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AS1110-BSST

Constant-Current, 16-Channel LED Driver with Diagnostics

austriamicrosystems AG 

AS1110

Datasheet - Pinout

4 Pinout

Pin Assignments

Figure 2. Pin Assignments (Top View)

28 27 26 25 24 23 22

CLK 1

LD 2

OUTN0 3

OUTN1 4

OUTN2 5

OUTN3 6

OUTN4 7

AS1110

28-pin QFN 5x5

21 SDO

20 OEN

19 OUTN15

18 OUTN14

17 OUTN13

16 OUTN12

15 OUTN11

8 9 10 11 12 13 14

24 23 22 21 20 19 18 17 16 15 14 13

AS1110

24-pin SSOP

1 2 3 4 5 6 7 8 9 10 11 12

Pin Descriptions

Table 1. Pin Descriptions

Pin Number

SSOP

QFN

Pin Name

1

24:27

GND

2

28

SDI

3

1

CLK

4

2

LD

5:20

3:10

12:19

OUTN0:15

21

20

OEN

22

21

SDO

23

22

24

23

-

11

REXT

VDD

N/C

Description

Ground

Serial Data Input

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.

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 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.

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 (REXT) to GND, to setup the load current.

Positive Supply Voltage

Not connected

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Revision 1.04

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