AS3688 datasheet(30/72 Pages) AMSOSRAM

30 / 72 page

AS3688

austriami crosyst ems

Datasheet, Confidential

www.austriamicrosystems.com (ptr,tje)

Revision 1.1.1 / 20060707

28 - 70

Figure

18 – Flash Mode 3 – Flash time identical to strobe pulse time

Table

13 – High Current Sinks CURR30,31,32,33 Parameters

Symbol

Parameter

Min

Typ

Max

Unit

Note

IBIT7

Current sink if Bit7 = 1

76.8

IBIT6

Current sink if Bit6 = 1

38.4

IBIT5

Current sink if Bit5 = 1

19.2

IBIT4

Current sink if Bit4 = 1

9.6

IBIT3

Current sink if Bit3 = 1

4.8

IBIT2

Current sink if Bit2 = 1

2.4

IBIT1

Current sink if Bit1 = 1

1.2

IBIT0

Current sink if Bit0 = 1

0.6

For V(CURRx) > 0.2 / 0.4V

∆

absolute Accuracy

-15

+15

All Current sinks;

V(CURR3x) < VBAT-1.0V

VCURR3X

0.2

CPOUT

0-150mA range

VCURR3X_H

CURR30,31,32,33 Voltage

Compliance Range

0.4

CPOUT

150mA-300mA range

7.4.2.1 High Current Sinks CURR3x Registers

Curr3 control1

Addr: 12h

This register select the modes of the current sinks30..33 current.

Bit

Bit Name

Default

Access Description

preview_off_after

strobe

R/W

Select the switch off mode after strobe pulse

0=normal preview/strobe mode,

1=switch off preview after strobe duration has expired

To reinitiate the torch mode the preview_ctrl has to be set off

and on again

2:1

preview_ctrl

00b

R/W

Preview is triggered by

00b = off

01b = software trigger (setting this bit automatically triggers preview)

10b = GPIO2 active high

11b = GPIO2 active low

Preview Current Level

(defined by curr3x_preview)

TX Masking-function

reduce current during flash

(GPIO1 if txmask_on=1)

Preview on

(Software trigger or GPIO2)

Strobe on

(Software trigger or GPI3)

Strobe Current Level

(defined by curr3x_strobe

and curr3x_strobe_high)

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