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AS5030
AS5011
8 BIT PROGRAMMABLE HIGH SPEED
Low power Integrated Hall IC for
MAGNETIC ROTARY ENCODER
human interface applications
1 General Description
The AS5030 is a contactless magnetic rotary encoder for accurate angular measurement over a full turn of 360°.
It is a system-on-chip, combining integrated Hall elements, analog front end and digital signal processing in a
single device.
To measure the angle, only a simple two-pole magnet, rotating over the center of the chip is required.
The absolute angle measurement provides instant indication of the magnet's angular position with a resolution of
8 bit = 256 positions per revolution. This digital data is available as a serial bit stream and as a PWM signal.
In addition to the angle information, the strength of the magnetic field is also available as a 6-bit code.
Data transmission can be configured for 1-wire (PWM), 2-wires (CLK, DIO) or 3-wires (CLK, DIO, CS).
A software programmable (OTP) zero position simplifies assembly as the zero position of the magnet does not
need to be mechanically aligned.
A Power Down Mode together with fast startup- and measurement cycles allows for very low average power
consumption and makes the AS5030 also suitable for battery operated equipment.
The AS5030 Demoboard
The AS5030 demoboard measures the angle of a diametral magnet turning over the AS5030 sensor. It is
controlled by a built-in microcontroller and shows the result on the LCD display or on the PC GUI via the USB
interface.
The board is powered from the USB plug if it is connected to a PC, or from an external power supply on the DC
Jack (>7.5V) if the board works in stand alone mode without any PC. The angle and AGC values are displayed on
the LCD screen in both modes.
Dimensions of the demo board: 77mm x 84mm (3.03 x 3.30 inch).
Figure 1: AS5030 demoboard, TOP side
Revision 1.0, 29-May-08
DEMOBOARD OPERATION MANUAL
Figure 2: AS5030 demoboard, BOTTOM side
www.austriamicrosystems.com
DEMOBOARD AND SOFTWARE
OPERATION MANUAL
Page 1 of 8
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Summary of Contents for austriamicrosystems AS5030
- Page 1 1 General Description The AS5030 is a contactless magnetic rotary encoder for accurate angular measurement over a full turn of 360°. It is a system-on-chip, combining integrated Hall elements, analog front end and digital signal processing in a single device.
- Page 2 Demoboard Operation Manual 2 AS5030 Software Getting Started This software allows you to become familiar with the principle of the AS5030 sensor. In order to get started, you need: • The AS5030 Demo Software installer, downloadable on the Austriamicrosystems website •...
- Page 3 (see Figure 4). For a correct reading of the magnet angle, the airgap between the AS5030 top side and the magnet should be chosen that the 0<AGC<63. If the AGC value reaches 63, the ALARM LED will blink to indicate that the magnet is too far away from the sensor, and the measurement is not accurate or not valid.
- Page 4 Click on “Get absolute position”. The actual angle seen on the sensor side is displayed in decimal and binary (Z7..0 bits). Click on “Write zero position”. The bits Z7..0 are written to the Zero Position register of the AS5030. Now the actual mechanical angle is the 0° angle on the AS5030 side.
- Page 5 The SSI serial interface (DIO, CS, DCLK) is controlled by the microcontroller U5. The LED D7 is directly connected to the AS5030 on the MagRngn pin on one side, and on U5 for the other side to make it blinking if MagRngn = 5V (magnet too far away).
- Page 6 Demoboard Operation Manual 3.1.4 J4 connector for external AS5030 An external AS5030 device can be wired to this connector. It allows the user to test his own board, and/or fuse the configuration bits for the mass production. • Pin 1: ePROG.
- Page 7 AS5030 8 bit high speed magnetic rotary encoder Demoboard Operation Manual Table of contents General Description................................1 The AS5030 Demoboard................................ 1 AS5030 Software................................2 Getting Started................................2 Installing the Software .............................. 2 Software Usage ................................ 2 SSI-Readout ................................3 OTP ..................................4 AS5030 Demoboard hardware ............................
- Page 8 No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services.
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