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A1374KB

High Precision, Output Pin Programmable Linear Hall Effect Sensors

Allegro MicroSystems 

A1373 and

A1374

High Precision, Output Pin Programmable

Linear Hall Effect Sensors

Programming State Machine

POWER UP

INITIAL STATE

VPH

VPH

MODE SELECT

VPL

VPL

TRY VPL

1

BLOW VPL

2

LOCK

3

VPH

VPH

VPH

REGISTER SELECT

QVO

Coarse

VPL

0

QVO

Fine

VPL

SENS.

Coarse

VPL

1

2

SENS.

Fine

VPL

3

VPL

SENS.

TC

VPL

CLAMP VPL

POLAR

4

5

6

VPH

VPH

VPH

VPH

VPH

VPH

VPH

BITFIELD SELECT [Write Mode]

[Optional:

Measure]

[Optional:

Measure]

[Optional:

Measure]

0

VPL

1

VPL

2

VPL

VPL

2^N -1

VPH

VPH

VPH

VPH

No

BLOW

Yes

OR LOCK

MODE?

FUSE BLOWING

User generated transition

Internally generated transition

Allegro MicroSystems, Inc.

17

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

www.allegromicro.com

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