19

A1373-DS, Rev. 3

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

115 Northeast Cutoff, Box 15036

www.allegromicro.com

Allegro MicroSystems, Inc.

High Precision, Output Pin Programmable, Linear Hall Effect Sensors

A1373 and A1374

Programming Logic

Binary Bitfield Address

Decimal Equivalent Code

Description

QVO Coarse register

00

0

01

1

10

2

11

3

Register wraps to 00

QVO Fine register

000000000

0

Initial value in selected QVO Coarse range

111111111

511

Maximum value in selected QVO Coarse range

Sens. Coarse register

00

0

Sens low range

01

1

Sens mid range

10

2

Sens high range

11

3

Register wraps to 00

Sens. Fine register

00000000

0

Initial value in selected Sens. Coarse range

11111111

255

Maximum value in selected Sens. Coarse range

TC Register register (See also chart Sensitivity Temperature Coefficient Code Profile in Typical Characteristics section)

00000

0

initial TC

00001 through 01011

1 through 11

Positive TC programming range

01100 through 01111

12 through 15

Unused: equal to codes 4 to 7, respectively

10000 through 11011

16 through 27

Negative TC prgramming range; Value for 16 equals 1 step

less than the value for the Initial TC Value (00000)

11100 through 11111

28 through 31

Unused: equal to codes 20 to 23, respectively

Clamp Bit register

00

0

Rail-to-rail output swing

01

1

10

2

00

3

Register wraps to 00

Polarity Bit register

0

0

field is applied to the device )

1

1

field is applied to the device )