HAL1000(2004) 查看數據表（PDF） - Micronas

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HAL1000
(Rev.:2004)

Programmable Hall Switch

Micronas 

DATA SHEET

2.4. Example: Calibration of a Position Switch

The following description explains the calibration pro-

cedure using a position switch as an example.

– The mechanical switching points are given.

– temperature coefficient of the magnet: −500 ppm/K

Step 1: Input of the registers which need not be

adjusted individually

The register values for the following registers are given

for all sensors in the application:

– FILTER

Select the filter frequency: 500 Hz

– RANGE

Select the magnetic field range: 30 mT

– TC

For this magnetic material: 6

– TCSQ

For this magnetic material: 14

Enter these values in the software, and use the “write

and store” command to store these values perma-

nently in the registers.

Step 2: Calculation of the Sensor Parameters

Set the system to the calibration point where the sen-

sor output must be high, and press “Readout BOFF”.

Set the system to the calibration point where the sen-

sor output must be low, and press “Readout BON”

Now, adjust the hysteresis to 80%, and press the key

“calibrate and store”.

Step 3: Locking the Sensor

The last step is activating the LOCK function with the

“LOCK” command. The sensor is now locked and does

not respond to any programming or reading com-

mands. Please note that the LOCK function becomes

effective after power-down and power-up of the Hall-

IC.

Warning: The LOCKR register cannot be reset!

HAL 1000

Micronas

March 4, 2004; 6251-528-1DS

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