AS5011

Data Sheet

www.austriamicrosystems.com

6

Operating the AS5011

6.1

Typical application

The AS5011 requires only a few external components in order to operate immediately when connected to the

host microcontroller.

Only 4 wires are needed for a simple application using a single power supply: two wires for power and two wires

for the I²C communication. A fifth connection can be added in order to send an interrupt to the host CPU when

the magnet is moving away from the center and to inform that a new valid coordinate can be read.

Figure 4: Electrical connection of AS5011 with microcontroller

6.2

XY coordinates interpretation

On Figure 5 the top view of the AS5011 is represented, with a round magnet (scaled) gliding over its surface. The

magnet can be placed under the sensor too, with the PCB between them.

•

Magnet on position 1:

The magnet is in its initial position, centered on the

sensor. The AS5011 is in Shutdown mode. X and Y

register values are (0,0)

•

Magnet on position 2:

The center of the magnet has been moved upon the

horizontal wakeup threshold Xp. An interrupt is sent

to the host microcontroller which sets the AS5011 to

Low Power mode. Wakeup thresholds are

programmable independently for the four directions.

•

Magnet on position 3:

The magnet is at the X and Y limit over the sensor

surface (2mm, 2mm) but still in range.

Figure 5: Position range of the magnet

Revision 3.10

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