AS3636 datasheet(32/42 Pages) AMSCO

32 / 42 page

www.austriamicrosystems.com

Revision 0.7

32 - 42

with additional features

with photosensor

AS3636

Preliminary Datasheet, Confidential - D e ta i l e d D e s c r i p t i o n

INDP

0R/W

100ms Indicator LED pulse

no pulse

if ILP=0: 100ms pulse on VLED output with

AF_LED_current and AF_LED_PWM duty cycle

if ILP=1: 100ms pulse on IND output with

IND_LED_current

PWM

0R/W

AF LED PWM enable if AF=1(pin VLED)

0no PWM

AF LED PWM with AF_LED_PWM

0R/W

AF LED on/off (pin VLED)

0off

enabled AF LED with AF_LED_current;

if PWM=1 use AF_LED_PWM duty cycle

7:4

0000b

always 0, don’t use

1. If IND=1 and INDP=1, IND=1 has priority

2. After the 100ms pulse, the register INDP is automatically reset

3. Do not operate AF=1 and (IND or INDP=1) at the same time

Table 22. LED Configuration Register

Addr: 12h

LED Configuration Register

Set maxim AF LED current and configure indicator type

Bit

Bit Name

Default Access

Description

2:0

Max_LED_current

NVM

AF LED Maximum current limit

000

10mA

001

15mA

010

20mA

011

28mA

100

37mA

101

50mA

110

65mA

111

80mA

6:3

always 0, don’t use

Table 21. LED Control Register (Continued)

Addr: 11h

LED Control Register

Control AF LED and indicator LED operating mode

Bit

Bit Name

Default Access

Description

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