HAL805 Datasheet, PDF(23/24 Page) Micronas – Programmable Linear Hall Effect Sensor

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HAL805 Datasheet, PDF (23/24 Pages) Micronas – Programmable Linear Hall Effect Sensor

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PRELIMINARY DATA SHEET

HAL 805

5.5. Register Information

CLAMP-LOW

â The register range is from 0 up to 1023.

â The register value is calculated by:

Low Clamping Voltage

CLAMP-LOW =

VDD

* 2048

CLAMP-HIGH

â The register range is from 0 up to 2047.

â The register value is calculated by:

High Clamping Voltage

CLAMP-HIGH =

VDD

* 2048

VOQ

â The register range is from â1024 up to 1023.

â The register value is calculated by:

VOQ =

VOQ

VDD

* 1024

SENSITIVITY

â The register range is from â8192 up to 8191.

â The register value is calculated by:

Sensitivity

SENSITIVITY = 2048

ADC-READOUT

â This register is read only.

â The register range is from â8192 up to 8191.

DEACTIVATE

â This register can only be written.

â The register has to be written with 2063 decimal

(80F hexadecimal) for the deactivation.

â The sensor can be reset with an Activate pulse on

the output pin or by switching off and on the supply

voltage.

5.6. Programming Information

If the content of any register (except the lock registers)

is to be changed, the desired value must first be writ-

ten into the corresponding RAM register. Before read-

ing out the RAM register again, the register value must

be permanently stored in the EEPROM.

Permanently storing a value in the EEPROM is done

by first sending an ERASE command followed by

sending a PROM command. The address within the

ERASE and PROM commands is not important.

ERASE and PROM act on all registers in parallel.

If all HAL 805 registers are to be changed, all writing

commands can be sent one after the other, followed by

sending one ERASE and PROM command at the end.

TC and TCSQ

â The TC register range is from â31 up to 31.

â The TCSQ register range is from 0 up to 31.

Please refer Section 4.2. on page 17 for the recom-

mended values.

MODE

â The register range is from 0 up to 63 and contains

the settings for FILTER and RANGE:

MODE = FILTER * 8 + RANGE

Please refer Section 2.2. on page 7 for the available

FILTER and RANGE values.

Micronas

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