AS5011
Data Sheet
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
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