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AS5030

Datasheet - Detailed Descr i p ti on

7 Detailed Description

The benefits of AS5030 are as follows:

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Complete system-on-chip, no calibration required

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Flexible system solution provides absolute serial and PWM output

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Ideal for applications in harsh environments due to magnetic sensing principle

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High reliability due to non-contact sensing

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Robust system, tolerant to horizontal misalignment, airgap variations, temperature variations and external magnetic fields

Figure 3. Typical Arrangement of AS5030 and Magnet

7.1 Connecting the AS5030

The following examples show various ways to connect the AS5030 to an external controller:

7.2 Serial 3-Wire R/W Connection

In this mode, the AS5030 is connected to the external controller via three signals:

Chip Select (CS), Clock (CLK) inputs and bi-directional DIO (Data In/Out) output.

The controller sends commands over the DIO pin at the beginning of each data transmission sequence, such as reading the angle or putting the

AS5030 in and out of the reduced power modes.

A pull-down resistor is not required.

C1 and C2 are hardware configuration inputs. C1 must always be connected to VSS, C2 selects 3-wire mode (C2 = low) or 2-wire mode (C2 =

high)