 English |
|
|
|
|
|
|
|
| HAL-APB-V1.5 Datasheet, PDF (31/59 Pages) Micronas – Application Board HAL-APB V1.x | |||
| |||
| ◁ |
APPLICATION NOTE
HAL1820, HAL24xy, HAL28xy, HAL36xy, HAL38xy
Application Board HAL-APB V1.x
9. HAL24xy
The HAL 24xy is a universal magnetic field sensor with a linear output, based on the
Hall effect. Magnetic field, perpendicular to the branded side of the sensor provides a
output voltage direct proportional to the applied magnetic flux through the Hall plate
and proportional to the supply voltage (ratiometric behaviour). Details on features and
specification are described in the data sheet.
9.1. Programming interface
The sensor can be programmed via supply voltage modulation or via output voltage
modulation. The default mode is the programming via the output voltage modulation.
The sensor answers with a modulation of the output voltage.
A logical â0â is coded as no level change within the bit time. A logical â1â is coded as a
level change of typically 50% of the bit time. After each bit, a level change occurs (see
Fig. 9â1).
The serial telegram is used to transmit the EEPROM content, error codes and digital
values of the magnetic field from and to the sensor.
tbbit
tbbit
or
logical 0
logical 1
tbbit
or
tbhb tbhb
tbbit
tbhb tbhb
Fig. 9â1: Definition of logical 0 and 1 bit
Micronas
Oct. 8, 2012; APN000055_003EN
31
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese