Assignments (Top View)

4.1 Pin Descriptions

Table 1. Pin Descriptions

Pin Number

Pin Name

Description

SSOP

QFN

124:27

GND

Ground

228

SDI

Serial Data Input

31

CLK

Serial Data Clock. The rising edge of the CLK signal is used to clock data into and out of the

AS1110 shift register. In error mode, the rising edge of the CLK signal is used to switch error

modes.

42

LD

Serial Data Load

5:20

3:10

12:19

OUTN0:15

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.

21

20

OEN

Output Enable. The active-low pin OEN signal can always enable output drivers to sink

current independent of the AS1110 mode.

0 = Output drivers are enabled.

1 = Output drivers are disabled.

22

21

SDO

Serial Data Output. In normal mode SDO is latched out 8.5 clock cycles after SDI is latched

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.

23

22

REXT

External Resistor Connection. This pin connects through the external resistor (REXT) to

GND, to setup the load current.

24

23

VDD

Positive Supply Voltage

-11

N/C

Not connected

1

AS1110

24-pin SSOP

24

2

3

4

5

23 22 21

17

8

7

6

20 19 18

9

13

12

11

10

16 15 14

SDO

10

21

OUTN13

17

8

CLK

1

OUTN0

3

OUTN4

7

AS1110

28-pin QFN 5x5

OUTN2

5

12

14

OUTN11

15

OUTN15

19

OEN

20

OUTN14

18

OUTN12

16

LD

2

OUTN1

4

OUTN3

6

13

11

9

26

28

24

22

23

25

27